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 64 477 8 CC 5.0 58.00 58.08 58.13 SAUNDERS, A. PLAG PHYRIC BASALTDOLERITE PCE 1 (6-10) SOFT,COARSE-GRAINED EXTENSIVELY ALTERATION INDICATES ROCK MAY BE MORE DOLERITIC THAN BASALTIC DARK GRAY(N3-N4),SEA WATER-PERMEATED,VAGUE GREENISH TINT PLAG 20 0.5-3 CLAY.MIN comments : INDICATED BY GREENISH TINT 64 477 9 1 0.0 60.00 60.00 60.15 SAUNDERS, A. PLAG PHYRIC DOLERITE PCES 1 (2-4), 2 (6-8), 3 (11-14) MEDIUM-TO-COARSE-GRAINED,DOLERITIC,PHYRIC,SIMILAR TO CORE 8-CC EXTENSIVELY PERMEATED BY WATER,20% OF ROCK CONSISTS OF GREEN & VERY SOFT CLAY.MIN(OR ZEOL) LEADING TO LOSS OF INTEGRITYcomments: INDIVIDUAL MINERAL GRAINS VERY FRESH,PYX FAIRLY FRESH FRIABLE,DARK GRAY MATRIX,HOLE TEMPERATURE ESTIMATED AT 80 DEGREES CELSIUS PLAG TO 15 0.5-4 | PYX FELD | OL comments : ID OL UNCERTAIN,MATRIX IS DARK GRAY CLAY.MIN 20 comments : GREEN,VERY SOFT | ZEOL Saunders, A. 64 477 9 1 15.0 60.00 60.15 60.60 SAUNDERS, A. APHYRIC DOLERITE PCES 4 (16-18), 5 (22-28), 6 (29-33), 7 (35-40), 8 (43-47), 9 (48-52), 10 (55-59) MEDIUM-GRAINED APHYRIC EXTENSIVELY WATER-PERMEATED,SHOT THROUGH WITH VERY SOFT CLAY (OR ZEOL) RESULTING IN LOSS OF INTEGRITY, INDIVIDUAL MINERAL GRAINS VERY FRESH,PYX FAIRLY FRESH AND OL VERY FRESH INDICATE LOW GRADE ALTERATION DARK GRAY BASALT,FRIABLE,HOLE TEMPERATURE AT DEPTH ESTIMATED TO BE 80 DEGREES CELSIUS TO 1 4 ZEOL comments : ID VESICLES UNCERTAIN,IRREGULAR CAVITIES,ID ZEOL UNCERTAIN(NATROLITE?),PCES 9+10 FELD | PYX comments : FAIRLY FRESH | OL comments : VERY FRESH,ID OL UNCERTAIN CLAY.MIN comments : GREEN,VERY SOFT | ZEOL comments : ID ZEOL UNCERTAIN(POSSIBLY NATROLITE) 64 477 10 1 0.0 67.50 67.50 67.65 SAUNDERS, A. DOLERITE PCES 1 (0-3), 2 (4-7), 3 (9-13) MEDIUM-GRAINED,APHYRIC,SIMILAR TO CORE 9-1,PCE 3 MAY REPRESENT A CHILL ZONE EXTENSIVELY CONSTITUENT MINERALS(OL?,PYX,FELD) APPEAR FRESH DARK GREENISH-GRAY BASALT(5G2/1),WATER-PERMEATED, FRIABLE ZEOL comments : PCE 3 OL comments : ID OL UNCERTAIN | PYX | FELD ZEOL 64 477 10 1 15.0 67.50 67.65 68.40 SAUNDERS, A. FELDSPAR PHYRIC DOLERITE PCES 4 (16-22), 5 (23-27), 6 (30-34), 7 (37-42), 8 (43-53), 9 (55-59), 10 (61-67), 11 (69-72), 12 (74-76), 13 (78-80), 14 (82-85), 15 (86-90) PHYRIC,COARSE-GRAINED,GRAINSIZE RANGES 0.5-5MM EXTENSIVELY INDICATED BY FRIABLE NATURE & PRESENCE OF CLAY.MIN ALTHOUGH CONSTITUENT MINERALS NOT VISIBLY ALTERED DARK GREENISH-GRAY(5G2/1),FRIABLE ZEOL comments : CAVITIES,ID VESICLES UNCERTAIN FELD TO 10 FELD 5 | PYX | OL 0.5 comments : ID OL UNCERTAIN CLAY 10-20 | ZEOL 64 477 11 1 0.0 77.00 77.00 78.45 SAUNDERS, A. COARSE DOLERITE OR GABBRO PCES 1 (0-4), 2 (5-10), 3 (12-17), 4 (18-25), 5 (25-29), 6 (30-35), 7 (36-39), 8 (41-44), 9 (46-50), 10 (52-55), 11 (58-61), 12 (62-66), 13 (67-74), 14 (75-80), 