leg site hole core section top interval depth(cm) top of core depth(cm) top of section(m) sample midpoint depth(m) describer rock name piece numbers texture data structure data alteration data other information data vesicle data phenocryst data groundmass mineral data replacement mineral data comments unknown code 43 384 22 1 112.0 324.80 325.92 326.30 HOUGHTON, R. PYX-PLAG MOD PHYRIC BASALT PCE 1 (112-114), 2 (112-127), 3 (129-140), 4 (141-150) PYX-PLAG MOD PHYRIC, HYPOXTLN,SLICKENSIDES COMMON IN INTERVAL (141-150), ESPECIALLY WELL-ENVELOPED ON EPIDOTE COMMON VEINING WITH CALCITE, AT (119-120) MAJOR CALCITE VEIN 11MMX32MM, FURTHER SPOTS OF CALCITE AROUND CORE ALONG STRIKE INDICATES VEIN MAY BE CONTINUOUS, 5-20% SLIGHTLY ELLIPTICAL AMYGDULES OF CALCITE AND/OR MONTMORILLONITE MOD INTERVAL (112-114) N4 MEDIUM DARK GRAY WITH MINOR N3 DARK GRAY WHERE DEGREE OF ALTERATION VARIES ALL COLORS ARE WET, INTERVAL (112-114) IS N4 (MEDIUM DARK GRAY) WITH MINOR N3 DARK GRAY,INTERVAL (114-128) IS N3 DARK GRAY BECOMING GRADUALLY DOMINANT DOWN CORE AND INCREASING THROUGH INTERVAL (128-141), AT INTERVAL (141-150) N3 (DARK GRAY) IS DOMINANT 5-10 ELLIPTICAL comments : VESICLES COMMONLY ALTERED ALONG LININGS TO IRON OXIDES FOLLOWED BY THIN CONFORMABLE LAYER OF A CLEAR TO WHITE MINERAL (CALCITE) AND MONT FOLLOWED BY CALCITE,LARGE VUG FILLED WITH CALCITE AT (131-132), VESICLES AT (112-114) WHOLLY OR PARTLY FILLED WITH 5G5/1 (MEDIUM GREENISH GRAY) EPIDOTE AND/OR N9 (WHITE) CALCITE, AT (138-141) A VUG (2.3X1.6CM) IS FILLED WITH EPIDOTE AND CALCITE PYX 8-15 0.4-1.4 comments : IN THIN-SECTION COLORLESS TO PALE PURPLISH BROWN,SUBHEDRAL &BROKEN & CORRODED PRISMATIC CRYSTALSOF AUGITE, PARTLY ALTERED TO AMPHIBOLE | PLAG <1 0.5-0.8 PYX 10-20 CALCITE | CHLORITE | AMPH PYX | EPIDOTE | MONT | ZEOLITE | FE.OX 43 384 22 2 0.0 324.80 326.30 327.80 HOUGHTON, R. PYX-PLAG MOD PHYRIC BASALTSIMILAR TO SECTION 22-1 PCE 1 (-24), 2 (24-30), 3 (31-41), 4 (41-48), 5 (47-55), 6 (55-61), 7 (60-64), 8 (64-74), 9 (74-88), 10 (88-94), 11 (95-100), 12 (101-118), 13 (118-121), 14A (127-132), 14B (127-130), 15 (133-143), 16 (143-150) MOD PHYRIC, UPPER SURFACE OF PCE 8 DISPLAYS SLICKENSIDES ON AN ALTERED SURFACE DOMINATED BY EPIDOTE AND IRON OXIDES,LARGE CALCITE VEIN INCLUSION CONTAINING REDDISH IRON OXIDE CONCENTRATION AND ANHEDRAL CRYSTALS OF MAGNETITE(?), PCES 10-12 + 14 SIMILAR TO PCE 9,PCE 16 IS SIMILAR TO PCE 15 CALCITE VEIN 0.5CM