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 67 495 46 1 115.0 427.50 428.65 429.00 COWAN, D. S. OL-PLAG MICROPHYRIC BASALT PCES 1 (117-123), 2 (125-130), 3 (133-135), 4 (137-144), 5 (146-150) MICROPHYRIC, GROUNDMASS IS CRYSTALLINE AND MICROLITIC PCE 1 CONTAINS CAVITIES COMPLETELY FILLED WITH CRYSTALLINE WHITE CALCITE SLIGHTLY DARK GREY, THE ACTUAL CONTACT OF BASALT AND FORAMINIFERAL NANNOFOSSIL CHALK IS NOT PRESERVED, BUT LOWEST CHALK CONTAINS ABUNDANT WELL-PRESERVED FORAMS OL <7 <1 comments : OL ALTERED TO ORANGE-BROWN MATERIAL, LOCALLYUSTERED | PLAG <4 2 comments : PLAG PHENOS AVERAGE 2MM. LONG CALCITE 67 495 47 1 0.0 428.50 428.50 429.55 COWAN, D. S. OL-PLAG MODERATELY PHYRIC BASALT PCES 1A (0-15), 1B (25-20), 2A (22-27), 2B (27-31), 3 (33-39), 4A (44-50), 4B (50-58), 4C (57-63), 5 (72-75), 6A (82-85), 6B (85-95), 6C (95-105) GENERALLY PHYRIC, GROUNDMASS IS MICROLITIC AND CRYSTALLINE TO APHANITIC, PCE 3A TOP HAS 1 CM ALTERED GLASS RIM, PCE IN 5 IS ALSO PARTLY GLASS PCE 4A HAS WHITE CRYSTALLINE VEIN(<1MM) SURROUNDED BY TAN ALTERED GROUNDMASS SAME FOR SOME PCES IN 5 FRESH PCES 1A-3, PCE 3 HAS ALTERED GLASSY RIM ON TOP | MOD PCES 4A-6C MOD ALTERED, PCE 4A SURROUNDED BY TAN ALTERED GROUNDMASS AS WELL AS SOME PCES IN 5, OL PARTLY ALTERED TO ORANGE-BROWN CLAY(?), PCES 2A & 2B OX STAINS DARK GREY TO TAN BASALT, PCES 2A & 2B ARE CREAMY WHITE AND FIRM(BAKED CHALK?) WITH BLACK DENDRITIC OX STAINS & ANGULAR 2-5MM FRAGMENTS OF GREENISH YELLOW WAXY MATERIAL OL 5 <2 comments : PARTLY ALTERED TO ORANGE-BROWN CLAY(?) | PLAG 3 TO 4 comments : PRESENT AS LATHS CLAY OL comments : ORANGE-BROWN, ID CLAY UNCERTAIN | CLAY GLASS comments : ORANGE-BROWN 67 495 48 1 0.0 436.50 436.50 438.00 COWAN, D. S. OL-PLAG MODERATELY PHYRIC BASALT PCES 1 (0-5), 2 (10-21), 3 (25-30), 4 (32-35), 5A (38-46), 5B (49-51), 5C (51-60), 6 (65-67), 7 (70-75), 8 (79-87), 9 (90-97), 10 (100-106), 11 (107-123), 12 (124-130), 13 (133-138), 14 (141-150) PHYRIC, PCES 4 & 6 & 10 HAVE GLASSY BROWN-BLACK RIM (TO 1CM) PCES 12 & 8 ALTERATION RELATED TO 1-2MM WHITE CRYSTALLINE VEINS, ALTERNATING GLASSY AND FRESH PCES SUGGEST PILLOW LAVA MOD-FRESH 25-50CM & 60-89CM & 100-150CM, LOCALLY SMALLER PCES(6) ARE ALTERED THROUGHOUT AND REDDISH-BROWN IN COLOR, PCES 4 & 6 & 10 HAVE GLASSY BROWN-BLACK RIMS LOCALLY ALTERED TO ORANGE BROWN CLAY, PCES 12 & 8 ALTERATION AS IN 6 RELATED TO CRYSTALLINE VEINS DARK GREY 1-3 CLAY comments : PCE 11 GREEN WAXY CLAY OL 5 <2 comments : LOCALLY REPLACED BY ORANGE-BROWN ALTERATIONMATERIALS | PLAG 2 TO 