15A (81-86), 15B (87-100), 15C (99-106), 16 (109-119), 17 (120-128), 18A (130-136), 18B (135-142) COARSE-GRAINED DOLERITE OR MEDIUM-GRAINED GABBRO,TOP OF CORE SIMILAR TO CORE 10-1,PCES 4-15C MEDIUM- GRAINED DOLERITE & PHYRIC,BECOMES COARSER-GRAINED AFTER PCE 9,PCES 10-18B COARSE GABBRO WITH GRAINSIZE GENERALLY 1-6MM EXTENSIVELY LIGHT GREEN CLAY.MIN(20-30%) IN MINERAL INTERSTICES, OL & PYX & PLAG ARE FRESH DARK GREENISH-GRAY,WATER-PERMEATED PLAG 15 3-6 comments : OCCASIONALLY IN PCES 10-18B,ALL PLAG FRESH | OL 1-6 | PYX 1-6 comments : PYX & OL FRESH CLAY 20-30 comments : INTERSTICES 64 477 11 2 0.0 77.00 78.50 80.00 FORNARI, D. GABBRO PCES 1A (0-10), 1B (10-17), 2 (19-27), 3A (29-40), 3B (40-48), 4 (50-57), 5A (60-75), 5B (76-85), 6 (87-93), 7 (95-100), 8 (101-113), 9 (115-121), 10 (122-128), 11 (130-134), 12A (136-138), 12B (138-150) COARSE-GRAINED EQUIGRANULAR EXTENSIVELY 20% OF ROCK CONSISTS OF CLAY.MIN,MAJOR PHENO MINERALS SEPARATED ALONG GRAIN BOUNDARIES, ALL PYX & FELD ARE VERY FRESH AND HAVE NOT BEEN ALTERED comments : VUGS FILLED WITH ZEOL & TURQUOISE-BLUE CLAY.MIN, ACICULAR PYX 2-5 comments : EUHEDRAL,FRESH | PLAG 2-5 comments : EUHEDRAL,FRESH | OL 1-2 comments : PALE YELLOW,MINOR PHENOS comments : MAJOR PHENO MINERALS SEPARATED ALONG GRAINBOUNDARIES CLAY.MIN comments : TURQUOISE-BLUE IN VUGS,20% OF ROCK CLAY.MIN | ZEOL 64 477 12 1 0.0 86.50 86.50 87.96 SAUNDERS, A. GABBRO PCES 1A (1-12), 1B (12-23), 1C (23-29), 2 (30-36), 3 (37-50), 4 (52-63), 5A (65-67), 5B (67-73), 6A (75-79), 6B (78-88), 6C (99-105), 7 (106-114), 8 (115-130), 9 (132-136), 10 (137-146) MEDIUM-GRAINED EQUIGRANULAR,SPARSELY PHYRIC WITH GRAINS BETWEEN 1 & 6MM COMPRISING FRESH XTLS OF PLAG & PYX & OL,VERY SIMILAR TO CORE 11-2 EXTENSIVELY 20% OF ROCK CLAY.MIN DARK GREEN-GRAY GABBRO,LESS FRIABLE THAN IN PREVIOUS CORES PLAG comments : OCCASIONAL PLAG 1-6 | PYX 1-6 | OL 1-6 CLAY.MIN 20 comments : INTERSTITIAL TO GRAINS IN GNDMASS,LIGHT GREEN 64 477 12 2 0.0 86.50 88.00 89.35 SAUNDERS, A. GABBROCOARSE DOLERITE PCES 1 (1-20), 2 (22-34), 3A (35-47), 3B (47-58), 3C (58-71), 3D (71-79), 4A (80-90), 4B (90-96), 4C (96-114), 4D (113-135) MEDIUM-GRAINED INEQUIGRANULAR TO PHYRIC GABBRO OR DOLERITE,PCES IN UPPER HALF OF THE CORE TEND TO HAVE COARSE TEXTURE(SIMILAR TO CORE 12-1) WHICH GRADE SLIGHTLY TO A MEDIUM-GRAINED DOLERITE TEXTURE IN THE LOWER HALF OF THE CORE(MAIN TRANSITION OCCURS IN CORES 12-3 & 12-4) PALE GREEN CLAY.MIN FACE THE JOINT SURFACES ON SEVERAL PCES EXTENSIVELY 20% PALE GREEN CLAY.MIN & ZEOL,MINERAL GRAINS NOT ALTERED DARK GREEN-GRAY BASALT PLAG 10 TO 6 comments : PROMINENT XTLS CLAY.MIN | GREEN & FACE JOINT SURFACES ON SEVERAL PCES,PALE | GREEN CLAY.MIN & ZEOL MAKE UP 20% OF ROCK | ZEOL 64 477 12 3 0.0 86.50 89.50 91.00 FORNARI, D. GABBRO