G106 0648B001R01020023005 0002 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, intersertal to intergranular                                                    Unit 2                                  Fine to cryptocrystalline                                                        Olivine             Plagioclase         Plagioclase                                                 <1   1    2              <1   1    2              0.4        </= 2      </= 2.4                                                                            An 75                                             An 79                                                                                                                                                 Subhedral                                         Acicular                                          Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               In glomerocrysts with ol.                                                                                                                                                                                                                                 Equant to prismatic. Discrete crystals. Often patchy zoning.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   2    40   3    1    50   2    40   3    1    0.04-0.6   0.04       0.04       n/a        n/a                                                                                                                                                                                                                                                                  Acicular,belt buckle                              Acicular                                          Acicular                                          n/a                                               n/a                                                                                                                                                                                                                                                                                                         Radiate ol-cpx-plag.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cryptocrstalline.                                                                                                                                                                                                                                          Vesicles                   < 1            < 0.1                                                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Similar to 106-648B-1R-1 (Piece 6, 30-33 cm). Possible segregation vesicles with diffuse boundaries (<1% of the section).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               N
G106 0648B001R01030033006 0002 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, intersertal to intergranular                                                    Unit 2                                  Fine to cryptocrystalline                                                        Olivine             Plagioclase         Plagioclase                                                 1    3    2              1    3    2              0.4        </= 2      </= 2                                                                                                                                An 77                                                                                                                                                 Subhedral                                         Acicular                                          Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               In glomerocrysts with ol.                                                                                                                                                                                                                                 Equant to prismatic. Discrete crystals, often zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   2    38   2    2    50   2    38   2    2    0.06-0.16  0.06-0.12  0.06-0.12  n/a        n/a                                                                                                                                                                                                                                                                  Acicular,belt buckle                              Acicular                                          Subhedral, acicular                               n/a                                               n/a                                               Also swallowtail morphology.                                                                                                                                                                                                                              Radiate ol-plag-cpx.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cryptocrystalline                                                                                                                                                                                                                                          Vesicles                   0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  One plag phenocryst is composed of elongated, interfingering of plag and grounmass. One plag phenocryst is sector zoned.  Some plag phenocrysts have partially resorbed cores with cryptocrystalline melt inclusions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   N
G106 0648B001R01059062011 0003 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic to intersertal                                                    Unit 3                                  Fine to cryptocrystalline                                                        Olivine             Plagioclase         Plagioclase                                                 1    1    3              1    1    3              </= 1      </= 2      </= 2                                                                              An 75                                             An 79                                                                                                                                                 Subhedral                                         Euhedral                                          Euhedral, rounded                                                                                                                                     In glomerocrysts with plag.                                                                                                                                                                                                                               Prismatic. In glomercrysts with olivine.                                                                                                                                                                                                                  Isolated crystals. Some strongly, normally zoned. Some oscillatory zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   2    38   3    2    50   2    38   3    2    0.06-2.00  0.01-0.06  0.03       n/a        n/a                                                                                                                                                              Ilmenite, Fe sulfide, titanomagnetite                                                               Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Fe sulfide occurs as blebs.                                                                                                                                                                                                                               Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   < 1            0.25                                                                                         None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  N
G106 0648B001R02037040006 0006 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic                                                                   Unit 6                                  Fine to cryptocrystalline                                                        Olivine             Olivine             Plagioclase         Plagioclase         Clinopyroxene       0.2  0.8  3    1    Tr   0.2  0.8  3    1    Tr   0.2-0.3    0.1-0.3    </= 4      1-3        0.35                                                                                                           An 79                                             An 75                                                                                               Anhedral                                          Subhedral                                         Laths,equant                                      Tabular                                           Anhedral                                          Isolated crystals.                                                                                                                                                                                                                                        In glomerocrysts.                                                                                                                                                                                                                                         Isolated crystals. Narrow normally-zoned rims. Some sector zoning.                                                                                                                                                                                        In glomerocrysts.                                                                                                                                                                                                                                         In glomerocrysts.                                                                                                                                                                                                                                          Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   1    38   4    2    50   1    38   4    2    < 0.1      < 0.1      < 0.1      0.01       n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Radiate ol-plag-cpx.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Melt inclusions in larger plag and ol phenocrysts are cryptocrystalline.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                N