THICK IN PCE 3, CALCITE & IRON OXIDE & EPIDOTE IN VEIN AT CONTACT OF UPPER SURFACE OF PCE 7, ABUNDANT VEINS IN PCE 8, IN PCE 12 A THIN (<1MM) CALCITE VEIN CONNECTS VESICLES AND FORMER CRYSTAL POSITIONS,CALCITE VEINS IN PCES 15&16,AMYGDULES IN PCES 1-8 ARE MAINLY FILLED WITH 5GY2/1 (GREENISH BLACK) EPIDOTE, IN PCE 9 AMYGDULES ARE FILLED WITH PINK CALCITE AND LESS EPIDOTE, IN PCE 4 NATURE OF AMYGDULES CHANGES SLIGHTLY-EPIDOTES ARE BLUER AND IRON OXIDE STAINS (5YR3.5/4 MOD BROWN) BEGIN TO APPEAR AROUND AMYGDULE RIMS, THIS STAINING BECOMES MORE DOMINANT DOWNWARD MOD PCE 8,ABRUPT COLOR CHANGE AT PCE 9,10YR1/2 (DARK YELLOWISH BROWN) COLOR CHANGE FROM ABOVE INDICATES FOUR DIFFERENT EXTENTS OF WEATHERING FROM 74-143 CM, CONTACT BETWEEN IS MISSING | EXT PCS 15+16 FOR DETAILS SEE COMPOSITE THIN SECTION DESCRIPTION 10-15 comments : PCE 2, IN PCE 8 VESICLES LARGE AND EDGES IRREGULAR AS IF WEATHERED OUT | 1 comments : MINOR VESICLES IN PCE 8 | 1-6 comments : IN PCE 9, SMALLER THAN PCE 8, AVERAGE 3MM EPIDOTE | CALCITE | FE.OX 43 384 22 CC 93.0 324.80 328.73 329.30 HOUGHTON, R. PYX-PLAG MOD PHYRIC BASALTSIMILAR TO CORE 22 SECTION 1 PCE 1 (93-103), 2 (103-108), 3 (108-113),, 4 (113-118), 5 (118-125), 6 (125-131), 7 (131-144), 8 (144-150) TEXTURE AND MINERALOGY SIMILAR TO CORE 22 SECTION 1, BASE OF PCE 3 COATED WITH CALCITE+SPECULAR HEMATITE AND IRON OXIDE IN PCE 2 A CALCITE VEIN CONTAINING EPIDOTE CUTS DIAGONALLY ACROSS SPECIMEN, CALCITE VEIN AT BASE OF SPECIMEN, AMYGDULES OF EPIDOTE INCREASING RELATIVE TO CALCITE FILLINGS IN PCE 6, IN PCE 8 0.5CM AMYGDULES FILLED WITH EPIDOTE AND MINOR CALCITE CENTERS COMMON, PCE 1 IS COMPOSED OF ROCK FRAGMENTS,PCES 5+7 ARE MIXED GROUND BASALT FRAGMENTS comments: LESS ALTERED THAN BASALT FROM CORE 22 SECTION 1 AND SECTION 2 (PCES 1-8) PCE 2 IS 10YR3/2 DARK YELLOWISH BROWN ALTERED BASALT APPEARS TO BE CONTINUOUS WITH CORE 22 SECTION 2 (PCES 9-16), PCE 4 IS 5YR3/4 (MOD BROWN), PCE 8 IS N2.5 (DARK GRAYISH BLACK), PCE 5 MIXED GROUND BASALT FRAGMENTS-UPHOLE CONTAMINATION ABUNDANT,CONTAINS MIOCENE NANNOS <5 CALCITE,EPIDOTE, | CHLORITE comments : IN PCE 2, IN PCE 3 THERE IS A CALCITE FILLED VUG ON RIGHT SIDE LOOKING UP CORE CALCITE comments : IN VEINS & VESICLES AND COATING BASE OF PCE 3 | EPIDOTE comments : IN VEINS AND VESICLES | CHLORITE comments : IN VESICLES | HEMATITE comments : SPECULAR HEMATITE, COATING BASE OF PCE 3 | FE.OX comments : COATING BASE OF PCE 3