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 64 478 26 1 0.0 222.00 222.00 223.50 SAUNDERS, A. APHYRIC BASALT PCES 1 (1-3), 2 (17-18), 3 (10-18), 3A (20-22), 4 (24-30), 5 (32-39), 6 (40-44), 7 (56-67), 8 (70-76), 9 (79-82), 10 (84-91), 11 (93-100), 12 (102-105), 13 (106-118), 14 (120-129), 15 (130-139), 16 (140-143), 17 (145-148) APHYRIC,COARSE-GRAINED(0.2-0.5MM) VEINS IN PCES 10+15 CALCITE-FILLED MOD SLIGHT WEATHERING AURAE IN PCES 7+9 RESULTING IN BROWN DISCOLORATION DARK GRAY(N4) BASALT,SLIGHT BROWNISH DISCOLORATION IN PCES 7+9 TO 1 CALCITE,UNIDENT SPHERICAL comments : PCES 6-10,FILLED WITH WHITE MINERAL(IN PART CALCITE) CALCITE | PYR comments : SEVERAL PCES HAVE PYR DUSTING 64 478 26 2 0.0 222.00 223.50 223.65 SAUNDERS, A. APHYRIC BASALT PCES 1 (1-7), 2 (10-15) APHYRIC,COARSE-GRAINED,SAME AS CORE 26-1 64 478 27 1 0.0 231.50 231.50 232.70 FORNARI, D. VESICULAR BASALT GRADING TO APHYRIC BASALT PCES 1 (0-1), 2A (3-11), 2B (10-16), 3 (18-37), 4A (41-50), 4B (50-57), 5 (60-65), 6 (67-69), 7 (72-83), 8 (86-94), 9 (96-99), 10 (101-108), 11 (110-120) PCES 2A-4B APHYRIC BASALT,PCES 5-11 APHANITIC BASALT SMALL VEINS(<1MM THICK) PERVASIVELY FILLED WITH CALCITE & PYR & POSSIBLY DOLO FRESH E 1 IS SILTSTONE WITH DOLO XTLS & PYR,ALL PCES ARE DIUM-LIGHT GRAY(N6) COLOR 2-5 CALCITE,PYR | 2-5 CLAY,DOLO comments : VESICULAR,MOST LINED WITH CALCITE & PYR & CLAY & DOLO,ID DOLO UNCERTAIN,PCES 2A-4B | <1 CALCITE comments : PCES 5-11,SMALL VESICLES,SOMETIMES FILLED CALCITE | PYR | DOLO | CLAY 64 478 29 CC 0.0 250.50 253.50 253.60 FORNARI, D. APHYRIC BASALT PCES NO PCE NUMBERS ASSIGNED APHYRIC,SIMILAR TO UPPER PART OF CORE 27-1 MEDIUM GRAY(N6) TO 10 CALCITE,PYR,CLAY comments : HIGHLY VESICULAR,LINED CALCITE | PYR | CLAY 64 478 40 2 0.0 336.00 337.50 338.77 SAUNDERS, A. SEDIMENT 64 478 40 2 27.0 336.00 337.77 338.87 SAUNDERS, A. SEDIMENTBAKED SILTY MUDSTONE OR CLAYSTONE PCE A (127-137) 64 478 40 2 37.0 336.00 337.87 339.00 SAUNDERS, A. APHYRIC BASALT FRAGMENTS PCES B (137-144), C (142-150) PCES OF APHYRIC & APHANITIC BASALT EMBEDDED IN MEDIUM-GRAY(N5-N6) SILTY MUDSTONE,PCE B IS A BAKED CONTACT WITH CHILLED BASALT & BAKED SELVAGE(NON- GLASSY) 64 478 40 3 0.0 336.00 339.00 339.14 SAUNDERS, A. APHYRIC BASALT PCES NO PCE NUMBER ASSIGNED 0-14CM FRAGMENTS(2-4CM) OF APHYRIC APHANITIC BASALT WITH LITHIFIED SILTY CLAYSTONE IN A CLAYEY MATRIX DARK GRAY comments : SPARSELY VESICULAR 64 478 40 3 14.0 336.00 339.14 340.30 SAUNDERS, A. APHYRIC BASALT OR DOLERITE PCES 1A (14-37), 1B (37-68), 2 (70-82), 3A (84-97), 3B (97-128) APHYRIC,COARSE-GRAINED(GENERALLY <1MM),DISTINCT MOTTLED APPEARANCE TO THE BASALT IN THE LOWER PART OF THE SECTION DUE TO LARGE IRREGULAR PYX XTLS WHICH CONTAIN PLAG XTLS-POIKILITIC TEXTURE PCE 1B HAS VEIN MOD FELDSPAR SHOW SOME GREEN STAINING | FRESH CONSTITUENT MINERALS MEDIUM GRAY(N5) WHEN DRY CLAY comments : SPARSELY VESICULAR,GREEN CLAY FILLING,VERY LITTLE (IF ANY) CALCITE SINCE NO STRONG REACTION TO HCL ON VESICLE FILLING PYX comments : LARGE IRREGULAR XTLS & WITH PLAG FORM POIKILITIC TEXTURE | PLAG | OL | FEL CLAY | CALCITE comments : ID CALCITE UNCERTAIN SINCE NO STRONG REACTION TO HCL IN VEIN OR VESICLE FILLING 64 478 40 4 0.0 336.00 340.50 340.90 SAUNDERS, A. APHYRIC BASALT OR DOLERITE PCES 1 (0-18), 2 (19-30), 3 (32-40) APHYRIC,COARSE-GRAINED BASALT OR DOLERITE,MOTTLING EFFECT SEEN IN CORE 40-3 CONTINUES IN THIS SECTION GREEN CLAY.MIN IN INTERSTICES MOD ESH CONSTITUENT MINERALS MEDIUM GRAY(N5) CLAY comments : WHITE CLAY.MIN FILLING,SPARSELY VESICULAR PYX | OL comments : PYX & OL FAIRLY FRESH | FEL comments : SHOWS GREEN-TINT ALTERATION CLAY.MIN comments : WHITE IN VESICLES,GREEN IN INTERSTICES 64 478 41 1 0.0 345.50 345.50 346.28 SAUNDERS, A. APHYRIC BASALT PCE 1 (0-8), 2A (10-31), 2B (31-78) APHYRIC,GRAIN-SIZE < 0.5MM) MOD INTENSE IN VICINITY OF CLAY & ZEOLITE-FILLED VEINS (25-35CM, 62-64CM) OL | CPX | FELDSPAR comments : GREEN-TINTED CLAY | ZEOLITE | CALCITE 0 64 478 41 1 80.0 345.50 346.30 347.00 SAUNDERS, A. DOLERITE PCE 3 (80-130), 4 (130-150) MEDIUM-GRAINED, APHYRIC, AT TOP OF PCE 3 A CONCENTRATION OF FELSIC MINERALS WHICH MAY