G106 0648B001R02114117019 0010 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, intersertal to intergranular                                                    Unit 10                                 Fine to cryptocrystalline                                                        Olivine             Olivine             Plagioclase         Plagioclase                             0.8  0.2  2    2         0.8  0.2  2    2         </= 1      0.6        </= 1.5    </= 2                                                                                                                                                                       An 79                                                                                               Subhedral-euhedral                                Subhedral                                         Laths                                             Euhedral, rounded                                                                                   In glomerocrysts with plag.                                                                                                                                                                                                                               Isolated crystals.                                                                                                                                                                                                                                        In glomercrysts with ol.                                                                                                                                                                                                                                  Isolated crystals. Normally zoned rims.                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   1    40   2    2    50   1    40   2    2    < 0.1      < 0.1      < 0.1      < 0.1      n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Radiate plag-ol-cpx.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cryptocrystalline.                                                                                                                                                                                                                                         Vesicle                    < 1            < 0.3                                                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Finer grained than 106-648B-1R-2 (Piece 6, 37-40 cm). Round segregation vesicles (< 1% of the section), 1 mm in diameter, are completely filled. Cryptocrystalline melt inclusions in some large plag phenocrysts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      N
G106 0648B001R02117120019 0010 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic                                                                   Unit 10                                 Fine to cryptocrystalline                                                        Olivine             Olivine             Plagioclase         Plagioclase                             1.5  0.5  1    3         1.5  0.5  1    3         </= 1      </= 1      </= 1.5    </= 2                                                                                                                                                                       An 79                                                                                               Euhedral-subhedral                                Euhedral                                          Euhedral                                          Euhedral, rounded                                                                                   In glomerocrysts with plag.                                                                                                                                                                                                                               Isolated crystals.                                                                                                                                                                                                                                        In glomerocrysts with ol.                                                                                                                                                                                                                                 Isolated crystals. Some normally zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Plagioclase         Olivine             Opaques             Mesostasis          Clinopyroxene       50   2    3    7    32   50   2    3    7    32   < 0.1      < 0.1      < 0.1      n/a        < 0.1                                                                                                                                                                                                                                                                Acicular                                          Acicular                                          n/a                                               n/a                                               Acicular                                          Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Radiate ol-plag-cpx.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Cryptocrystalline.                                                                                                                                                                                                                                        Radiating.                                                                                                                                                                                                                                                 Vesicle                    < 0.1          < 0.1                                                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Similar to 106-648B-1R-2 (Piece 19, 114-117 cm), except more ol in glomerocrysts. Round segregation vesicles (< 1% of the section), 0.4-1.0 mm in diameter, are completely filled. Rare cryptocrystalline inclusions in plag and ol phenocrysts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        N
G106 0648B001R03026029006 0012 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic                                                                   Unit 12                                 Fine to cryptocrystalline                                                        Olivine             Olivine             Plagioclase         Plagioclase                             1    Tr   3    2         1    Tr   3    2         </= 0.5    </= 0.5    1.0        2-3                                                                                                                                                                                                                                                                             Subhedral                                         Subhedral                                         Euhedral-subhedral                                Euhedral                                                                                            In glomerocrysts with plag.                                                                                                                                                                                                                               Isolated crystals.                                                                                                                                                                                                                                        Equant to prismatic. In glomerocrysts with olivine. Some resorbed cores. Some oscillatory zoning.                                                                                                                                                         Equant. Isolated crystals with melt inclusions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          45   1    35   1    10   45   1    35   1    12   0.25       < 0.1      < 0.1      n/a        n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Plumose. Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   < 1            0.8-1.1                                                                                      Clay                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Clays                                                                                                                                                           2                                       Mesostasis                                                                                                                                                                                                                                                                                                                      Yellow-brown clays in groundmass. Concentrated in central zone of slide.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Round segregation vesicles (< 1% of the section), 0.3-1.2 mm, are partially to completely filled. One contains yellow clays.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            N
G106 0648B002R01014016003 0017 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic                                                                   Unit 17                                 Fine to cryptocrystalline                                                        Olivine             Plagioclase         Plagioclase                                                 1    2    1              1    2    1              0.5-1.0    0.5-1.5    1.6                                                                                                                                                                                                                                                                                        Subhedral                                         Euhedral, prismatic                               Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               In glomerocrysts with ol. Normal and patchy zoning. Some resorbed cores.                                                                                                                                                                                  Isolated crystals. Zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   Tr   43   1    2    50   Tr   43   1    2    0.05-0.30  0.1        < 0.05     n/a        n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Plumose. Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Plag phenocrysts contain cryptocrystalline melt inclusions.  Round segregation vesicles (< 1% of the section), 0.75 mm, are partially filled. Some possibly with reddish-brown clays.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   N
G106 0648B003R01003006001 0018 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariolitic                                                                   Unit 18                                 Fine to Cryptocrystalline                                                        Olivine             Plagioclase         Plagioclase                                                 1    2    2              1    2    2              0.5        0.5-1.0    1-3                                                                                                                                                                                                                                                                                        Subhedral                                         Euhedral                                          Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               Equant to prismatic. In glomerocrysts with ol. Some oscillatory and patchy zoning.                                                                                                                                                                        Isolated crystals. Zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques             Mesdostasis         50   Tr   42   1    2    50   Tr   42   1    2    0.25       < 0.1      < 0.05     n/a        n/a                                                                                                                                                                                                                                                                  Acicular                                          Anhedral                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Plumose. Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   < 1            0.15-0.75                                                                                    None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Clays                                                                                                                                                           Tr                                      Mesostasis                                                                                                                                                                                                                                                                                                                      Rare orange-brown clay in groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cryptocrystalline melt inclusions in plag and ol phenocrysts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           N