3 CLAY 67 495 48 2 0.0 436.50 438.00 439.40 COWAN, D. S. OL-PLAG MOD PHYRIC BASALT PCES 1 (0-2), 2 (7-14), 3 (16-25), 4 (27-35), 5 (37-39), 6 (41-49), 7 (50-58), 8 (60-66), 9A (68-78), 9B(79-87), 10 (90-96), 11 (98-110), 12 (111-126), 13A (129-136), 13B (136-140) PHYRIC, MICROLITIC, PCES 5 & 6 & 8 HAVE GLASSY RIMS PCE 6 HAS 2CM PATCH OF DRUSY CALCITE COATING INDENTATION IN GLASSY RIM, PCE 7 CONTAINS 1-2MM WHITE VEINS WITH ADJACENT RED BROWN ALTERED ZONES MOD PCES 1-8 ALTERED TO PALE BROWN TO RED BROWN, OL ALTERS TO ORANGE BROWN CLAY APPROACHING GLASS RIM PCES 5 & 6 & 8, PCE 7 CONTAINS VEINS WITH ADJACENT RED BROWN ALTERED ZONES | FRESH PCES 9-13 OL <5 TO 2 | PLAG <2 TO 4 CALCITE comments : DRUSY CALCITE COATING INDENTATION IN GLASSY RIM OF PCE 6 67 495 48 3 0.0 436.50 439.50 440.60 COWAN, D. S. OL-PLAG MOD PHYRIC BASALT PCES 1A (0-15), 1B (15-26), 2A (31-40), 2B (41-46), 2C (46-65), 3 (67-74), 4A (81-100), 4B (101-109), PHYRIC, PCES 2-4 HAVE GLASSY RIMS, MICROLITIC GROUNDMASS PCE 2C HAS VEIN, PCE 1A HAS PATCHES FILLED WITH DRUSY CALCITE, PCES 1A & 2-4 PROBABLY ALL PILLOW BASALTS MOD TO FRESH 46-86CM MOD, OL PHENOS LOCALLY ALTERED TO RED BROWN CLAY, BASALT LOCALLY ALTERED TO REDDISH BROWN, ALTERED IN VICINITY OF VEIN IN 2C DARK GREY WHERE FRESH 3 CALCITE comments : PCE 1A DRUSY CALCITE OL <5 <2 | PLAG 2 2 comments : MICROPHENOS CALCITE 67 495 48 4 0.0 436.50 441.00 442.30 COWAN, D. S. OL-PLAG MOD PHYRIC BASALT PCES 1A (0-16), 1B (16-24), 1C (15-30), 1D (31-40) 1E (41-48), 1F (50-53), 1G (55-60), 1H (61-76), 1I (75-85), 2 (89-94), 3 (96-104), 4 (106-110), 5A (115-121), 5B (120-122), 6 (124-130) MOD PHYRIC, PCES 1A-1G HAVE GLASSY SELVAGES-PROBABLY CHILLED RIMS OF PILLOWS GLASSY SELVAGES IN PCES 1A-1G ARE PROBABLY CHILLED RIMS OF PILLOWS, SOME FRACTURES IN 1B & C COATED WITH GREENISH CLAY, 1B HAS 2CM CAVITY LINED WITH CALCITE CRYSTALS, 1C HAS A 1X2CM LARGE CAVITY FILLED WITH CREAMY CALCITE MOD PCES 1A-1G ARE ALTERED AND PARTLY REDDISH BROWN, OL ALTERED TO REDDISH BROWN AND GREEN CLAY | FRESH PCES 1H-5 EXTREMELY FRESH | MOD PCE 6 DARK GREY TO RED BROWN ALTERED BASALT OL 2 <1 | PLAG 2 TO 4 comments : MICROLITIC CALCITE comments : LINES CAVITY IN 1B IN FORM OF CALCITE CRYSTALS, FILLS CAVITY IN 1C WITH CREAMY CALCITE 67 495 49 1 0.0 446.00 446.00 446.20 COWAN, D. S. OL-PLAG MOD PHYRIC BASALT PCES 1 (0-4), 2 (10-19) MOD PHYRIC, MEDIUM TO FINE GRAINED, GROUNDMASS LOCALLY VARIOLITIC FRACTURES LOCALLY COATED WITH OLIVINE GREEN CLAY FRESH OL 5 TO 2 | PLAG 1 TO 2 comments : PLAG PRESENT AS LATHS