BE DUE TO A PLAG ACCUMULATION OR PART OF A REACTION AUREOLE AROUND A VEIN NOT RECOVERED MOD ROCK HAS A "PATCHY"APPEARANCE DUE TO ALTERATION COLOR MEDIUM DARK-GRAY (N4-N5) OL 0.5-1.0 | PYX 0.5-1.0 | PLAG 0.5-1.0 64 478 41 2 0.0 345.50 347.00 348.40 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-10), 1B (10-30), 1C (22-40), 1D (40-62), 1E (60-84), 1F (82-93), 1G (90-103), 1H (102-110), 1I (110-129), 1J (127-139) MEDIUM-GRAINED APHYRIC AT 103CM A 1CM CAVITY LINED WITH DRUSY WHITE XTLS (QTZ?),1-2MM WIDE VEINS OF ZEOL(?) & CLAY & QTZ MOD PCES 1A-1D+1I-1J,VICINITY OF VEINS | EXTENSIVELY PCES 1E-1H WITH PATCHES OF QTZ(?) MEDIUM GRAY(N5) WHEN DRY CPX | PLAG | OL CLAY | QTZ | ZEOL comments : ID ZEOL UNCERTAIN 64 478 41 3 0.0 345.50 348.50 350.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-31), 1B (32-70), 1C (69-92), 1D (90-102), 1E (101-114), 1F (114-124), 1G (124-137), 1H (136-147) MEDIUM-GRAINED(1-1.5MM),APHYRIC NARROW 1-2MM VEINS OF WHITE ZEOL & SI WITH REACTION AUREOLES,102-108CM DEVELOPMENT OF ELONGATE(TO 1CM) PYX XTLS IN A FELSIC GNDMASS(PROBABLY AN ALTERATION AREA BUT APPEARS PEGMATITIC) MOD OCCASIONAL BLEBS OF WHITE SILICA(?) OR ZEOL(?) MEDIUM-GRAY(N4-N5) FELDSPAR | PYX comments : XTLS,POSSIBLY AN ALTERATION AREA BUT APPEARS PEGMATITIC ZEOL | SILICA comments : ID SILICA UNCERTAIN 64 478 41 4 0.0 345.50 350.00 351.50 FORNARI, D. APHYRIC BASALT OR DOLERITE PCES 1A (0-12), 1B (12-35), 1C (35-70), 1D (70-105), 1E (106-123), 1F (123-136), 1G (135-149) APHYRIC,MEDIUM-COARSE-GRAINED,APPEARS EQUIGRANULAR CALCITE & CLAY VEINS(TO 0.5CM THICK) MOD ALTERATION MORE SEVERE NEAR CALCITE & CLAY VEINS (ZONES UP TO 2CM WIDE) | EXT 32-42CM, 95-104CM, 127-137CM MEDIUM-GRAY(N5) CPX | OL | PLAG CALCITE | CLAY 64 478 41 5 0.0 345.50 351.50 352.80 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-12), 1B (11-45), 1C (45-73), 1D (71-88), 1E (88-96), 1F (97-114), 1G (114-130) APHYRIC,MEDIUM-GRAINED(1-2MM),OCCASIONAL SILICA(?) BLEBS MOD FAIRLY BADLY ALTERED MEDIUM-GRAY(N4-N5),CONTINUATION OF CORE 41-4 CPX | PLAG | OL SILICA comments : ID SILICA UNCERTAIN | ZEOL 64 478 41 6 0.0 345.50 353.00 354.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-8), 1B (17-23), 1C (24-34), 1D (35-47), 1E (47-63), 1F (62-75), 1G (75-92), 1H (92-103), 1I (103-113), 1J (112-123), 1K (122-134), 1L (139-149) MEDIUM-GRAINED(0.5-1.5MM GRAINSIZE),APHYRIC SEGREGATION OF MAFICS FROM FELSICS LEADING TO BLOTCHY APPEARANCE,LESS VEINING THAN IN PREVIOUS SECTIONS MOD ABUNDANT SECONDARY ALTERATION WITH DEVELOPMENT OF IRREGULAR BLEBS OF ZEOL & SILICA MEDIUM-GRAY(N4-N5) PLAG | PYX | OL ZEOL | SILICA 64 478 41 7 0.0 345.50 354.50 355.72 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-12), 1B (13-23), 1C (21-38), 1D (38-52), 1E (48-71), 1F (71-85), 1G (85-95), 2 (96-106), 3 (108-122) MEDIUM-GRAINED(1-2MM GRAINSIZE),APHYRIC,DISTINCT SEGREGATION OF MINERAL GRAINS PRODUCES A BLOTCHY APPEARANCE MOD PCES 1A-2,BLEBS OF AMORPHOUS WHITE ZEOL & SILICA ESPECIALLY IN PCS 1E+1F MEDIUM-GRAY(N4-N5),CONTINUATION OF CORE 41-6,PCE 3 MARKS END OF CORE CPX | PLAG | OL ZEOL | SILICA 64 478 42 1 0.0 355.00 355.00 356.50 FORNARI, D. APHYRIC DOLERITE PCES 1A (1-3), 1B (3-16), 1C (16-23), 1D (22-32), 1E (31-40), 1F (41-55), 1G (56-70), 1H (70-85), 1J (84-105), 1L (105-116), 1M (116-127), 1N (126-138), 1O (137-147) MEDIUM-GRAINED(0.5-1MM GRAINSIZE),APHYRIC,SIMILAR IN ALL RESPECTS TO CORE 41-1 SILICA-CALCITE-ZEOL VEINS MOD TENSIVELY AROUND SEVERAL VEINS(24-28+64-70+92-95CM) MEDIUM GRAY(N5) SILICA comments : SOME FILLED VUGS CPX | PLAG | OP.MINS | OL CALCITE | ZEOL | SILICA 64 478 42 2 0.0 355.00 356.50 358.00 FORNARI, D. APHYRIC BASALTAPHYRIC DOLERITE (MAJOR ROCK TYPE) PCES 1A (1-15), 1B (15-21), 1C (22-35), 1D (35-51), 1E (52-81), 1F (80-104), 1G (103-117), 1H (117-147) MEDIUM-GRAINED,APHYRIC,PCE 1G APPEARS TO HAVE SHARDS OF FRESH GLASS & MAY REPRESENT A CHILL ZONE,SMALL MINERAL SEGREGATIONS SEPARATED BY BLEBS OF FINER- GRAINED MATERIAL VEINS FILLED WITH SILICA & ZEOL & SOME CALCITE MOD TENSIVELY ALTERATION ZONE PCE 1G,ZONES NEAR VEINS MEDIUM-GRAY(N5-N6) CPX | OL | PLAG | OP.MINS ZEOL | SILICA | CALCITE