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 61 462 A 14 2 0.0 563.00 564.50 565.22 SHCHEKA, S. A. MICRODOLERITEBASALT SILL PCE 1 (0-14), 2 (16-20), 3A (25-40), 3B (40-60), 3C (60-69) FINE-GRAINED MICRODOLERITE, INTERVAL (2-7) MORE FINE-GRAINED BASALT SILL, CUT BY NUMEROUS VEINS OF CALCITE (THICKEST)+CHLORITE+CLAY-CHLORITE-CALCITE SLIGHTLY TO MOD PLAG 60 comments : MICROPHENOS AND MICROLITES | CPX 20 comments : MICROPHENOS AND INTERSTITIAL | MAGN 8-10 comments : SMALL IRREGULAR GRAINS | PYX comments : SLIGHTLY ALTERED TO LIGHT GREEN SMEC CALCITE | CHLORITE | CLAY.MIN | SMEC PYX 61 462 A 15 1 0.0 566.50 566.50 566.61 ROBINSON, P. T. SEDIMENT 61 462 A 15 1 11.0 566.50 566.61 567.99 ROBINSON, P. T. BASALT SILL PCE 1A (13-30), 1B (30-37), 2A (40-55), 2B (55-66), 2C (66-76), 2D (76-86), 2E (86-97), 2F (97-114), 2G (115-122), 2H (123-149) APHYRIC, AT 36CM ARE CHLORITE AND CLAY HALOS, BELOW 60CM THE BASALT IS APHANITIC BASALT SILL, MANY VEINS FROM 11-60CM OF CALCITE, CHLORITE, AND COMPLEX VEINS OF CALCITE, CHLORITE, ETC., BELOW 60CM THE VEINS ARE LESS ABUNDANT MOD CHLORITE | CALCITE 61 462 A 15 2 0.0 566.50 568.00 568.24 ROBINSON, P. T. BASALT SILL 61 462 A 15 2 0.0 566.50 568.00 568.24 ROBINSON, P. T. MICRODOLERITE PCE 1 (1-7), 2 (11-21) DIABASIC, SLIGHTLY MORE COARSE-GRAINED FROM 4-5CM VEINS OF CALCITE WITH PYRITE MOD CALCITE | PYRITE 61 462 A 16 1 0.0 572.00 572.00 573.42 SHCHEKA, S. A. MICRODOLERITEBASALT SILLMICRODOLERITES SAME AS ABOVE (15-2) PCE 1A (0-45), 1B (42-55), 1C (55-70), 1D (70-80), 1E (80-84), 1F (85-95), 1G (95-120), 1H (120-140) MICRODOLERITES BASALT SILL, QUARTZ-CHLORITE-CLAY-CALCITE AND QUARTZ-DIORITE LIKE VEINS APPEAR, QUARTZ-DIORITE LIKE VEINS CONSIST OF QUARTZ AND PLAG, PARTLY ALTERED TO CALCITE AND BRIGHT GREEN SMEC MOD ALTERATION IS OBSERVED NEAR VEINS CALCITE QUARTZ | PLAG SMEC comments : BRIGHT GREEN SMEC | PYX SMEC comments : GREEN SMEC 61 462 A 16 2 0.0 572.00 573.50 573.95 SHCHEKA, S. A. MICRODOLERITEMICRODOLERITES SAME AS ABOVE (16-1) PCE 1A (0-8), 1B (5-35), 1C (35-41) APHYRIC, MICRODOLERITE BASALT SILL 61 462 A 17 1 0.0 574.00 574.00 575.35 TOKUYAMA, H. MASSIVE SUBOPHITIC DOLERITEBASALT SILL PCE 1A (0-13), 1B (14-57), 1C (57-79), 1D (77-95), 1E (95-104), 1F (105-115), 1G (111-122), 1H (122-135) SUBOPHITIC, SPARSELY SPOTTED WITH CPX AGGREGATES AND PLAG PHENOS, MICROPHENOS ARE PLAG AND CPX MASSIVE, BASALT SILL, SOME VEINS ARE OF CALCITE+ CHLORITE+CLAY (SMECTITE OR PARAGONITE), SULFIDE (PYRITE) OCCURS IN SOME VEINS SLIGHTLY TO MOD CHLORITE VEINS ARE MEDIUM BLUISH GRAY (5B 5/1), CLAY VEINS ARE DARK GREEN AND LIGHT OLIVE BROWN (5Y 5/6) PLAG | CPX comments : MICROPHENOS PLAG | CPX | TI-MAGN comments : MICROLITES, IN ABUNDANCE PLAG>CPX>TI-MAGN | CPX comments : AGGREGATES | TI-MAGN CALCITE | CHLORITE | CLAY.MIN | PYRITE 61 462 A 17 2 0.0 574.00 575.50 576.57 TOKUYAMA, H. MASSIVE DOLERITEBASALT SILLAS MENTIONED IN SECTION 17-1 PCE 1 (0-22), 2A (25-35), 2B (35-44), 3A (45-61), SUBOPHITIC MASSIVE, BASALT SILL, IT IS NOT CLEAR WHETHER THE SILL LAYER OF THIS SECTION IS DIFFERENT FROM THAT OF LAST SECTION, VEINS PRESENT PLAG | CPX comments : MICROPHENOS CPX comments : AGGREGATES | TI-MAGN CALCITE | CHLORITE | CLAY.MIN | PYRITE | CLAY.MIN | SMEC PYX 61 462 A 18 1 0.0 576.00 576.00 576.05 TOKUYAMA, H. MASSIVE DOLERITEBASALT SILL PCE 1 (0-4) APHYRIC WITH MICROPHENOS OF CPX AND PLAG, SUBOPHITIC DOLERITE MASSIVE BASALT SILL, VEINED SLIGHTLY PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS 61 462 A 18 1 5.0 576.00 576.05 577.50 TOKUYAMA, H. MASSIVE DOLERITEBASALT SILL PCE 2A (5-22), 2B (23-31), 2C (32-46), 2D (46-54), 4 (54-70), 4 (74-80), 5A (84-96), 5B (96-114), 5C (114-150) SPARSE SPOTS (MORE FREQUENT THAN CORE 17) OF CPX AGGREGATES AND PHENOS (<2MM), THIS DOLERITE IS MADE OF PHENOS OF CPX AND MICROPHENOS OF CPX+PLAG | OF CPX AND MICROPHENOS OF CPX AND PLAG MASSIVE BASALT SILL, SOME VEINS OF CALCITE+CLAY+ CHLORITE, IN SOME VEINS SULFIDE (PYRITE?) OCCURS SLIGHTLY TO MOD ALTERATION SAME AS IN SECTION 17-1 COLOR IS SAME AS IN SECTION 17-1 PLAG comments : MICROPHENOS | CPX <2 CPX comments : MICROLITES | PLAG comments : MICROLITES | TI-MAGN comments : MICROLITES comments : CPX=PLAG>TI-MAGN IN ABUNDANCE PYRITE comments : ID UNCERTAIN, IN VEINS | CALCITE | CHLORITE | CLAY.MIN 61 462 A 18 2 0.0 576.00 577.50 578.40 TOKUYAMA, H. MASSIVE DOLERITEBASALT SILL, SAME AS SECTION 18-1 PCE 1 (0-9), 2A (10-32), 2B (32-70), 2C (70-88) APHANITIC, PHYRIC AS IN SECTION 18-2 MASSIVE BASALT SILL, VEINS PRESENT SLIGHTLY TO MOD PLAG comments : MICROPHENOS | CPX CPX comments : MICROLITES | PLAG comments : MICROLITES | TI-MAGN comments : MICROLITES comments : CPX=PLAG>TI-MAGN IN ABUNDANCE PYRITE comments : ID UNCERTAIN, IN VEINS | CALCITE | CHLORITE | CLAY.MIN 61 462 A 19 1 0.0 578.00 578.00 579.43 ROBINSON, P. T. BASALT SILL (MASSIVE) PCE 1 (1-72), 2 (72-141) MASSIVE BASALT (SILL), FROM 45 TO 65CM IS A VEIN WITH DARK GREEN EDGES AND A LIGHT GREEN (10G 8/2) INTERIOR (CELAD?,ZEOLITE?), FROM 75 TO 85CM THERE ARE CHLORITE+PALE GREEN MATERIAL+PYRITE VEINS, FROM 85 TO 92CM THERE ARE CHLORITE+PALE GREEN MINERAL VEINS, AND FROM 118 TO 150CM THE VEINS ALSO HAVE PYRITE BLOTCHES PYRITE | CHLORITE | CELAD comments : ID UNCERTAIN | ZEOLITE comments : ID UNCERTAIN 61 462 A 19 2 0.0 578.00 579.50 580.81 ROBINSON, P. T. BASALT SILL PCE 1 (0-50), 2 (43-128) INTERVAL (77-105) IS FINE-GRAINED MASSIVE BASALT (SILL), VEINS ARE OF CHLORITE+PALE GREEN MATERIAL+PYRITE, FROM 0 TO 50CM VEINS OCCUR (THROUGHOUT) APPROXIMATELY EVERY 2CM comments: ALTERED PYRITE | CHLORITE 61 462 A 20 1 0.0 581.00 581.00 582.49 ROBINSON, P. T. MASSIVE BASALT SILL PCE 1A (0-5), 1B (5-15), 2A (20-34), 2B (34-50), 2C (50-60), 2D (60-68), 2E (68-78), 2F (78-85), 2G (85-96), 3 (100-113), 4A (115-130), 4B (130-140), 4C (140-149) FINE-GRAINED, FROM 55CM AND DOWNWARD, THE ROCK APPEARS TO SUBTLY BECOME FINER IN GRAIN-SIZE AND MORE LEUCOCRATIC MASSIVE BASALT SILL, VEINS OF CHLORITE+PYRITE OCCUR WHICH ARE 0.5-2MM THICK MOD CHLORITE 61 462 A 20 2 0.0 581.00 582.50 583.92 ROBINSON, P. T. MASSIVE BASALT SILL PCE 1A (0-11), 1B (11-22), 1C (24-26), 2 (30-49), 3A (42-48), 3B (49-60), 3C (61-65), 3D (65-80), 3E (80-90), 3F (90-97), 3G (98-110), 3H (110-117), 3I (118-128), 4 (130-141) FINE-GRAINED MASSIVE BASALT SILL, FROM 100 TO 120CM ARE 1 TO 2MM THICK VEINS OF CHLORITE+PYRITE MOD CHLORITE | PYRITE 61 462 A 21 1 0.0 586.00 586.00 586.14 ROBINSON, P. T. SEDIMENT 61 462 A 21 1 14.0 586.00 586.14 586.96 ROBINSON, P. T. BASALT SILL PCE NO PCE NUMBERS ASSIGNED GRAIN SIZE INCREASES FROM 42 TO 93CM WHERE A GLASSY CHILL MARGIN EXISTS FROM 93 TO 96CM THREE BASALT SILLS, DARK VEINS PRESENT UNIT 1 OF 4 UNITS 61 462 A 21 1 96.0 586.00 586.96 587.23 ROBINSON, P. T. BASALT SILL PCE NO PCE NUMBERS ASSIGNED NO APPARENT TOP OR LOWER CHILL MARGINS INTACT-ACTUALLY TOP AND BOTTOM OF THIS UNIT ARE MISSING BASALT SILL, VEINED BASALT UNIT 2 OF 4 UNITS IN THIS SECTION 61 462 A 21 1 123.0 586.00 587.23 587.50 ROBINSON, P. T. BASALT SILLRED "BAKED" SEDIMENT (123-125) PCE NO PCE NUMBERS ASSIGNED THE UPPER BOUNDARY IS MARKED BY A GLASSY MARGIN WITH RED "BAKED" SEDIMENT (123-125) BASALT SILL UNIT 3 OF 4 UNITS IN THIS SECTION 61 462 A 21 2 0.0 586.00 587.50 587.76 ROBINSON, P. T. BASALT SILL FRAGMENTS AND RED BAKED SEDIMENT PCE NO PCE NUMBERS ASSIGNED THE FRAGMENTS IN THE TOP OF THIS SECTION INCLUDE: 1) TWO BASALT FRAGMENTS WHICH CONTAIN GLASSY MARGINS, 2) TWO BASALT FRAGMENTS WHICH LACK GLASSY MARGINS, AND 3) ONE SMALL FRAGMENT OF RED (10R4/6) BAKED SEDIMENT WITH A PORTION OF GLASSY MARGIN OF A SILL, NONE OF THESE FRAGMENTS ARE IN STRATIGRAPHIC ORDER AND THEREFORE IT IS IMPOSSIBLE TO DISTINGUISH IF THESE MISCELLANEOUS FRAGMENTS REPRESENT THE BOTTOM OF A CHILLED MARGIN OF UNIT 3 OR THE UPPER CHILLED MARGIN OF UNIT 4, IT IS LIKELY THAT BOTH ARE PRESENT 61 462 A 21 2 26.0 586.00 587.76 588.08 ROBINSON, P. T. BASALT SILL PCE NO PCE NUMBERS ASSIGNED AT (26-29) GRAIN SIZE INCREASES DOWNWARD BASALT SILL UNIT 4 61 462 A 22 1 0.0 588.00 588.00 588.92 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1 (0-5), 2 (5-14), 3 (16-19), 4A (21-27), 4B (27-38), 4C (38-45), 4D (45-56), 4E (56-74), 4F (75-82), 4G (80-92) APHYRIC, CHILLED MARGIN AND TRANSITIONAL ZONE OF SILL, GRAIN SIZE BECOMES COARSER TOWARD CENTER OF THE SECTION MASSIVE DOLERITE SILL WITH VEINS SLIGHTLY TO MOD 61 462 A 22 1 92.0 588.00 588.92 589.35 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 4H (92-111), TOP 14CM OF 4I (111-142) AT CHILLED MARGINS CPX>>PLAG WHILE AT THE TRANSITION ZONE (IN 0-90CM INTERVAL) CPX=PLAG, THE RATIO OF CPX PLAG MICROPHENOS MAY DECREASE TOWARD THE INTERIOR OF THE SILL, APHANITIC, APHYRIC TO MICROPHYRIC MASSIVE BASALT SILL MOD APHYRIC BASALT IS GREENISH GRAY (5G4/1) AND APHANITIC BASALT IS MED BLUISH GRAY (5B5/1), LOWER SILL BOUNDARY AT 135CM IS SHARP, THE 135CM INTERVAL IS THE BOUNDARY BETWEEN SILL INTERIOR AND SLIGHTLY APHYRIC BASALT FROM 135 TO 145CM PLAG comments : MICROPHENOS | CPX 61 462 A 22 1 135.0 588.00 589.35 589.50 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE BOTTOM 7CM OF 4I (111-142), 4J (142-150) APHYRIC MASSIVE BASALT SILL MOD APHYRIC BASALT IS GREENISH GRAY (5G4/1) 61 462 A 22 2 0.0 588.00 589.50 590.60 TOKUYAMA, H. SEDIMENT 61 462 A 22 2 110.0 588.00 590.60 591.00 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)EACH ZONE IS SAME AS MENTIONED IN 22-1 PCE 1 (110-125), 2A (126-143), 2B (130-150) DOLERITIC, INTERVAL (110-115) IS A CHILLED MARGIN, INTERVAL (115-130) IS A TRANSITIONAL ZONE FROM THE CHILLED MARGIN ABOVE TO THE APHANITIC ZONE AT (130-150) MASSIVE BASALT SILL WITH VEINS 61 462 A 22 3 0.0 588.00 591.00 592.45 