TRANSITIONAL TO PLAG PHYRIC DOLERITE PCES 1 (0-8), 2 (10-15), 3A (17-28), 3B (29-31), 3C (33-45), 3D (45-49), 3E (50-56), 3F (56-62), 3G (63-68), 3H (68-73), 3I (74-78), 3J (79-86), 3K (87-92), 3L (92-108), 3M (99-105), 3N (106-111), 3O (112-116), 3P (117-122), 3Q (123-128), 3R (129-138), 3S (139-149) MEDIUM-GRAINED SIMILAR TO CORES 12-1 & 12-2 WITH SUBTLE TRANSITION DISCERNABLE FROM CORE 12-2 THROUGH CORE 12-3,FINE-GRAINED AT THE BASE TO THE POINT WHERE IT GRADES INTO A DOLERITIC TEXTURE EXTENSIVELY ALTERATION RESTRICTED TO INTERGRANULAR SURFACES OF PHENOS PLAG | PYX comments : PLAG & PYX ARE OF EQUAL SIZE BUT PLAG IS 1.5X MOREABUNDANT THAN PYX | OL comments : ALL PHENOS FRESH CLAY comments : BLUISH-GREEN | ZEOL comments : FIBROUS,ACICULAR 64 477 12 4 0.0 86.50 91.00 92.50 SAUNDERS, A. PLAG PHYRIC DOLERITE PCES 1A (0-9), 1B (9-17), 1C (17-25), 1D (25-31), 1E (31-80), 1F (79-119), 1G (120-123), 1H (123-128), 1I (129-136), 1J (136-141), 1K (145-148) MEDIUM-TO-FINE-GRAINED DOLERITE,BASE OF CORE TENDS TO BASALTIC TEXTURE CLAY.MIN COATINGS ON SEVERAL PCES INDICATE SMALL SCALE VEINING EXTENSIVELY ALTHOUGH SEVERELY ALTERED THERE IS LESS CLAY.MIN PRESENT(NOW 10%) THAN IN CORE 12-3 DARK GRAY 0 PLAG 10 1-5 PLAG | CPX | OL comments : MINERAL GRAINS UNALTERED | CLAY.MIN 10 CLAY.MIN 64 477 12 5 0.0 86.50 92.50 93.05 SAUNDERS, A. PLAG PHYRIC DOLERITE OR BASALT PCES 1A (0-12), 1B (12-15), 1C (15-18), 1D (18-24), 1E (18-24), 1F (25-29), 1G (30-42), 1H (42-51) FINE-GRAINED(<0.5MM GRAINSIZE),PHYRIC VEINING IN PCES 1A-1D MOD NO DEVELOPMENT OF CLAY.MIN AS IN CORE 12-4 DARK GRAY 0 PLAG 10 TO 6 comments : LATHS,IRREGULAR TABLOID 64 477 13 1 0.0 96.00 96.00 97.40 FORNARI, D. PLAG PHYRIC DOLERITE PCES 1 (0-1), 2A (3-10), 2B (10-18), 2C (18-21), 2D (22-30), 2E (29-36), 3A (38-47), 3B (47-55), 3C (55-65), 3D (63-70), 3E (71-73), 4A (76-78), 4B (78-96), 4C (95-106), 4D (105-113), 4E (111-121), 4F (120-130), 4G (130-138) PHYRIC NO FRACTURES OR VEINS FRESH DIUM-LIGHT GRAY PLAG 1-4 PYX | OP.MIN | OL 64 477 13 2 0.0 96.00 97.50 99.00 FORNARI, D. PLAG PHYRIC DOLERITE PCES 1 (2-4), 2 (8-10), 3 (12-20), 4A (23-25), 4B (26-29), 5A (31-40), 5B (40-45), 6A (47-56), 6B (55-65), 6C (65-87), 6D (87-120), 6E (120-127), 7 (129-130), 8 (132-150) SIMILAR IN ALL RESPECTS TO CORE 13-1 NO FRACTURING OR VEINING FRESH DIUM-LIGHT GRAY PLAG PLAG comments : FINE PLAG LATHS | OL | OP.MIN | PYX 64 477 14 CC 0.0 101.50 101.60 101.59 FORNARI, D. PLAG PHYRIC DOLERITE PCE 1 (0-9) SIMILAR IN ALL RESPECTS TO CORES 13-1 & 13-2 THIS PCE WAS FOUND JAMMED IN THE CORE CATCHER & CONSEQUENTLY THE CONTACT BETWEEN THE DOLERITE SILL ABOVE & THE CLAYSTONE BELOW(RECOVERED IN CORE 15) WAS NOT RECOVERED BUT IS INFERRED TO BE LOCATED WITHIN THE DRILLED INTERVAL 101.5-105.5M SUBBOTTOM