comments : VERY LITTLE 64 478 42 3 0.0 355.00 358.00 359.50 FORNARI, D. APHYRIC DOLERITE GRADING TO GABBRO PCES 1A (1-12), 1B (10-14), 1C (13-21), 1D (20-31), 1E (30-43), 1F (43-67), 2 (69-73), 3A (76-85), 3B (87-97), 4 (98-103), 5A (106-115), 5B (115-127), 5C (127-134), 5D (135-140), 5E (141-149) MEDIUM-GRAINED PCES 1-2,APHYRIC,COARSE-GRAINED PCES 3A-5A APPROACHING GABBROIC TEXTURE WITH LARGE CPX & PLAG XTLS(1-3MM LONG),CONTACT IN PCE 3B ZONE OF PLAG & CPX PHYRIC BASALT-DOLERITE ENDS IN BASE OF PCE 5B, SIMILAR TO PREVIOUS SECTIONS PCES 1-2 QTZ & ZEOL VEINS MOD TENSIVELY AROUND VEINS PCES 1-2 MEDIUM-GRAY(N5) CPX | PLAG comments : LARGE CPX & PLAG XTLS PCES 3A-5E QTZ | ZEOL comments : QTZ & ZEOL IN PCES 1-2 64 478 42 4 0.0 355.00 359.50 360.55 FORNARI, D. DOLERITE OR GABBRO PCES 1A (0-24), 1B (25-32), 1C (32-40), 2 (42-48), 3 (52-59), 4 (61-69), 5A (72-82), 5B (83-88), 5C (90-93), 5D (94-101), 5E (102-105) EQUIGRANULAR COARSE-GRAINED DOLERITE TO GABBRO VEINS SILICEOUS WITH LITTLE OR NO CALCITE MOD WEATHERED MEDIUM GRAY(N5),PCE 5E MARKS END OF CORE CPX | PLAG SILICA | CALCITE comments : LITTLE OR NO CALCITE 64 478 43 1 0.0 364.50 364.50 366.00 FORNARI, D. DOLERITE OR GABBRO PCES 1A (1-25), 1B (25-35), 1C (25-40), 1D (40-50), 1E (50-55), 1F (55-60), 1G (66-101), 1H (102-148) COARSE-GRAINED,DISCRETE APHYRIC ZONES OCCUR AT 70+116+138CM DISCRETE APHYRIC ZONES SOMETIMES ASSOCIATED WITH SILICEOUS VEINS,ROCK VERY UNFRACTURED MOD DIUM-GRAY(N5) CPX | PLAG | OL 64 478 43 2 0.0 364.50 366.00 367.50 FORNARI, D. DOLERITE PCES 1A (1-36), 1B (36-69), 1C (70-101), 1D (101-133), 1E (132-148) ZONES OF APHANITIC BASALT IN TOP OF PCE 1B & MOSTLY PCE 1E,CONTINUATION OF INCREASING GRAINSIZE SEEN IN LAST FEW CORES MOD SMALL PHENOS,ID OL UNCERTAIN,PRESENT IN APHANITIC ZONE CPX | PLAG | OL 64 478 43 3 0.0 364.50 367.50 368.92 FORNARI, D. DOLERITE PCES 1A (0-15), 1B (15-30), 1C (30-48), 1D (48-60), 1E (60-79), 1F (74-88), 1G (86-100), 1H (101-110), 1I (111-125), 1J (124-142) 1-2MM GRAINSIZE,2 APHANITIC ZONES IN PCES 1C & CONTINUES THROUGH PCES 1F-1G ROCK IS VERY UNFRACTURED,ONE SMALL VEIN CUTS ACROSS THE TOP OF PCE 1I MOD DMASS MEDIUM GRAY(N5),APHANITIC ZONES ARE LIGHT AY(N7) CPX | PLAG | OL 64 478 43 4 0.0 364.50 369.00 370.30 FORNARI, D. DOLERITE SILL PCES 1A (1-4), 1B (3-9), 1C (8-12), 1D (12-17), 1E (18-21), 1F (22-26), 2A (28-35), 2B (35-52), 2C (52-59), 2D (60-78), 2E (78-83), 2F (84-88), 2G (89-97), 2H (98-116), 2I (116-129) SAME AS CORE 43-3 EXCEPT FOR PCE 2D WHICH IS AN APHANITIC BASALT ZONE PRINCIPALLY FILLED WITH SILICA & CLAY, SILL MOD E 2I MARKS END OF CORE SILICA | CALCITE | CLAY 64 478 44 1 0.0 374.00 374.00 374.43 FORNARI, D. GABBRO PCE 1A (0-10), 1B (11-22), 1C (22-27), 1D (27-33), 1E (33-43) MOD X AG SIMILAR TO BASE OF CORE 42 (DOES DESCRIBER MEAN CORE 43? - ENCODER'S QUERY) 64 478 44 1 43.0 374.00 374.43 375.45 FORNARI, D. MICRODOLERITE TO DOLERITE PCE 1F (43-72), 1G (73-97), 1H (97-132), 1I (132-142), 1J (132-145), 1K (142-145) FROM PCE 1F BECOMES FINER GRAINED (DOLERITIC) TOWARD BASE, SMALL APHANITIC ZONE AT 116CM LITTLE VEINING BUT 2 CALCITE VEINS OCCURRING, PCE 1E HAS BEAUTIFUL PYRITE VEINS ON THE SIDE SLIGHTLY ROCK BECOMES SIGNIFICANTLY FRESHER IN THIS ZONE BECOMES LIGHTER IN COLOR (LIGHT TO RED-LIGHT GRAY (N6-N7) PYRITE | CALCITE 64 478 44 2 0.0 374.00 375.50 377.00 FORNARI, D. DOLERITE PCES 1 (1-22), 2 (25-33), 3A (36-88), 3B (88-123), 3C (124-149) EQUIGRANULAR UNFRACTURED & NO VEINING FRESH DIUM-LIGHT GRAY(N6),CONTINUATION OF CORE 44-1 64 478 44 3 0.0 374.00 377.00 378.40 FORNARI, D. DOLERITE PCES 1A (0-24), 1B (25-37), 1C (38-56), 1D (54-83), 1E (84-99), 1F (99-121), 1G (120-140) SAME AS IN CORE 44-2 64 478 44 4 0.0 374.00 378.50 379.90 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-14), 1B (15-37), 1C (37-64), 1D (63-90), 1E (89-120), 1F (120-140) APHYRIC DOLERITE,COARSE-GRAINED EQUIGRANULAR MAFICS TEND TO BE CONCENTRATED IN NARROW ZONES (2-3MM) SURROUNDING MORE FELSIC ZONES(TO 1MM ACROSS) GIVING A RATHER POLYGONAL APPEARANCE TO THE CUT SURFACES MOD REACTION RIMS AROUND RIMS NOTABLY MAFIC-FREE TINTED ALTERED FELD,OCCASIONAL