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)MINERAL ASSEMBLAGES, ALTERATION, AND COLOR ARE THE SAME AS MENTIONED IN SECTION 22-1 PCE 1A (0-10), 1B (10-25), 1C (26-41), 1D (41-47), 1E (47-61), 1F (61-75), 1G (75-85), 1H (85-94), 1I (94-99), 1J (100-115), 1K (115-135), 1L (135-145) PCE 1A IS MEDIUM TO FINE-GRAINED, PCE 1F IS SLIGHTLY COARSE-GRAINED, PCE 1L IS MEDIUM TO FINE-GRAINED, AL 3 PCES ARE APHANITIC, GRAIN SIZE BECOMES GRADUALLY COARSER FROM THE TOP OF THE SECTION TO 70CM AND THEN DECREASES TOWARD THE BOTTOM OF THE SECTION MASSIVE BASALT SILL WITH VEINS MOD 61 462 A 22 4 0.0 588.00 592.50 593.91 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)MINERAL ASSEMBLAGES ARE THE SAME AS IN 22-1 PCE 1A (0-21), 1B (21-50), 1C (50-85), 1D (85-100), 1E (100-125), 1F (125-141) FROM 0 TO 90CM MEDIUM TO FINE GRAIN SIZE, FROM 90CM TO 124CM SLIGHTLY COARSE GRAIN SIZE, AND 125CM TO 150CM IS A TRANSITIONAL ZONE MASSIVE BASALT SILL WITH VEINS MOD 61 462 A 22 5 0.0 588.00 594.00 595.25 TOKUYAMA, H. MASSIVE BASALT (DOLERITE)MINERAL ASSEMBLAGES, ALTERATION AND COLOR AS MENTIONED IN SECTION 22-1 PCE 1A (0-20), 1B (21-50), 1C (50-65), 1D (66-80), 1E (80-95), 1F (96-122) INTERVAL (0-25) IS FINE-GRAINED, INTERVAL (25-124) I FINE TO MED-GRAINED MASSIVE BASALT SILL WITH VEINS MOD SAME AS IN SECTION 22-1 COLOR SAME AS IN SECTION 22-1 61 462 A 23 1 0.0 597.00 597.00 597.23 TOKUYAMA, H. SEDIMENT BAKED SEDIMENT VERY DARK RED (5R2/6) AT 22-23CM 61 462 A 23 1 23.0 597.00 597.23 597.60 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1A (23-60) APHANITIC, FROM 21-23CM (PCE 1A) BASALT IS SLIGHTLY PHYRIC, TRANSITIONAL, FROM 30-60CM (PCE 1A) BASALT IS FINE-GRAINED MASSIVE BASALT SILL WITH VEINS MOD CPX comments : MICROPHENOS | PLAG comments : MICROPHENOS, THE RATIO OF CPX:PLAG OF MICROPHENOSDECREASES TOWARD THE INTERIOR OF THE SILL 61 462 A 23 1 60.0 597.00 597.60 598.50 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1B ((57-86), 1C (86-94), 1D (94-102), 1E (102-121), 1F (121-130), 1G (130-142), 1H (142-150) FINE TO MEDIUM GRAIN SIZE (APHANITIC), GLASS MASSIVE BASALT SILL WITH VEINS MOD SAME AS IN SECTION 22-1 COLOR SAME AS IN SECTION 22-1 CPX comments : MICROPHENOS | PLAG comments : MICROPHENOS, THE RATIO OF CPX:PLAG DECREASESTOWARD THE INTERIOR OF THE SILL PLAG comments : MICROLITES | CPX comments : MICROLITES | MAGN comments : MICROLITES 61 462 A 23 2 0.0 597.00 598.50 599.24 TOKUYAMA, H. MASSIVE DOLERITE SILL (DOLERITE) PCE 1A (0-30), 1B (30-60), 1C (60-73) SPARSELY PHYRIC, VARIES TO APHYRIC ABOUT 55-74CM ZONE, 0-50CM IS FINE-MEDIUM GRAINED, INTERVAL 50-70CM IS FINER GRAINED (TRANSITIONAL ZONE), INTERVAL 70-74CM IS SPARSELY PHYRIC TO APHYRIC MASSIVE BASALT SILL WITH VEINS MOD SAME AS IN SECTION 22-1 COLOR SAME AS IN SECTION 22-1 CPX | PLAG 61 462 A 23 2 74.0 597.00 599.24 599.41 TOKUYAMA, H. SEDIMENT 61 462 A 23 2 91.0 597.00 599.41 599.95 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)MINERAL ASSEMBLAGE, COLOR, ALTERATION, AND COLOR ARE SAME AS IN 23-1 PCE 2A (91-100), 2B (100-108), 2C (109-118), 2D (118-150) SPARSELY PHYRIC TO APHYRIC, GRAIN SIZE BECOMES GRADUALLY COARSER TOWARD THE BOTTOM OF THIS SECTION MASSIVE BASALT SILL WITH VEINS MOD SAME AS IN SECTION 22-1 COLOR SAME AS IN SECTION 22-1 CPX | PLAG 61 462 A 23 3 0.0 597.00 600.00 601.50 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)COLOR AND MINERAL ASSEMBLAGE ARE THE SAME AS IN SECTION 23-1 PCE 1A (0-5), 1B (6-16), 1C (16-22), 2A (24-34), 2B (35-43), 3 (47-42), 4A (55-63), 4B (63-70), 5 (72-85), 6 (85-95), 7 (99-105), 8 (107-112), 9 (115-117), 10 (120-123), 11 (125-141), 12 (145-150) MICROPHYRIC, FINE TO MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL WITH VEINS MOD | EXTcomments: PCE 7 AT 98CM TO 104CM IS BADLY ALTERED TO CLAY COLOR SAME AS IN SECTION 23-1 PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, RATIO OF CPX:PLAG<=1 CLAY.MIN 61 462 A 23 4 0.0 597.00 601.50 602.50 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)COLOR, MINERAL ASSEMBLAGE, AND ALTERATION ARE THE SAME AS IN SECTION 23-1 PCE 1 (1-5), 2 (10-15), 3A (16-27), 3B (28-36), 3C (36-42), 3D (42-70), 3E (70-80), 4 (81-92) PCES 1-3C ARE FINE TO MEDIUM-GRAINED AND ARE MICROPHYRIC, IN PCES 1D TO 4 BASALT HAS A MEDIUM TO COARSE GRAIN SIZE AND INCLUDES CPX PHENOS MASSIVE BASALT SILL WITH VEINS MOD SAME AS IN SECTION 23-1 COLOR SAME AS IN SECTION 23-1 PLAG comments : MICROPHENOS | CPX comments : RATIO OF CPX:PLAG<1 61 462 A 24 1 0.0 606.00 606.00 607.50 SHCHEKA, S. A. MASSIVE BASALT SILL (DOLERITE)APHYRIC MICRODOLERITES 2D (35-50), 2E (50-98), 2F (92-110), 2G (110-125), 3 (125-141), 4 (145-150) APHYRIC, MICRODOLERITES ARE FINE TO MEDIUM GRAINED, INTERVALS (24-32) AND (80-107) ARE MORE FINE-GRAINED MASSIVE BASALT SILL WITH THIN VEINS (0.5-2MM) WHICH CONSIST OF CHLORITE AND PYRITE, BUT QUARTZ IN