G106 0648B003R01031034005 0019 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, intergranular                                                                   Unit 19                                 Fine                                                                             Olivine             Plagioclase         Plagioclase                                                 3    5    1              3    5    1              0.6-0.8    1.0-1.8    1.5-4.0                                                                                                                                                                                                                                                                                    Subhedral                                         Euhedral                                          Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               Equant to prismatic. IIn glomerocrysts with ol. Normal and patchy zoning. Some resorbed cores.                                                                                                                                                            Isolated crystals. Zoned.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Plagioclase         Olivine             Clinopyroxene       Opaques             20   25   10   34   2    20   25   10   34   2    1.0        < 0.05     < 0.2      < 0.2      n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Anhedral aciclur                                  Subhedral, acicular                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Two size groups for ol and plag in groundmass. Ol crystals <0.2mm are anhedral. Ol crystals <0.05 mm are acicular.                                                                                                                                        Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             Vesicles                   < 1            < 0.1                            Even                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Clays                                                                                                                                                           Tr                                      Mesostasis                                                                                                                                                                                                                                                                                                                      Rare orange-brown clays in groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Groundmass continued:  Mesostasis; % present = < 1, % original = < 1, size range = ?, Morphology = ?, comments, cryptocrystalline.  MAIN COMMENTS: Groundmass is coarse compared to 106-648B-3R-1 (Piece 1, 3-6 cm). Cryptocrystalline melt inclusions in plag.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         N
G106 0648B003R01074077012 0019 DIV Moderately plagioclase olivine phyric basalt                                    Porphyritic, subvariolitic                                                                          Unit 19                                 Fine to cryptocrystalline                                                        Olivine             Plagioclase                                                                     1    2                   1    2                   0.2-0.7    0.3-3.0                                                                                                                                                                                                                                                                                               Euhedral-subhedral                                Euhedral                                                                                                                                                                                                                                                                                                                                                                                                                                                          One prismatic crystal, 6 mm long. Some patchy zoning. Some resorbed cores.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   1    40   3    3    50   1    40   3    3    0.02-0.15  0.01-0.05  0.01-0.05  n/a        n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Plumose. Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   < 1            0.1                                                                                          None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Clays                                                                                                                                                           Tr                                      Mesostasis                                                                                                                                                                                                                                                                                                                      Yellow-brown clays in groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               Some plag crystals have a cloudy appearance. Large plag phenocrysts have cryptocrystalline melt inclusions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             N
G106 0648B004R01040042008 0022 DIV Moderately plagioclase olivine phyric basalt                                    Glomeroporphyritic, subvariiolitic                                                                  Unit 22                                 Fine to cryptocrystalline                                                        Olivine             Olivine             Plagioclase         Plagioclase                             0.5  0.5  0.5  2.5       0.5  0.5  0.5  2.5       0.1-0.4    0.2-0.7    0.2-0.6    0.4-3.0                                                                                                                                                                                                                                                                         Subhedral                                         Euhedral                                          Subhedral                                         Euhedral                                                                                            In glomerocrysts with plag.                                                                                                                                                                                                                               Isolated crystals.                                                                                                                                                                                                                                        In glomerocrysts with ol.                                                                                                                                                                                                                                 Isolated crystals. Narrow rim normally zoned. Some patchy zoning. Some resorbed cores.                                                                                                                                                                                                                                                                                                                                                                                                                               Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   1    38   2    5    50   1    38   2    5    0.03-0.30  0.05       0.05       n/a        n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          Acicular                                          n/a                                               n/a                                               Belt buckle and swallowtail forms also present. Rarely up to 0.75 mm.                                                                                                                                                                                                                                                                                                                                                                                                                                               Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   < 1            0.15-0.30                                                                                    None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Clays                                                                                                                                                           Tr                                      Mesostasis                                                                                                                                                                                                                                                                                                                      Rare yellow-brown and reddish-brown clays in groundmass, concentrated on one side of slide in halo area.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Segregation vesicles (< 1% of the  section), 0.75 mm, 2/3 filled. Cryptocrystalline melt inclusions in plag phenocrysts.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                N