BLEBS OF WHITE SI MEDIUM-GRAY(N5) TO LIGHT-BROWNISH-GRAY 5YR6/1 PLAG TO 2 comments : LATHS PYX | OL | FELDSPAR comments : TINTED SILICA comments : WHITE 64 478 44 5 0.0 374.00 380.00 381.30 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-21), 1B (20-39), 1C (38-68), 1D (68-92), 1E (92-113), 1F (112-130) APHYRIC DOLERITE,APPROX EQUIGRANULAR REACTION RIMS AROUND VEINS,MAFICS TEND TO BE CONCENTRATED IN NARROW ZONES AROUND MORE FELSIC AREAS APPROX 1.5CM DIAMETER MOD REACTION RIMS AROUND VEINS,OCCASIONAL BLEBS OF WHITE SILICA/ZEOL MEDIUM GRAY TO LIGHT-BROWNISH-GRAY(N5-5YR6/1) PLAG TO 2 comments : APPROX EQUIGRANULAR LATHS PYX | OL SILICA | ZEOL 64 478 44 6 0.0 374.00 381.50 382.60 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-30), 1B (30-60), 1C (60-91), 1D (93-110) APHYRIC DOLERITE,APPROX EQUIGRANULAR MAFICS CONCENTRATED IN NARROW ZONES AROUND MORE FELSIC AREAS APPROX 1.5CM DIAMETER MOD ALTERED FELDSPAR,OCCASIONAL BLEBS OF WHITE SI/ZEOL DIUM-GRAY TO LIGHT-BROWNISH-GRAY(N5 TO 5YR6/1) PLAG comments : LATHS PYX | OL comments : ID OL UNCERTAIN | FELDSPAR SILICA | ZEOL 64 478 45 1 0.0 383.00 383.00 384.50 SAUNDERS, A. APHYRIC DOLERITE PCE 1 (1-149) FORMS PART OF 186.5CM LENGTH OF DOLERITE RETURNED TO SCRIPPS UNBROKEN,SECTION NOT SLICED,DRILLED SURFACES SHOW IDENTICAL CHARACTERISTICS TO CORES 44-6 & 45-2 64 478 45 2 0.0 383.00 384.50 386.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1 (1-24), 2A (26-36), 2B (36-70), 2C (68-105), 2D (105-130), 2E (130-148) MEDIUM-GRAINED APHYRIC DOLERITE,MOTTLED OR BLOTCHY APPEARANCE DUE TO SEGREGATION OF MAFICS FROM FINER- GRAINED FELSIC PATCHES MOD PCES 2A+2D-2E MEDIUM-GRAY(N5) TO LIGHT BROWNISH-GRAY(5YR6/1),PCE 1 SENT TO SCRIPPS,UNSLICED AS PART OF 188.8 CM LENGTH CPX 15 comments : PARTIALLY ALTERED TO A GREEN COLOR | PLAG 70 | OL 5 SILICA | ZEOL 64 478 45 3 0.0 383.00 386.00 387.45 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-32), 1B (30-60), 1C (60-102), 1D (100-142) MEDIUM-GRAINED APHYRIC DOLERITE,MOTTLED OR BLOTCHY APPEARANCE DUE TO SEGREGATION OF MAFICS FROM FINER- GRAINED FELSIC PATCHES(SIMILAR TO CORES 45-1 & 45-2) FELDSPAR IN LOWER PART OF CORE ARE AMORPHOUS WHITE RATHER THAN TRANSLUCENT MOD FELD PROBABLY ALTERED & CPX APPEARS TO BE ALTERED MEDIUM GRAY(N5) TO LIGHT BROWNISH-GRAY(5YR6/1) CPX 15 TO 2 | PLAG 70 TO 2 | OL 5 <1 | FELDSPAR 64 478 45 4 0.0 383.00 387.50 388.95 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-4), 1B (3-15), 1C (16-40), 1D (40-80), 1E (80-111), 1F (111-130), 1G (130-144) MEDIUM-GRAINED APHYRIC DOLERITE,MOTTLED OR BLOTCHY APPEARANCE DUE TO SEGREGATION OF MAFICS FROM FINER- GRAINED FELSIC PATCHES(SIMILAR TO CORES 45-1 & 45-2) PCES 1A+1B SEVERE ZEOLITIZATION AROUND VEINS,VEIN PCE 1A MOD DIUM GRAY(N5) TO LIGHT BROWNISH-GRAY(5YR6/1) CPX 15 TO 2 | PLAG 70 TO 2 | OL 5 <1 ZEOL comments : AROUND VEIN IN PCES 1A+1B 64 478 45 5 0.0 383.00 389.00 390.46 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-20), 1B (20-23), 1C (23-30), 1D (31-71), 1E (72-96), 1F (96-111), 1G (111-146) MEDIUM-GRAINED APHYRIC DOLERITE,MOTTLED OR BLOTCHY APPEARANCE,POIKILITIC TEXTURE BLOTCHY APPEARANCE DUE TO SEGREGATION & IRREGULAR DISTRIBUTION OF MAFIC & FELSIC COMPONENTS MOD TENSIVELY 15-30CM INTERVAL MEDIUM GRAY(N5) TO LIGHT BROWNISH-GRAY(5YR6/1) CPX | FELDSPAR | CLAY | OL CLAY 64 478 45 6 0.0 383.00 390.50 391.40 SAUNDERS, A. APHYRIC DOLERITEAPHYRIC GABBRO PCES 1A (1-8), 1B (9-50), 1C (50-80), 1D (81-87) MEDIUM-GRAINED APHYRIC DOLERITE,POIKILITIC/BLOTCHY APPEARANCE & TEXTURE & COMPOSITION SIMILAR TO CORE 45-5,PCE 1D IS APHYRIC GABBRO MOD T 77-87CM MEDIUM GRAY(N5) TO LIGHT BROWNISH-GRAY(5YR6/1) 64 478 46 1 0.0 392.00 392.00 393.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-4), 1B (5-9), 1C (10-13), 1D (12-20), 1E (21-50), 1F (52-78), 1G (79-103), 1H (103-147) PCES 1A-1D COARSE-GRAINED APHYRIC GABBRO,PCS 1E-1H MEDIUM-GRAINED APHYRIC DOLERITE WITH POIKILITIC SEGREGATION OF MAFICS FROM FELSICS YIELDING A PATCHY APPEARANCE EXTENSIVELY PCES 1A-1D | MOD REMAINDER OF SECTION PCES 1A-1D DARK BROWNISH-GRAY(5YR6/1),PCES 1E-1H (N5 TO 5YR6/1) COMBINE comments : PYX-FELD INTERGROWTHS,PINKISH AGGS,APPEAR TO HAVEXTLLINE STRUCTURE PLAG | CPX | OL comments : PLAG & CPX & OL IN PCES 1A-1D | ZEOL SILICA comments : PCES 1E-1H,AMORPHOUS 64 478 46 2 0.0 392.00 393.50 395.