THE THICKER VEINS EXT PYX CHLORITE PYX | PYRITE | QTZ 61 462 A 24 2 0.0 606.00 607.50 608.91 SHCHEKA, S. A. MASSIVE BASALT SILL (DOLERITE)SAME AS SECTION 24-1 PCE 1 (0-20), 2 (20-30), 3A (32-60), 3B (61-70), 4A (71-75), 4B (72-80), 5A (82-106), 5B (106-122), 5C (122-127), 5D (125-140) MICRODOLERITES MASSIVE BASALT SILL WITH VEINS EXT BOTTOM OF PCE 1, TOP 15CM OF PCE 3A, AND PCES 3B-5A | FRESH REMAINDER IS FRESH SAME UNIT AS 24-1 61 462 A 24 3 0.0 606.00 609.00 610.50 SHCHEKA, S. A. MASSIVE BASALT SILL (DOLERITE) PCE 1A (0-6), 1B (6-10), 1C (10-30), 2A (33-45), 2B (45-50), 2C (50-60), 2D (60-73), 2E (74-85), 3 (86-99), 4 (101-107), 5A (110-122), 5B (122-131), 5C (131-150) FINE TO MEDIUM-GRAINED MICRODOLERITES, MICRODOLERITE IN INTERVALS (0-30) AND (110-150) ARE FINER GRAINED MASSIVE BASALT SILL WITH VEINS EXT SAME UNIT AS SECTION 24-2 61 462 A 24 4 0.0 606.00 610.50 611.17 SHCHEKA, S. A. MASSIVE BASALT SILL (DOLERITE)SAME MICRODOLERITES AS SECTION 24-3 PCE 1 (0-5), 2 (6-17), 3A (20-35), 3B (35-46), 4 (49-65) FINE TO MEDIUM-GRAINED MICRODOLERITES, INTERVAL (45-65) IS FINE-GRAINED, COARSER PYX SPOTS OCCUR WITHIN MEDIUM-GRAINED INTERVALS MASSIVE BASALT SILL WITH VEINS EXT MICRODOLERITES OF CORE 24 BELONG TO A SINGLE SILL AND GRAIN SIZE VARIATIONS ARE COMMON PYX comments : PYX SPOTS OCCUR WITHIN MED-GRAINED INTERVALS 61 462 A 25 1 0.0 615.00 615.00 615.52 ROBINSON, P. T. PLAG-CPX SPARSELY PHYRIC BASALT PCE 1 (0-8), 2 (10-15), 3 (17-21), 4 (25-27), 5 (30-43), 6 (45-51) SPARSELY PHYRIC, MEDIUM-GRAINED MASSIVE BASALT SILL comments: ALTERED, HIGHER COLOR INDEX APPEARS TO BE A RESULT OF ALTERATION COLOR INDEX IS HIGHER THAN BEFORE, AND APPEARS TO BE CREATED BY ALTERATION PLAG <1 0.77 | CPX <1 0.77 61 462 A 25 1 52.0 615.00 615.52 615.74 ROBINSON, P. T. DOLERITE FRAGMENTS PCE 7 (53-73) DOLERITE FRAGMENTS, SOME OF WHICH ARE FINER GRAINED MASSIVE BASALT SILL POSSIBLE SILL BOUNDARY IN THIS SECTION SUGGESTED BY SOME DOLERITE FRAGMENTS WITH FINE GRAIN SIZE 61 462 A 25 1 74.0 615.00 615.74 616.31 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTDOLERITE PCE 8 (75-86), 9 (90-99), 10 (101-117), 11 (119-131) SPARSELY PHYRIC, MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL THIS DOLERITE IS MORE LEUCOCRATIC THAN THE PREVIOUS UNIT CPX 1 <0.5-1 comments : MOST ARE <0.5MM, BUT SOME ARE 1MM IN SIZE 61 462 A 27 1 0.0 626.00 626.00 626.20 ROBINSON, P. T. CAVINGS 61 462 A 27 1 20.0 626.00 626.20 626.48 ROBINSON, P. T. MASSIVE BASALT SILL (DOLERITE) PCE 1 (21-25), 2 (29-32), 3 (35-40), 4 (43-47) DOLERITE HAS A FINER GRAIN SIZE, A FEW PHENOS (<<1%,<0.5MM) OF PLAG+CPX MASSIVE BASALT SILL, FEW CLAY VEINS MOD MORE MELONOCRATIC (HIGHER COLOR INDEX) THAN BELOW 48CM CPX <<1 <0.5 | PLAG <<1 <0.5 61 462 A 27 1 48.0 626.00 626.48 627.35 ROBINSON, P. T. MASSIVE BASALT SILL (DOLERITE)CPX-PLAG SPARSELY PHYRIC BASALT PCE 5 (50-57), 6 (60-70), 7 (71-80), 8 (82-99), 9 (101-110), 10 (112-120), 11 (121-130) SPARSELY PHYRIC, MANY AMOEBOID CLAY PATCHES (1-2MM), FROM 48 TO 85CM THE GRAIN SIZE IS COARSER THAN ABOVE 48CM AND GRAIN SIZE BELOW 85CM DECREASES DOWNWARD MASSIVE BASALT SILL, VEIN OF CALCITE+GREEN CLAY+ PYRITE+CHLORITE AT 52CM MOD CPX <0.5 comments : A FEW PERCENT OF CPX PHENOS | PLAG RARE CALCITE | CLAY comments : GREEN CLAY | CHLORITE | PYRITE 61 462 A 27 2 0.0 626.00 627.50 628.93 ROBINSON, P. T. MASSIVE BASALT SILL (DOLERITE) PCE 1 (0-18), 2 (20-29), 3 (30-36), 4 (40-45), 5 (48-55), 6 (57-80), 7 (72-91), 8 (93-101), 9 (104-128), 10 (130-141) FROM 0 TO 100CM GRAIN SIZE DECREASES DOWNWARD, FROM 100 TO 130CM IS A ZONE OF FINER GRAIN SIZE, AND BELO 130CM GRAIN SIZE INCREASES DOWNWARD MASSIVE BASALT SILL, CLAY AND CLAY+CHLORITE VEINS comments: ALTERED CLAY | CHLORITE 61 462 A 27 3 0.0 626.00 629.00 630.49 ROBINSON, P. T. PLAG-CPX SPARSELY PHYRIC DOLERITEMASSIVE BASALT PCE 1 (0-21), 2 (25-52), 3 (54-81), 4 (83-106), 5 (108-130), 6 (132-149) SPARSELY PHYRIC, INCREASING GRAIN SIZE DOWNWARD MASSIVE, THIN CLAY VEINS PERMEATE ALL ROCKS SLIGHTLY MORE MELANOCRATIC DOWNWARD CPX | PLAG 61 462 A 28 1 0.0 630.00 630.00 631.44 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-31), 2 (55-63), 3 (65-68), 4 (70-100), 5A (100-115), 5B (115-128), 6A (130-138) APHYRIC TO MICROPHYRIC, FINE TO MEDIUM-GRAINED DOLERITE, MICROLITES OF PLAG+CPX+MAGN MASSIVE BASALT SILL WITH VEINS WHICH ARE FILLED WITH CALCITE+CHLORITE+PYRITE+CLAY(SMEC OR PALAG) SLIGHTLY COLOR MEDIUM BLUISH GRAY 5B5/1 CPX comments : MICROPHENOS, PARTLY ALTERED TO CLAYS | PLAG comments : MICROPHENOS, RATIO OF CPX TO PLAG IS ABOUT 1 CALCITE | CHLORITE | PYRITE | CLAY.MIN comments : SMEC OR PALAG 61 462 A 28 1 0.0 630.00 630.00 631.44 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1B (32-39), 1C (39-54), 6B (139-144) MICROPHYRIC, MEDIUM TO SLIGHTLY COARSE-GRAINED DOLERITE MASSIVE BASALT SILL WITH VEINS WHICH ARE