Leg : 31 Top/Bottom Interval(mm): 0/ 0 Describer: MacGregor, I.
Hole: 294 Top of Core Depth(m) : 105.50 Rock Type: IGNEOUS
Core: 6 Sample Midpoint(m) : 107.10 Sect/Pc #: CC/
ROCK = BASALT
THOLEIITIC,SECOND DESCRIPTION USED FOR ADDITIONAL
INFORMATION;
Texture: VARIOLITIC-INTERSERTAL*
Groundmass - PLAGIOCLASE ( 55%)
Size(mm): .2X.02 Morphology: LATH-LIKE-ACICULAR+HOLLOW
APPROX COMP AN52,FELTED NETWORK OF PLAG IN
GROUNDMASS OF FINE-GRAINED INTERSTITIAL MATERIAL
CONSISTING OF QUENCH XTLS+ALTERED BROWN GLASSY
MATERIAL+PINK TI-AUGITE NEEDLES+SKELETAL OXIDES*
PYROXENE ( 20%)
OPAQUE MINERALS
Morphology: SUBHEDRAL-EUHEDRAL+SKELETAL
SCATTERED INTERSTITIALLY;
OXIDES ( 10%)
OTHER ( 10%)
INTERSTITIAL MATERIAL*
Alteration - CALCITE ( 5%)
SERPENTINITE
Location: INTERSTITIAL
Leg : 31 Top/Bottom Interval(mm): 1160/1190 Describer: MacGregor, I.
Hole: 294 Top of Core Depth(m) : 112.00 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 113.18 Sect/Pc #: 1/PCE 7
ROCK = BASALT
OLIVE GREY THOLEIITE;
Texture: INTERSERTAL*
Groundmass - PLAGIOCLASE ( 40%)
Morphology: LATH-LIKE
APPROX COMP AN54,FELTED NETWORK OF PLAG+OCCASIONAL
ACICULAR PINK TI-AUGITE IN INTERSERTAL MATRIX OF
FINE QUENCH XTLS,QUENCH CONSISTS OF ACICULAR TI-
AUGITE ENCLOSED BY PLAG,QUENCHED AREAS LARGELY
ALTERED TO BROWN SERPENTINICIOUS MINERAL+CALCITE;
PYROXENE ( 5%)
OTHER ( 43%)
INTERSTITIAL AREAS-PLAG 57%,PYX 45%,OPAQUES 8%;
OXIDES ( 2%)
Morphology: EUHEDRAL
OXIDES ( 6%)
Morphology: SKELETAL
TWO GENERATIONS OF OPAQUES-ONE CONSISTS OF
EUHEDRAL XTLS SCATTERED THROUGH THE SECTION,SECOND
OF SKELETAL XTLS CHARACTERISTIC OF QUENCH AREAS*
Alteration - CALCITE ( 4%)
Leg : 31 Top/Bottom Interval(mm): 1190/1210 Describer: Meijer, A.
Hole: 294 Top of Core Depth(m) : 112.00 Rock Type: IGNEOUS
Core: 7 Sample Midpoint(m) : 113.20 Sect/Pc #: 1/
ROCK = BASALT;
Texture: FINE-GRAINED*
Groundmass - PLAGIOCLASE ( 55%)
Size(mm): 0.05
PLAG-RICH BASALT,INCIPIENTLY ALTERED TO CLAYS;
CLINOPYROXENE ( 10%)
Morphology: QUENCH
FRESH LOOKING,PURPLISH-BROWN;
FE-TI OXIDE ( 2-3%)
Morphology: ACICULAR
Alteration - COMBINATION ( 2-3%)
Replacing: INTERSTITIAL MATERIAL
INCLUDES CLAY+CALCITE*
Vesicles -
Filling: CALCITE
|