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-25), 1B (25-53), 1C (53-73), 1D (73-99), 1E (98-125), 1F (124-150) MEDIUM-GRAINED APHYRIC DOLERITE,PATCHY APPEARANCE (POIKILITIC) SEGREGATION OF MAFICS CAUSES BLOTCHY APPEARANCE,ZEOL -FILLED CAVITIES(?) MOD DIUM GRAY TO MEDIUM BROWNISH-GRAY(5YR6/1) PYX | PLAG | OL 64 478 46 3 0.0 392.00 395.00 396.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-35), 1B (34-57), 1C (56-77), 1D (76-95), 1E (95-101), 1F (101-110), 1G (109-132), 1H (130-149) MEDIUM-GRAINED APHYRIC DOLERITE,COARSE-GRAINED ALMOST GABBROIC INTERVAL AT 93-101CM,BLOTCHY APPEARANCE SIMILAR TO PREVIOUS SECTIONS,POIKILITIC TEXTURE MAY BE DUE TO GROWTH OF 1-1.5CM INTERGROWN XTLS OF FELDSPAR & OPX(?) VEINING NOTICEABLY LESS THAN IN PREVIOUS CORES,ZEOL & SI-FILLED CAVITIES IN PCES 1A+1D-1E,NUMEROUS EMPTY CAVITIES IN GABBROIC SECTION PERHAPS DUE TO HYDROTHERMAL DISSOLUTION MOD APPEARS TO BE DECREASING | EXTENSIVELY INTERVAL 88-105CM MEDIUM GRAY(N5) TO MEDIUM LIGHT BROWNISH-GRAY (5YR6/1) PYX | FELDSPAR | OPX comments : ID OPX UNCERTAIN | PLAG | OL ZEOL | SILICA 64 478 46 4 0.0 392.00 396.50 397.85 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-25), 1B (25-42), 1C (42-75), 1D (75-94), 1E (95-110), 1F (111-116), 1G (115-132) MEDIUM-GRAINED(GRAINSIZE 1-1.5MM),APHYRIC DOLERITE MOD OCCASIONAL SMALL(1MM) AMORPHOUS WHITE BLEBS OF SI & ZEOL MEDIUM GRAY(N5) FELDSPAR comments : SLIGHTLY ALTERED | CPX | OL comments : FRESHER THAN FELDSPAR SILICA | ZEOL comments : SILICA & ZEOL IN AMORPHOUS BLEBS 64 478 46 5 0.0 392.00 398.00 399.15 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-20), 1B (20-45), 1C (45-60), 1D (60-85), 1E (85-112) MEDIUM-GRAINED APHYRIC DOLERITE,GRAINSIZE 1-1.5MM, LARGER POIKILOBLASTS OF PYX ENCLOSING FELD PRODUCE BLOTCHY APPEARANCE FINE WHITE VEINS OF SILICA & ZEOL MOD OCCASIONAL SMALL AMORPHOUS WHITE BLEBS OF SILICA & ZEOL | MOD FELDSPAR FELDSPAR | CPX | OL SILICA 64 478 48 1 0.0 410.00 410.00 411.40 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-6), 1B (7-18), 1C (17-28), 2A (30-32), 2B (32-36), 2C (38-40), 2D (41-45), 2E (45-48), 3A (50-67), 3B (67-80), 3C (85-115), 3D (115-137) MEDIUM-GRAINED,APHYRIC,GRAINSIZE 1-1.5,SIMILAR TO CORE 46 MOD DIUM-GRAY(N5) FELDSPAR comments : SLIGHTLY ALTERED | CPX | OL comments : CPX & OL FRESHER THAN FELDSPAR 64 478 49 1 0.0 412.00 412.00 413.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-25), 1B (25-50), 1C (51-65), 1D (65-80), 1E (81-104), 1F (101-110), 1G (110-125), 1H (125-138), 1I (139-150) MEDIUM-GRAINED,APHYRIC,BLOTCHY APPEARANCE DUE TO OPHITIC TEXTURES VEIN SEPARATING PCES 1D+1E HAS CAUSED CONSIDERABLE REXTLLLIZATION OF THESE PCES FOR A DISTANCE OF 2CM EITHER SIDE OF VEIN MOD ALTERATION APPEARS TO BE LESS THAN IN PREVIOUS CORES,MINOR AMORPHOUS BLEBS OF SILICA & ZEOL MEDIUM-GRAINED(N4/N5) CPX | PLAG comments : PALE-GREEN PYX XTLS OPHITICALLY ENCLOSE SMALL PLAG LATHS,LARGER PYX XTLS SURROUNDED BY DARK GREEN PYX & PLAG & ORE | OP.MINS SILICA | ZEOL 64 478 49 2 0.0 412.00 413.50 414.95 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-12), 1B (12-22), 1C (23-32), 1D (32-47), 1E (47-61), 1F (60-83), 1G (83-105), 1H (105-130), 1I (130-145) IDENTICAL TO CORE 49-1 PCES 1E-1F+1H SILICA &/OR ZEOL-FILLED VEINS WITH NO CALCITE MOD NTINUATION OF CORE 49-1 SILICA | ZEOL 64 478 49 3 0.0 412.00 415.00 416.45 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-5), 1B (5-41), 1C (40-75), 1D (74-94), 1E (93-130), 1F (130-142) IDENTICAL TO CORES 49-1 & 49-2 ZEOL &/OR SI-VEINS IN PCES 1C+1F(NO CARB DETECTED) MOD PERHAPS FRESHER THAN CORES 49-1 & 49-2 CONTINUATION OF CORE 49-2 SILICA | ZEOL 64 478 50 1 0.0 419.00 419.00 420.