FILLED WITH CALCITE+CHLORITE+PYRITE+CLAY (SMEC OR PALAG) SLIGHTLY COLOR MEDIUM BLUISH GRAY 5B5/1 CPX comments : MICROPHENOS, PARTLY ALTERED TO CLAYS | PLAG comments : MICROPHENOS, RATIO OF CPX TO PLAG IS ABOUT 1 CALCITE | CHLORITE | PYRITE | CLAY.MIN comments : SMEC OR PALAG 61 462 A 28 2 0.0 630.00 631.50 632.93 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 28-1 PCE 1A (0-17), 1B (17-36), 1C (36-43), 1D (43-54), 2A (55-66), 2B (66-80), 2C (80-97), 2D (97-105), 2E (106-118), 2F (119-130), 2G (130-141) MICROPHYRIC, MEDIUM TO SLIGHTLY COARSE-GRAINED DOLERITE, INTERVALS (72-76) AND (134-138) ARE COARSE-GRAINED, LOWER BOUNDARIES OF INTERVALS ARE GRADUAL (GRANOPHYRE) MASSIVE BASALT SILL WITH VEINS FILLED WITH CALCITE, CHLORITE+PYRITE+CLAY, IN INTERVALS (72-76) AND (134-138) SPHERULITIC PLAG AGGREGATE (2 TO 3MM IN DIAMETER) SLIGHTLY THE UPPER BOUNDARIES OF ZONES (72-76) AND (134-138) ARE SHARP BUT LOWER BOUNDARIES ARE GRADUAL (GRANOPHYRE) CPX | PLAG CALCITE | CHLORITE | PYRITE | CLAY.MIN 61 462 A 28 3 0.0 630.00 633.00 633.66 TOKUYAMA, H. MASSIVE DOLERITE SILLSEE SECTION 28-1 PCE 1 (0-11), 2A (15-20), 2B (20-29), 2C (30-40), 2D (40-47), 3A (50-57), 3B (57-66) MICROPHYRIC, MEDIUM TO SLIGHTLY COARSE-GRAINED DOLERITE MASSIVE BASALT SILL, QUARTZ VEINS IN PCES 2A+2B+3A SLIGHTLY ALTERATION OCCURS IN PCES 2A+2B+3A PLAG | CPX QTZ comments : IN VEINS 61 462 A 28 3 66.0 630.00 633.66 634.40 TOKUYAMA, H. MASSIVE DOLERITE SILLSEE SECTION 28-1 PCE 3C (66-76), 3D (76-100), 3E (100-110), 3F (110-125), 3G (126-139) APHYRIC TO SPARSELY PHYRIC, FINE TO MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL, CALCITE+CHLORITE+PYRITE+CLAY VEINS SLIGHTLY ALTERATION IN PCES 3C+3F+3G PROCEEDS ALONG VEINS WITH PYRITE PLAG | CPX CALCITE | CHLORITE | PYRITE | CLAY.MIN 61 462 A 28 4 0.0 630.00 634.50 635.95 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-16), 1B (17-36), 1C (36-45), 2A (49-60), 2B (60-75), 2C (75-85), 2D (85-102), 2E (102-110), 2F (110-122), 2G (122-125), 2H (125-135), 2I (135-145) APHYRIC TO SPARSELY PHYRIC, DOLERITE IS FINE TO MEDIUM-GRAINED MASSIVE BASALT SILL WITH VEINS, PYRITE IN VEINS MOD ALTERATION IN PCES 1A+2A PROCEEDS ALONG VEIN WITH PYRITE PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS PYRITE 61 462 A 28 5 0.0 630.00 636.00 636.50 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 28-1 PCE 1 (0-27), 2 (28-40), 3 (43-49) APHYRIC TO SPARSELY PHYRIC, FROM 0 TO 27CM AND FROM 33 TO 48CM DOLERITE IS FINE TO MEDIUM-GRAINED, FROM 27 TO 33 DOLERITE IS MEDIUM TO SLIGHTLY COARSE- GRAINED AND HAS PLAG PHENOS AND IS IN PART GLOMEROPHYRIC MASSIVE BASALT SILL SLIGHTLY AG X 61 462 A 29 1 0.0 636.00 636.00 637.25 TOKUYAMA, H. MASSIVE DOLERITE SILLAPPEARS TO BE THE SAME AS 28-1 PCE 1A (0-25), 1B (25-80), 1C (80-93), 1D (92-125) APHYRIC TO SPARSELY PHYRIC, MEDIUM-GRAINED DOLERITE, A COARSE GRAINED SEPARATION (PLAG TO 5MM, ALTERED PYX TO 4MM) AT 59 TO 61CM MASSIVE BASALT SILL WITH THIN PYRITE+CLAY+CHLORITE VEINS, FROM 59 TO 61CM VEIN-LIKE SEPARATION BEARING COARSE (4-5MM) QTZ-FELDSPAR (GRANOPHYRIC AGGREGATES), MARGINS OF THIS SEPARATION ARE FINE- GRAINED AND ENRICHED IN DARK MINERALS, IN THE THICKER VEINS, PYRITE IS CUBIC AND PENTAGONAL DODECAHEDRIC AS COMPARED WITH THIN FILMS IN PREVIOUS CORES EXT PLAG comments : LARGEST 5MM AT VEIN-LIKE SEPARATION | CPX comments : LARGEST 4MM AT VEIN-LIKE SEPARATION PYX comments : SLIGHTLY ALTERED TO PALE GRAYISH-GREEN CLAY CLAY PYX comments : PALE GRAYISH -GREEN CLAY 61 462 A 29 2 0.0 636.00 637.50 638.75 TOKUYAMA, H. MASSIVE BASALT (DOLERITE) PCE 1A (0-6), 1B (6-30), 1C (30-64), 1D (51-70), 1E (66-75), 1F (72-100), 1G (100-120) MEDIUM-GRAINED DOLERITES, DOLERITE OF SECTION 2 IS SLIGHTLY MORE COARSE-GRAINED AND ENRICHED IN DARK CLAY SPOTS AS COMPARED WITH 29-1 MASSIVE BASALT SILL WITH VEINS, TWO SYSTEMS OF FRACTURES ARE DISTINCTLY DEVELOPED: 30 DEGREE AND 60 DEGREE INCLINATIONS RELATIVE TO A VERTICAL AXIS 61 462 A 29 3 0.0 636.00 639.00 640.45 SHCHEKA, S. A. MASSIVE BASALT PCE 1A (0-30), 1B (30-52), 1C (53-77), 1D (77-116), 1E (116-145) APHYRIC, MEDIUM-GRAINED DOLERITES MASSIVE BASALT WITH VEINS, TWO SYSTEMS OF FRACTURES ARE DISTINCTLY DEVELOPED: 30 DEGREE AND 60 DEGREE INCLINATIONS RELATIVE TO VERTICAL AXIS EXT 61 462 A 29 4 0.0 636.00 640.50 641.90 SHCHEKA, S. A. MASSIVE BASALT (DOLERITE)SAME DOLERITE AS SECTION 29-4 PCE 1A (0-62), 1B (63-82), 1C (82-145) MEDIUM-GRAINED DOLERITE, FROM 80 TO 140CM DOLERITE IS SLIGHTLY FINER GRAINED, AND DOES NOT HAVE DARK COARSE SPOTS MASSIVE BASALT WITH VEINS 61 462 A 29 5 0.0 636.00 642.00 642.97 SHCHEKA, S. A. MASSIVE BASALT (DOLERITE) PCE 1A (0-10), 1B (12-35), 1C (35-94) MEDIUM-GRAINED (AS IN 80-140CM OF 29-4) MASSIVE BASALT WITH VEINS, THICK VEIN (7-9CM) INCLUDES A LATER OCCURRENCE OF CALCITE IN ADDITION TO PYRITE+CLAY+CHLORITE NORMALLY FORMING THE VEINS