G106 0648B004R01053055010 0022 DIV Moderately plagioclase olivine phyric basalt                                    Intersertal to intergranular                                                                        Unit 22                                 Fine to cryptocrystalline                                                        Olivine             Plagioclase                                                                     1    3                   1    3                   0.25       1-3                                                                                                                                                                                                                                                                                                   Subhedral                                         Subhedral, prismatic                                                                                                                                                                                                                                                                                                                                                                                                                                              Narrow normally zoned rims. Patchy zoning around enclosed groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          45   2    32   2    15   45   2    32   2    15   0.1-0.3    0.10-0.15  0.15       < 0.1      n/a                                                                                                                                                                                                                                                                  Acicular                                          Acicular                                          n/a                                               n/a                                               n/a                                               Belt buckle and swallowtail forms also present.                                                                                                                                                                                                           Hollow crystal.                                                                                                                                                                                                                                           Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Vesicles                   < 1            0.3                                                                                          None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Possible miaroles ( or plucked part of slide), ~ 1%.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    N
G106 0648B006R01057060013 0026 DIV Moderately plagioclase olivine phyric basalt                                    Intergranular, holocrystalline, glomeroporphyritic                                                  Unit 26                                 Fine                                                                             Olivine             Plagioclase         Plagioclase                                                 1    2    3              1    2    3              1.5        1.5        1.5-3.0                                                                                                                                                                                                                                                                                    Subhedral                                         Euhedral                                          Euhedral                                                                                                                                              In glomerocrysts with plag.                                                                                                                                                                                                                               In glomerocrysts with ol.                                                                                                                                                                                                                                 Isolated crystals. Normal and patchy zoning. Some melt inclusions in cores. Narrow rim. Resorbed cores.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Plagioclase         Olivine             Clinopyroxene       Opaques                                 48   2    40   4         48   2    40   4         0.1-1.0    </= 1      0.1-0.5    0.1                                                                                                                                                                                                                                                                             Acicular, prismatic                               Acicular                                          Subhedral, prismatic                              n/a                                                                                                 Belt bukle forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Vesicles                   0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          N
G106 0648B006R01078081016 0026 DIV Sparsely plagioclase olivine phyric basalt                                      Holocrystalline, intergranular                                                                      Unit 26                                 Fine                                                                             Olivine             Plagioclase                                                                     < 1  1                   < 1  1                   0.3        1.5-3.0                                                                                       An 74-82                                                                                                                                                                                                Euhedral                                          Euhedral, prismatic                                                                                                                                                                                                                                                                                                                                                                                                                                               Normally zoned. Some patchy zoning. Cores enclose lenticular patches of groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques                                 54   1    40   3         54   1    40   3         0.1-1.5    0.1        0.1-0.3    n/a                                                                                                                                                                                                                                                                             Acicular                                          Acicular                                          Acicular                                          n/a                                                                                                 Belt buckle forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Vesicles                   4              1-2                              Even                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Segregation vesicles (< 1% of the section), 1mm, are filled.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            N
G106 0648B006R01078081001 0026 DIV Sparsely plagioclase olive phyric baslat                                        Holocrystalline, intergranular                                                                      Unit 26                                 Fine                                                                             Olivine             Plagioclase                                                                     < 1  1                   < 1  1                   0.3        1.5-3.0                                                                                       An 74-82                                                                                                                                                                                                Euhedral                                          Euhedral, prismatic                                                                                                                                                                                                                                                                                                                                                                                                                                               Normally zoned. Some patchy zoning. Cores enclose lenticular patches of groundmass.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      Plagioclase         Olivine             Clinopyroxene       Opaques                                 54   1    40   3         54   1    40   3         0.1-1.5    0.1        0.1-0.3    n/a                                                                                                                                                                                                                                                                             Acicular                                          Acicular                                          Acicular                                          n/a                                                                                                 Belt buckle forms also present.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Radiate.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Vesicles                   4              1-2                              Even                                                        None                                                                                                                    Round                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Segregation vesicles (< 1% of the section), 1 mm, are filled.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           N
G106 0648B006R01132135025 0027 DIV Moderately plagioclase olivine phyric basalt                                    Intergranular                                                                                       Unit 27                                 Fine                                                                             Olivine             Plagioclase                                                                     2    2.5                 2    2.5                 1.0-2.5    1-3                                                                                                                                                                                                                                                                                                   Euhedral                                          Subhedral-euhedral                                                                                                                                                                                      Similar to subophitic texture, ol enclosing plag. Seriate in size to groundmass.                                                                                                                                                                          Normal and patchy zoning. Resorbed cores. Seriate in size to groundmass. Narrow rim strongly zoned (normal).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             Plagioclase         Olivine             Clinopyroxene       Opaques             Mesostasis          50   3.5  36   4    2    50   3.5  36   4    2    0.3-2.0    0.3        0.3-1.5    n/a        n/a                                                                                                                                                                                                                                                                  Laths                                             Subhedral                                         Subhedral                                         n/a                                               n/a                                               Hollow structure.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   Slightly colored, pale brown.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Cryptocrystalline.                                                                                                                                                                                                                                         Vesicles                   0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          N