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-39), 1B (38-79), 1C (79-128), 1D (128-149) MEDIUM-GRAINED APHYRIC DOLERITE,INEQUIGRANULAR, POIKILITIC TEXTURE PCE 1A EXTENSIVELY VEINED & FILLED WITH SI &/OR ZEOL (NO CARB) comments: FRESHER THAN PREVIOUS CORES MEDIUM GRAY(N5) TO MEDIUM-DARK GRAY(N4) PYX 1-1.5 comments : PINKISH-GRAY & ROUNDED & ANHEDRAL DIFFUSE XTLS | FELDSPAR | PLAG comments : PYX(SUBOPHITICALLY ENCLOSING PLAG) IN A MATRIX OF FELDSPAR & DARK PYX & ORE & OL SILICA | ZEOL | CARB 0 64 478 50 2 0.0 419.00 420.50 422.00 SAUNDERS, A. DOLERITE PCES 1A (1-40), 1B (40-88), 1C (87-130), 1D (130-148) IDENTICAL TO CORE 50-1 VERY DIFFUSE WHITE VEIN IN PCE 1B(58-63CM) 64 478 50 3 0.0 419.00 422.00 423.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-7), 1B (7-27), 1C (27-40), 1D (40-55), 1E (55-73), 1F (73-95), 1G (94-130), 1H (130-145) INEQUIGRANULAR DOLERITE,APHYRIC,ESSENTIALLY IDENTICAL TO PREVIOUS 2 SECTIONS PCES 1B+1F-1G MINOR VEINING(NOT CALCITE) FRESH DIUM-GRAY TO MEDIUM DARK GRAY(N5-N4) PYX comments : LARGE BROWNISH-GRAY IRREGULAR PYX,DARK GREEN PYX | PLAG | OL comments : ID UNCERTAIN FOR OL | OP.MINS 64 478 50 4 0.0 419.00 423.50 425.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-10), 1B (11-56), 1C (55-87), 1D (87-119), 1E (118-148) SAME AS PREVIOUS SECTION,ACCENTUATION OF DARK MINERALS CAUSING A SPECKLED APPEARANCE ADJACENT TO THE VEINS 2 VEINS RUNNING ALMOST THE LENGTH OF THE SECTION ARE 3-5MM WIDE & CONTAIN APHANITIC PALE GRAY MINERALS (NOT CALCITE) MOD REACTION OF VEIN WITH COUNTRY ROCK CONSIDERABLE 64 478 50 5 0.0 419.00 425.00 426.50 SAUNDERS, A. DOLERITE PCES 1A (1-14), 1B (16-30), 1C (28-49), 1D (48-76), 1E (75-101), 1F (99-118), 1G (118-143) ESSENTIALLY IDENTICAL TO CORE 50-3 TWO MINOR VEINS IN PCES 1C+1G(NOT CALCITE-PROBABLY SILICA &/OR ZEOL) SILICA | ZEOL comments : ID SILICA & ZEOL UNCERTAIN 64 478 50 6 0.0 419.00 426.50 428.00 SAUNDERS, A. DOLERITE PCES 1A (0-16), 1B (15-31), 1C (31-49), 1D (48-76), 1E (76-110), 1F (110-137), 1G (136-147) ESSENTIALLY IDENTICAL TO CORE 50-3 MINOR VEINS IN PCES 1A+1C+1G(NOT CALCITE-PROBABLY SILICA &/OR ZEOL) SILICA | ZEOL comments : ID SILICA & ZEOL UNCERTAIN 64 478 51 1 0.0 428.00 428.00 429.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-3), 1B (3-8), 1C (8-10), 2A (11-53), 2B (53-78), 2C (79-90), 2D (90-111), 2E (110-128), 2F (128-146) APHYRIC,MEDIUM-GRAINED BUT STRONGLY INEQUIGRANULAR DOLERITE,POIKILITIC TEXTURE,PCES 1A-1C PCES OF PYX GABBRO MOD PCES 1A-1C+2F,WEATHERING VERY SLIGHT | FRESH PCES 2A-2E MEDIUM-GRAY(N5) PYX comments : LARGE,ROUNDED,ANHEDRAL,GRAY-BROWN XTLS | PLAG | CPX | OL | OP.MINS 64 478 51 2 0.0 428.00 429.50 431.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-20), 1B (19-40), 1C (39-49), 1D (49-59), 1E (58-79), 1F (78-96), 1G (95-111), 1H (111-130), 1I (130-149) APHYRIC MEDIUM-GRAINED POIKILITIC DOLERITE,SIMILAR TO CORE 51-1 ABUNDANT PLAG-CPX GABBRO XENOLITHS(TO 10CM ACROSS) MEDIUM GRAY(N5) 64 478 51 3 0.0 428.00 431.00 432.50 SAUNDERS, A. DOLERITE PCES 1A (0-12), 1B (13-33), 1C (33-46), 1D (47-53), 1E (53-62), 1F (62-72), 1G (73-91), 1H (92-110), 1I (110-125), 1J (125-131), 1K (130-147) 20% OF ROCK COARSE-GRAINED XENOLITHS OF PYX-FELDSPAR GABBRO,SIMILAR TO CORE 51-1,POIKILITIC DOLERITE CAVITIES IN XENOLITHS CONTAIN ACICULAR ZEOL IN ADDITION TO CRYPTOXTLLINE SILICA FRESH IN GENERAL,BOTH GABBRO & DOLERITE ZEOL | SILICA 64 478 51 4 0.0 428.00 432.50 434.00 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-19), 1B (18-35), 1C (35-48), 1D (45-58), 1E (58-74), 1F (75-93), 1G (94-102), 1H (101-120), 1I (121-127), 1J (125-137), 1K (136-147) MEDIUM-GRAINED,INEQUIGRANULAR,APHYRIC,POIKILITIC, SIMILAR TO CORE 51-1 5% 5-10CM WIDE XENOLITHS OF PYX-FELDSPAR GABBRO, XENOLITHS HAVE ZEOL-LINED OR FILLED CAVITIES MOD PCES 1I-1J | FRESH REMAINDER OF SECTION MEDIUM GRAY(N4-N5) PYX | FELDSPAR comments : PYX & FELDSPAR IN GABBRO XENOLITHS ZEOL 64 478 51 5 0.0 428.00 434.00 435.50 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-10), 1B (10-30), 1C (30-45), 1D (45-55), 1E (55-84), 1F (85-109), 1G (109-124), 1H (125-134), 1I (135-148) ESSENTIALLY SIMILAR TO CORE 51-4 FEWER GABBRO XENOLITHS THAN CORE 51-4,AMORPHOUS SI &/OR ZEOL-FILLED CAVITIES(TO 2MM ACROSS) IN PCE 1G (117-120CM) SILICA | ZEOL 64 478 51 6 0.0 428.00 435.50 436.85 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (0-11), 1B (10-28), 1C (28-43), 1D (43-62), 1E (62-79), 1F (79-89), 1G (89-111), 1H (111-120), 1I (121-135) MEDIUM-GRAINED,APHYRIC,INEQUIGRANULAR POIKILITIC, TEXTURE & MINERALOGY VERY SIMILAR TO THOSE IN PRECEDING CORES & SECTIONS,POIKILOBLASTIC XTLS OF PINKISH-GRAY PYX SUBOPHITICALLY ENCLOSING PLAG FRESH D 87-91CM INTERVAL DEVELOPMENT OF OCCASIONAL BLEBS OF AMORPHOUS SILICA &/OR ZEOL MEDIUM GRAY(N5) TO MEDIUM-DARK GRAY(N4) PYX comments : PINKISH-GRAY XTLS SUBOPHITICALLY ENCLOSING PLAG | PLAG | FELDSPAR | PYX comments : DARK-GREEN | OL | OP.MINS comments : FELDSPAR,DARK-GREEN PYX & OL SURROUND PINKISH-GRAY POIKILOBLASTS SILICA | ZEOL 64 478 52 1 0.0 437.00 437.00 438.40 SAUNDERS, A. APHYRIC DOLERITE PCES 1A (1-13), 1B (12-25), 1C (25-34), 1D (34-60), 1E (60-80), 1F (80-104), 1G (103-130), 1H (131-140) MEDIUM-GRAINED,APHYRIC,INEQUIGRANULAR-POIKILITIC, SIMILAR TO CORE 51-1 WITH NO GABBRO XENOLITHS EXTENSIVE AMORPHOUS SI & ZEOL VEINS IN SEVERAL PCES MOD MORE ALTERED THAN IN CORE 51-1 MEDIUM-DARK GRAY TO DARK GRAY(N4-N3) PYX comments : LARGE,PINKISH-GRAY XTLS OPHITICALLY ENCLOSE PLAG | PLAG | PYX comments : GREEN | OL | OP.MINS 64 478 52 2 0.0 437.00 438.50 440.00 FORNARI, D. APHYRIC DOLERITE PCES 1A (1-10), 1B (10-17), 1C (17-30), 1D (29-50), 1E (50-63), 1F (62-81), 1G (82-89), 1H (89-98), 1I (98-109), 1J (109-117), 1K (117-125), 1L (125-131), 1M (132-138), 1N (140-148) MEDIUM-GRAINED,APHYRIC,POIKILITIC(?),SIMILAR TO CORE 52-1 ONE LARGE QTZ & ZEOL VEIN CUTS THROUGH PCES 1F+1G+ 1H MOD DIUM-DARK GRAY(N4-N5) CPX comments : APPEARS TO BE POIKILITICALLY ENCLOSED AFTER MINERAL PHASES EXCEPT FOR MORE ABUNDANT OL,LARGE ANHEDRAL XTLS | OL QTZ | ZEOL 64 478 52 3 0.0 437.00 440.00 441.41 FORNARI, D. CPX POIKILITIC DOLERITE PCES 1A (1-6), 1B (7-15), 1C (15-27), 1D (27-40), 1E (40-56), 1F (57-70), 1G (70-80), 1H (80-94), 1I (94-107), 1J (107-117), 1K (117-128), 1L (128-141) HOMOGENOUS,POIKILITIC,SIMILAR TO CORES 52-1 & 52-2 LITTLE VEINING,SMALL SILIC VEIN IN PCE 1I, UNFRACTURED MOD DIUM-DARK GRAY CPX SILICA 64 478 52 4 0.0 437.00 441.50 442.91 FORNARI, D. DOLERITE PCES 1A (1-16), 1B (17-28), 1C (29-41), 1D (42-56), 1E (57-63), 1F (64-86), 1G (86-100), 1H (100-119), 1I (119-134), 1J (134-145) HOMOGENOUS,SIMILAR IN ALL RESPECTS TO CORES 52-1 TO 52-3,POIKILITIC MOTTLING LESS PRONOUNCED NO VEINING & LESS FRACTURED MOD FRESHER THAN PREVIOUS SECTIONS MEDIUM-DARK GRAY(N4-N5) 64 478 52 5 0.0 437.00 443.00 444.45 FORNARI, D. DOLERITE PCES 1A (1-10), 1B (11-17), 2 (19-27), 3A (30-38), 3B (37-56), 3C (56-65), 3D (60-70), 3E (70-80), 3F (80-90), 3G (90-96), 3H (96-101), 3I (102-105), 3J (105-120), 3K (121-145) MORE HOMOGENOUS & LESS MOTTLED & FINER-GRAINED THAN PREVIOUS CORES MOD PCES 1A-2 MORE ALTERED THAN REST OF SECTION(AT BASE OF PCE 1B ESPECIALLY) MEDIUM GRAY TO MEDIUM-LIGHT GRAY(N5-N6) CPX | PLAG | OL 64 478 52 6 0.0 437.00 444.50 445.91 FORNARI, D. DOLERITE PCES 1A (1-25), 1B (25-38), 1C (39-69), 1D (70-85), 1E (86-121), 1F (122-133), 1G (133-141) HOMOGENOUS,SIMILAR TO CORE 52-5,MOTTLING NOT AS PREVALENT AS IN SECTIONS 1 THRU 4,PCE 1E APPPEARS TO HAVE AN OL SEGREGATION IN IT UNFRACTURED & UNVEINED SLIGHTLY TO MOD DIUM GRAY(N5) OL comments : SEGREGATION IN PCE 1E 64 478 52 7 0.0 437.00 446.00 446.50 FORNARI, D. DOLERITE PCES 1A (0-23), 1B (24-50) SAME AS CORE 52-6,MOTTLING BECOMING PROGRESSIVELY LESS PROMINENT,HOMOGENOUS UNFRACTURED & UNVEINED SLIGHTLY DIUM-GRAY(N6),PCE 1B MARKS END OF CORE 52 64 478 53 1 0.0 446.00 446.00 447.40 FORNARI, D. APHYRIC DOLERITE PCES 1A (1-15), 1B (16-41), 1C (40-65), 1D (65-70), 1E (70-86), 1F (86-105), 1G (105-130), 1H (130-140) HOMOGENOUS,FINE-GRAINED,APHYRIC,VERY LITTLE MOTTLING UNFRACTURED,ONE SMALL SI & CLAY VEIN PRESENT IN PCE 1H SLIGHTLY D 130-140CM SILICA | CLAY 64 478 53 2 0.0 446.00 447.50 449.00 FORNARI, D. DOLERITE PCES 1 (1-7), 2A (10-18), 2B (19-37), 2C (39-50), 2D (51-70), 2E (70-79), 2F (80-85), 2G (84-93), 2H (93-102), 2I (103-111), 2J (112-125), 2K (126-136), 2L (137-150) SAME AS CORE 53-1 MORE SILICA/ZEOL VEINS THAN IN CORE 53-1,PCE 2F SPLI ALONG THE SURFACE OF A VEIN SLIGHTLY TO MOD PCES 1 & 2E-2G MODERATELY ALTERED MEDIUM-LIGHT