comments: ALTERED ABOUT VEINS CALCITE | PYRITE 61 462 A 29 6 0.0 636.00 643.50 644.52 SHCHEKA, S. A. MASSIVE BASALT (DOLERITE)SAME DOLERITE AS SECTION 29-5 PCE 1A (0-100) MEDIUM-GRAINED (AS IN 29-5) MASSIVE BASALT WITH VEINS, VEINS ARE TYPICALLY COMPOSED OF A COMBINATION OF PYRITE+CLAY+CHLORITE AND THICKER VEINS ALSO INCLUDE CALCITE comments: ALTERED ABOUT VEINS CALCITE comments : IN LARGER VEINS | PYRITE | CHLORITE | CLAY.MIN 61 462 A 30 1 0.0 645.00 645.00 646.49 ROBINSON, P. T. CPX MOD PHYRIC DOLERITEMASSIVE BASALT SILL PCE 1 (0-4), 2 (5-62), 3 (64-71), 4 (74-77), 5 (80-149) MOD PHYRIC, UNIFORMLY MEDIUM-GRAINED (AS IN SECTION 29-1) MASSIVE BASALT SILL, FROM 80 TO 90CM DOLERITE HAS A QTZ OR CHALC OR ZEOLITE VEIN WHICH IS WHITE WITH CLAY MARGINS, IN ADDITION, THIN (<0.1MM) CLAY VEINS OCCURS AT INCLINATIONS OF 15 TO 20 DEGREES FROM HORIZONTAL FRESH NO APPARENT ALTERATION OF THE GNDMASS CPX 4 <0.5 PLAG | CPX | OP.MINS comments : HOMOGENEOUS MATRIX, NO APPARENT ALTERATION comments : QTZ OR CHALC OR ZEOL IN VEIN | CLAY.MIN comments : IN VEINS 61 462 A 30 2 0.0 645.00 646.50 647.98 ROBINSON, P. T. DOLERITEMASSIVE BASALT SILLSAME SILL AS IN SECTION 30-1 PCE 1 (0-148) UNIFORMLY MED-GRAINED DOLERITE MASSIVE BASALT SILL,THERE ARE THREE VEIN TYPES: 1) CALCITE (0 TO 5CM), 2) WHITE QTZ OR CHALC OR ZEOL WHICH HAS CLAY MARGINS, AND 3) THIN (<0.1MM) CLAY FRESH NO APPARENT ALTERATION OF THE GNDMASS INDISTINGUISHABLE IN ANY FEATURES FROM PREVIOUS SECTION CPX 4 <0.5 comments : QTZ OR CHALC OR ZEOL IN VEIN | CLAY.MIN comments : IN VEINS 61 462 A 30 3 0.0 645.00 648.00 649.48 ROBINSON, P. T. MASSIVE DOLERITEBASALT SILLSAME SILL AS IN SECTIONS 30-1 AND 30-2 PCE 1 (0-148) UNIFORMLY MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL, THERE ARE THREE VEIN TYPES: 1) CALCITE, 2) WHITE QTZ OR CHALC OR ZEOL WHICH HAS CLAY MARGINS, AND 3) THIN ABUNDANT CLAY VEINS (<0.1MM) REGULARLY SPACED AT 2 TO 3CM INTERVALS AND THEY DIP 15 TO 25 DEGREES RELATIVE TO HORIZONTAL FRESH NO APPARENT ALTERATION OF THE GNDMASS CPX 4 <0.5 PLAG | CPX | OP.MINS comments : HOMOGENEOUS MATRIX, NO APPARENT ALTERATION comments : QTZ OR CHALC OR ZEOL IN VEIN | CLAY.MIN comments : IN VEINS 61 462 A 30 4 0.0 645.00 649.50 650.82 ROBINSON, P. T. MASSIVE DOLERITEBASALT SILLSAME SILL AS IN SECTIONS 30-1 TO 30-4 PCE 1 (0-132) UNIFORMLY MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL WITH VEINS, THERE ARE THREE VEIN TYPES: 1) CALCITE, 2) WHITE QTZ OR CHALCEDONY OR ZEOLITE VEINS WITH CLAYEY MARGINS, AND 3) THIN (<0.1MM) ABUNDANT CLAY VEINS REGULARLY SPACED AT 2 TO 3CM INTERVALS AND THEY DIP 15 TO 25 DEGREES RELATIVE TO HORIZONTAL FRESH NO APPARENT ALTERATION OF GNDMASS CPX PLAG | CPX | OP.MINS comments : HOMOGENEOUS MATRIX CALCITE comments : WHITE QTZ OR CHALCEDONY OR ZEOLITE IN VEIN | CLAY.MIN 61 462 A 30 5 0.0 645.00 651.00 652.40 ROBINSON, P. T. MASSIVE DOLERITEBASALT SILLSAME SILL AS IN SECTIONS 30-1 TO 30-4 PCE 1 (0-70), 2 (72-140) MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL WITH VEINS, THERE ARE THREE VEIN TYPES: 1) CALCITE, 2) WHITE QTZ OR CHALCEDONY OR ZEOLITE WHICH HAVE CLAYEY MARGINS, AND 3) THIN (<2MM, SLIGHTLY THICKER THAN SECTION 30-4) ABUNDANT CLAY VEINS REGULARLY SPACED AT 2 TO 3CM INTERVALS AND THEY DIP 15 TO 25 DEGREES FROM THE HORIZONTAL FRESH NO APPARENT ALTERATION OF GNDMASS CPX 4 <0.5 PLAG | CPX | OP.MINS comments : HOMOGENEOUS MATRIX CALCITE comments : WHITE QTZ OR CHALCEDONY OR ZEOLITE IN VEIN | CLAY.MIN 61 462 A 30 6 0.0 645.00 652.50 653.91 ROBINSON, P. T. MASSIVE DOLERITEBASALT SILLSAME SILL AS IN SECTIONS 30-1 TO 30-5 PCE 1 (0-120), 2 (121-140) MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL WITH VEINS, THERE ARE THREE VEIN TYPES: 1) CALCITE, 2) WHITE QTZ OR CHALCEDONY OR ZEOLITE WHICH HAVE CLAYEY MARGINS, AND 3) THIN (<2MM, SLIGHTLY THICKER THAN SECTION 30-5) ABUNDANT CLAY VEINS REGULARLY SPACED AT 2 TO 3CM INTERVALS AND THEY DIP 15 TO 25 DEGREES FROM THE HORIZONTAL FRESH NO APPARENT ALTERATION OF GNDMASS CPX 4 <0.5 PLAG | CPX | OP.MINS comments : HOMOGENEOUS MATRIX CALCITE comments : WHITE QTZ OR CHALCEDONY OR ZEOLITE, IN VEIN | CLAY.MIN 61 462 A 31 1 0.0 654.00 654.00 655.05 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1A (0-38), 2A (41-51), 2B (52-60), 3 (65-76), 4A (79-91), 4B (92-95), 5 (97-103) APHANITIC, SLIGHTLY PHYRIC, FINE TO MEDIUM-GRAINED DOLERITE MASSIVE BASALT SILL WITH CHLORITE VEINS SLIGHTLY PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS PLAG comments : MICROLITES | CPX comments : MICROLITES | MAGN comments : MICROLITES CHLORITE 61 462 A 32 1 0.0 655.50 655.50 656.00 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1 (0-8), 2A (10-22), 2B (24-37), 3 (41-49) APHYRIC TO MICROPHYRIC, INTERVAL (30-50) IS MICROPHYRIC, INTERVAL (0-30) IS FINE-GRAINED MASSIVE WITH CLAY VEINS MOD AT 50CM LOWER CONTACT