GRAY(N6) SILICA | CLAY | ZEOL 64 478 53 3 0.0 446.00 449.00 450.45 FORNARI, D. DOLERITE PCES 1A (1-13), 1B (12-16), 1C (17-30), 1D (30-40), 1E (40-50), 1F (50-60), 1G (60-71), 1H (71-85), 1I (85-95), 1J (95-108), 1K (109-111), 1L (112-114), 1M (115-117), 1N (118-130), 1O (130-145) SAME AS CORE 53-2,FINE-GRAINED,HOMOGENOUS,PCES 1M-1O ARE SLIGHTLY FINER-GRAINED THAN PCES 1A-1L FEW VEINS,PCES 1D+1E NOT FRACTURED,MINOR VEINS CONTAIN CALCITE SLIGHTLY TO MOD PCES 1D & 1G MODERATELY ALTERED MEDIUM-LIGHT GRAY(N6) CALCITE 64 478 53 4 0.0 446.00 450.50 451.50 FORNARI, D. APHYRIC DOLERITE PCES 1A (1-13), 1B (13-31), 1C (32-46), 1D (46-53), 1E (53-61), 1F (62-75), 1G (75-98) APHYRIC,FINE-GRAINED,SIMILAR TO CORE 53-3 EXTENSIVE MICROFRACTURING IN PCE 1D WHICH SOMEWHAT CONTINUES INTO PCES 1C+1E SLIGHTLY TO MOD PCE 1D MODERATELY ALTERED MEDIUM GRAY TO MEDIUM-LIGHT GRAY(N5-N6) 64 478 54 1 0.0 455.00 455.00 456.50 SAUNDERS, A. APHYRIC BASALT OR DOLERITE PCES 1A (0-10), 1B (10-20), 2A (21-22), 2B (23-25), 2C (25-28), 2D (28-30), 3 (32-38), 4A (41-51), 4B (50-100), 5A (102-103), 5B (103-106), 5C (106-113), 5D (113-119), 6 (120-141) APHYRIC,COARSE-GRAINED WITH GRAINSIZE PROGRESSIVELY DECREASING THROUGH SECTION,SPECKLED APPEARANCE, PROPORTION OF FELDSPAR INCREASES DOWN THE SECTION FRACTURES LINED WITH GREEN CLAY MOD DIUM GRAY(N5),ROCK AT BOTTOM OF THIS SECTION D THROUGHOUT REST OF CORE IS DIFFERENT FROM AT IN CORE 53, THE LATTER HAS A FINE-GRAINED FRESH LERITIC APPEARANCE WHEREAS THIS SECTION HAS A PECKLED" APPEARANCE WITH ALTERED FELDSPAR LATHS ING IN A DK GREEN CPX-OL MATRIX FELDSPAR 50 comments : 1-4MM LONG & 0.5-1MM WIDE LATHS IN PCE 1A & 1.5MMIN LENGTH & <0.5MM WIDE IN PCE 6,PROPORTIONINCREASES DOWN THE SECTION,ALTERED CPX comments : DARK | OL comments : TOTAL % CPX & OL IS 50% CLAY comments : GREEN 64 478 54 2 0.0 455.00 456.50 457.30 SAUNDERS, A. APHYRIC BASALT PCE 1A (0-45), 1B (45-58), 2 (60-80) APHYRIC, VERY FINE-GRAINED, GRAINSIZE GENERALLY LESS THAN 0.5MM BOTTOM PART OF INTERVAL BECOMES FRAGMENTED, CHLORITE VEIN IN PIECE 1A MOD MEDIUM LIGHT GREY BASALT, CONTINUATION OF SECT. 1 CLAY.MIN comments : ABUNDANT | CHLORITE comments : ID UNCERTAIN FOR CHLORITE,FILLS VEIN 64 478 54 2 80.0 455.00 457.30 457.45 SAUNDERS, A. BASALT PCE 3A (80-83), 3B (83-87), 3C (86-90), 3D (91-93), 3E (91-94) APHANITIC SMALL FRAGMENTS COMPRISING APHANITIC GREENISH GRAY (5 G 6/1) BASALT MOD GREENISH GRAY COLOR (5 G 6/1), PCE 1A CONTAINS CONTACT BETWEEN APHANITIC BASALT (CONT. OF 0-80) AND MORE COARSELY XTLLINE BASALT (90-140) RARE SMECTITE comments : SMEC-LINED VESICLES OR CAVITIES 64 478 54 2 95.0 455.00 457.45 457.95 SAUNDERS, A. APHYRIC BASALT PCE 4A (95-105), 4B (105-111), 4C (112-125), 4D (122-144), 4E (140-145) FINE-GRAINED,APHYRIC MOD CONTACT: INTERVAL 80-95: UPPER UNIT (0-80) APPEARS TO BE CHILLED AGAINST LOWER UNIT (95-145) WITH POSSIBLE REGROWTH OF FELDSPARS IN LOWER UNIT (SEE T.S. DESCRIPTION) FELDSPAR 1-2 comments : VERY ELONGATE, RANDOMLY ORIENTED LATHS IN PCES 4A AND 4B, BUT IN PCES (4C,4D, & 4E) THEY ARE LESS WELL DEVELOPED CHLORITE MAFICS comments : ID UNCERTAIN FOR CHLORITE | PYRITE comments : AT 121CM, 143 CM 64 478 54 3 0.0 455.00 458.00 459.50 SAUNDERS, A. APHYRIC BASALT PCES 1A (0-34), 1B (30-41), 1C (39-53), 1D (50-65), 1E (65-93), 1F (90-141), 1G (139-150) MEDIUM-GRAINED APHYRIC BASALT,GRAINSIZE <2MM & GENERALLY 0.5-1MM,COARSER-GRAINED AREA OCCURS IN PCE 1G(PROBABLY ALTERATION PROCESS) OCCASIONAL VEINS CONTAIN CALCITE & SEVERAL FRACTURES ARE COATED WITH PYR MOD LIGHT COLORATION POSSIBLY DUE TO ALTERATION,COARSE -GRAINED AREA IN PCE 1G MAY BE DUE TO ALTERATION MEDIUM-LIGHT GRAY(N6) FELDSPAR comments : WHITE,OPAQUE | MAFICS comments : ALTERED CALCITE | PYR comments : IN FRACTURES & IN MATRIX | PYR | CALCITE 64 478 54 4 0.0 455.00 459.50 460.60 SAUNDERS, A. APHYRIC BASALT PCE 1A (0-45), 1B (43-75), 1C (75-93), 1D (93-100), 1E (98-104), 1F (104-110) APHYRIC, MEDIUM-GRAINED, BECOMES MORE MAFIC TOWARD BASE OF SECTION (N5/N6 AT TOP, N4 AT BOTTOM), TEXTURALLY AND MINERALOGICALLY VERY SIMILAR TO SECTION 1 MOD MEDIUM GRAY (N5), CONTINUATION OF SECTION 3 CALCITE | PYRITE