OF THE SILL WITH SEDIMENT, MAY BE CHILLED? PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, THE RATIO OF PLAG TO CPX=1 CLAY.MIN comments : IN VEINS 61 462 A 36 CC 0.0 685.00 685.10 685.50 ROBINSON, P. T. PLAG-CPX MOD PHYRIC BASALTBASALT SILL (DOLERITE) PCE 1 (2-5), 2 (11-15), 3 (20-26), 4 (32-35) MOD PHYRIC, TEXTURES RANGE FROM VERY FINE-GRAINED OR GLASSY (VARIOLITIC?) TO HOLOCRYSTALLINE MICRODOLERITIC BASALT SILL, PCES WITH TEXTURES WHICH RANGE FROM VERY FINE-GRAINED OR GLASSY (VARIOLITIC?) TO HOLOCRYSTALLINE MICRODOLERITIC REPRESENT MARGINAL AND INNER CRYSTALLINE FACIES OF A BASALTIC SILL- RESPECTIVELY, CLAY VEINS PRESENT comments: ALTERATION IS NOT VISIBLE WITH THE UNAIDED EYE EXCEPT FOR ONE CLAY VEIN, BUT THESE ROCKS ARE "GREEN STONES" SUGGESTING SIGNIFICANT GNDMASS ALTERATION THERE ARE NO ORIENTED PCES AND ALL PCES EXCEPT PCE 5 ARE OUT OF STRATIGRAPHIC ORDER PLAG <<1 <0.2 | CPX 2 0.03 CLAY.MIN comments : IN VEINS 61 462 A 38 1 0.0 691.00 691.00 692.48 ROBINSON, P. T. APHYRIC BASALTMASSIVE BASALT SILL (DOLERITE) PCE 1 (1-2), 2 (5-15), 3 (17-22), 4 (27-33), 5 (35-40), 6 (42-148) APHYRIC WITH A FEW CPX PHENOS (<1%, 0.5MM), FROM 0 TO 30CM GRAIN SIZE INCREASES DOWNWARD, FROM 30 TO 150CM THE GRAIN SIZE IS RELATIVELY CONSTANT MASSIVE BASALT SILL, MASSIVE GNDMASS OF PLAG CPX <1 0.5 PLAG | CPX | OP.MINS | CLAY.MIN comments : ROCK HAS A FEW CLAY SPOTS 61 462 A 38 2 0.0 691.00 692.50 693.50 ROBINSON, P. T. APHYRIC BASALTMASSIVE BASALT PCE 1 (0-45), 2 (47-89), 3 (94-99) APHYRIC, INTERVAL (0-44) HAS A FEW PLAG AND CPX PHENOS (<<1%, 0.2-0.3MM), IN THE UPPER PORTION (AROUND 60CM) A FEW PHENOS OF CPX AND PLAG (<<1%, 0.2 TO 0.5MM), IN THE UPPER PORTION PLAG ABUNDANCE IS APPROXIMATELY EQUAL TO CPX, DOWNWARD GLOMEROPHYRIC CLUSTERS BECOME COMMON AND CPX>PLAG IN ABUNDANCE, INTERVAL (0-45) THE BASALT GRAIN-SIZE DECREASES DOWNWARD TO A GLASSY MARGIN AT 44-45CM, FINE-GRAINED MATRIX, CLAY SPOTS OF ALTERATION ARE PRESENT FROM THE GLASSY MARGIN (44CM) UPWARD, GLASSY MARGIN AT 47-48CM, BELOW 48CM GRAIN SIZE GRADUALLY INCREASES MASSIVE BASALT, AT 80-90CM VEINS ARE OF PYRITE+ CALCITE comments: CLAY ALTERATION SPOTS ARE PRESENT FROM 44CM UPWARD CPX <<1 0.2-0.4 comments : INTERVAL (0-45) | COMBINE <<1 0.2-0.5 comments : INCLUDING PLAG+CPX, INTERVAL (48-100) CLAY | CALCITE comments : IN VEINS | PYRITE comments : IN VEINS 61 462 A 38 2 100.0 691.00 693.50 693.80 ROBINSON, P. T. CPX MOD PHYRIC BASALT PCE 4 (101-109), 5 (112-127) MOD PHYRIC, MEDIUM TO FINE-GRAINED SIZE MASSIVE BASALT, AT 110 TO 125CM VEINS ARE PYRITE+ CLAY CPX 2-4 61 462 A 39 1 0.0 692.00 692.00 693.47 TOKUYAMA, H. CPX-PLAG MICROPHYRIC BASALTMASSIVE BASALT PCE 1 (0-6), 2A (7-22), 2B (22-33), 3 (36-48), 5 (56-65), 6 (70-75), 7 (78-90), 8 (92-100), 9 (100-110), 10A (112-125), 10B (125-131), 10C (135-147) MICROPHYRIC, HYALOPILITIC TO INTERSERTAL, INTERVAL (0-47) IS FINE TO SLIGHTLY COARSE-GRAINED, INTERVAL (55-147) IS FINE TO SLIGHTLY MEDIUM-GRAINED, GRAIN SIZE INCREASES DOWNWARD MASSIVE BASALT | VEINS ARE FILLED WITH CHLORITE AND PYRITE AND CLAY.MINS(SMEC OR PALAG) SLIGHTLY TO FRESH COLOR OF FINE-GRAINED BASALT-MEDIUM LIGHT GRAY (N4), COLOR OF SLIGHTLY MEDIUM-GRAINED BASALT-MEDIUM GRAY (N5) CPX comments : ABUNDANCE OF CPX MICROPHENOS IS GREATER THANPLAG MICROPHENOS | PLAG comments : PLAG MICROPHENOS PLAG comments : MICROLITES | CPX comments : MICROLITES | MAGN comments : MICROLITES | GLASS CHLORITE | PYRITE | CLAY.MIN comments : SMEC OR PALAG 61 462 A 39 1 0.0 692.00 692.00 693.47 TOKUYAMA, H. APHYRIC BASALT PCE 4 (50-55) APHYRIC, UPPER PART IS A CHILLED GLASSY MARGIN, MICROPHENOS OF CPX>PLAG, GLASS MASSIVE BASALT, VEINS OF PYRITE+CHORITE+CLAY.MINS (SMEC,PALAG) FRESH TO SLIGHTLY GLASSY MARGIN IS GRAYISH BLACK (N2) CPX comments : MICROPHENOS | PLAG comments : MICROPHENOS comments : MICROLITES IN GNDMASS 61 462 A 39 2 0.0 692.00 693.50 694.98 TOKUYAMA, H. MASSIVE BASALT PCE 1 (0-15), 2A (18-30), 2B (30-40), 2C (40-60), 3 (65-78), 4 (81-90), 5A (96-111), 5B (111-121), 6A (125-137), 6B (137-148) FROM 0 TO 50(?)CM BASALT IS SLIGHTLY MEDIUM TO MEDIUM-GRAINED, GRAIN SIZE INCREASES DOWNWARD, FROM 50 TO 150CM BASALT IS MEDIUM-GRAINED MASSIVE BASALT, VEINS OF CHLORITE+PYRITE+CLAY (SMEC>PALAG) SLIGHTLY SAME UNIT AS SECTION 39-1 61 462 A 39 3 0.0 692.00 695.00 696.46 TOKUYAMA, H. MASSIVE BASALT PCE 1 (1-8), 2A (10-31), 2B (32-49), 2C (50-60), 3A (67-84), 3B (84-98), 3C (98-115), 3D (115-130), 3E (130-139), 3F (139-146) FROM 0 TO 115CM BASALT IS MEDIUM-GRAINED, FROM 115 TO 137CM BASALT IS FINE TO SLIGHTLY FINE-GRAINED, GRAIN SIZE GRADUALLY DECREASES DOWNWARD, PCE 3F HAS A CHILLED MARGIN AT 144-145CM MASSIVE BASALT, VEINS OF CHLORITE+PYRITE+CLAY (SMEC>PALAG) SAME UNIT AS SECTION 39-2 CHLORITE | PYRITE | SMEC | PALAG 61 462 A 39 4 0.0 692.00 696.50 697.95 TOKUYAMA, H. MASSIVE BASALT PCE 1 (0-10), 2 (10-20), 3 (22-30), 4 (32-41), 5 (42-51), 6 (54-62), 7 (65-74), 8 (75-84), 9A (85-101), 9B (101-110), 10 (112-120), 11 (121-130), 12 (134-145) FROM 0 TO 9CM IS A GLASSY CHILLED BASALT MARGIN, FROM 9 TO 64CM BASALT HAS MINOR DOWNWARD CHANGES OF GRAIN SIZE-FROM FINE TO SLIGHTLY MEDIUM- GRAINED, FROM 64 TO 66CM (UPPER PART OF PCE 7) IS A GLASSY CHILLED BASALT MARGIN, FROM 66 TO 93(?)CM (PCE 7, LOWER PART, TO UPPER PART OF PCE 9A) BASALT INCREASES FROM FINE TO SLIGHTLY MEDIUM-GRAINED, FROM 93 TO 120CM (PCES 9A, LOWER PART, TO 10) BASALT DECREASES FROM SLIGHTLY MEDIUM TO FINE-GRAINED, FROM 120 TO 150CM (PCES 11+12) UNIT C IS WITHOUT A CHILLED MARGIN, GRAIN SIZE INCREASES DOWNWARD FROM FINE TO SLIGHTLY MEDIUM-GRAINED MASSIVE BASALT, VEINS OF CHLORITE+PYRITE+CLAY.MINS (SMEC>PALAG) SLIGHTLY THREE UNITS ARE OBSERVED: UNIT A (0-64), UNIT B (64-120), UNIT C (120-150) CHLORITE | PYRITE | SMEC | PALAG 61 462 A 39 5 0.0 692.00 698.00 699.20 TOKUYAMA, H. MASSIVE BASALT PCE 1 (1-8), 2 (10-20), 3A (22-35), 3B (35-42), 3C (42-53), 4 (55-65), 5 (65-72), 6 (75-83), 7 (85-95), 8 (98-120) FROM 0 TO 43CM (PCES 1-3B) BASALT INCREASES IN GRAIN SIZE FROM SLIGHTLY MEDIUM TO MEDIUM, FROM 43 TO 75CM (PCES 3C-5) BASALT GRAIN SIZE DECREASES FROM MEDIUM TO FINE, FROM 75 TO 95CM (PCES 6+7) BASALT IS FINE TO SLIGHTLY MEDIUM-GRAINED, FROM 95 TO 120CM (PCES 7+8) BASALT GRAIN SIZE DECREASES DOWNWARD FROM SLIGHTLY MEDIUM TO FINE MASSIVE, VEINS OF CHLORITE+PYRITE+CLAY.MINS (SMEC, PALAG) SLIGHTLY THIS UNIT CONTINUED FROM SECTION 39-4, UNIT A (?) OCCURS FROM (0-75) AND UNIT B (?) OCCURS FROM (75-120) CHLORITE | PYRITE | SMEC | PALAG 61 462 A 40 1 0.0 702.00 702.00 702.54 TOKUYAMA, H. MASSIVE BASALTSAME MINERALOGY AS SECTION 39-1 PCES 1 (0-4), 2 (6-9), 3A (13-23), 3B (25-30), 4A (31-45), 4B (45-50), 4C (50-53) INTERVAL (0-19) BASALT VARIES FROM FINE TO SLIGHTLY MEDIUM-GRAINED, INTERVAL (19-30) (PCES 3A+3B) BASALT IS MEDIUM-GRAINED, INTERVAL (30-54) (PCES 4A-4C) BASALT VARIES FROM MEDIUM- GRAINED TO A CHILLED MARGIN (BOTTOM 2CM OF PCE 4C) MASSIVE BASALT SLIGHTLY TWO UNITS OCCUR IN THIS SECTION, UNIT A IS 0 TO 54CM 61 462 A 40 1 54.0 702.00 702.54 702.86 TOKUYAMA, H. MASSIVE BASALTSAME LITHOLOGY AS SECTION 39-1 PCES 5 (55-86) INTERVAL (55-64) BASALT HAS A CHILLED MARGIN (55-57) AND GRAIN SIZE INCREASES DOWNWARD TO SLIGHTL MEDIUM, INTERVAL (64-71) BASALT IS SLIGHTLY MEDIUM- GRAINED, INTERVAL (71-86) BASALT VARIES DOWNWARD FROM SLIGHTLY MEDIUM-GRAINED TO A CHILLED MARGIN (84-86) MASSIVE BASALT SLIGHTLY TWO UNITS OCCUR IN THIS SECTION, UNIT B IS 54 TO 86CM 61 462 A 40 1 86.0 702.00 702.86 703.50 TOKUYAMA, H. SEDIMENT 61 462 A 40 2 0.0 702.00 703.50 703.72 TOKUYAMA, H. VOLCANICLASTICS 61 462 A 40 2 22.0 702.00 703.72 704.05 TOKUYAMA, H. MASSIVE BASALTSAME BASALT AS MENTIONED IN SECTION 40-1 PCES 1A (24-34), 1B (34-54) CHILLED MARGIN AT 24-26CM, GRAIN SIZE INCREASES DOWNWARD AND BECOMES MEDIUM-GRAINED AT 55CM MASSIVE BASALT SLIGHTLY OM 24 TO 55CM IS A SINGLE BASALT UNIT 61 462 A 41 1 0.0 711.00 711.00 712.40 TOKUYAMA, H. MASSIVE DOLERITE SILL 5A (40-58), 5B (55-107), 5C (107-137) MICROPHYRIC, DOLERITE WITH EQUAL AMOUNTS OF PLAG AND CPX, MICROPHENO GRAIN SIZE VARIES MEDIUM TO SLIGHTLY COARSE-GRADUALLY INCREASING DOWNWARD, DOLERITE IS INTERGRANULAR TO SUBOPHITIC MASSIVE BASALT SILL, VEINS ARE FILLED WITH CALCITE+ CHLORITE+PYRITE+SMEC SLIGHTLY BASALT IS MEDIUM GRAY (N5) PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, THE RATIO PLAG:CPX IS APPROXIMATELY1 PLAG | CPX | TI-MAGN comments : MICROLITES 61 462 A 41 2 0.0 711.00 712.50 713.78 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 41-1 PCE 1A (1-43), 1B (45-80), 1C (80-128) SLIGHTLY COARSE-GRAINED, SUBOPHITIC MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CALCITE+CHLORITE+PYRITE+SMEC BUT CHLORITE+PYRITE VEINS ARE PREVAILING, HOMOGENEOUS SLIGHTLY BASALT IS MEDIUM GRAY (N5) PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, THE RATIO PLAG:CPX IS APPROXIMATELY1 PLAG | CPX | TI-MAGN comments : MICROLITES CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 3 0.0 711.00 714.00 715.34 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 41-1 PCE 1A (1-60), 1B (60-83), 1C (83-115), 1D (115-132) SLIGHTLY COARSE-GRAINED, SUBOPHITIC MASSIVE DOLERITE SILL, HOMOGENEOUS, VEINS ARE FILLED WITH CALCITE+CHLORITE+PYRITE+SMEC, CHLORITE+PYRITE VEINS ARE PREVALENT SLIGHTLY BASALT IS MEDIUM GRAY (N5), DOLERITE IS THE SAME UNIT AS SECTION 41-1 PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 4 0.0 711.00 715.50 717.00 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 41-1 PCE 1A (1-60), 1B (59-128), 1C (129-150) MICROPHYRIC, DOLERITE IS SPOTTED BY ALTERATION TO CLAY, SUBOPHITIC TO INTERGRANULAR, GRAIN SIZE DECREASES DOWNWARD FROM SLIGHTLY COARSE TO MEDIUM, MICROPHENOS OF PLAG ARE LESS COMMON IN THE UPPER PART OF THE SECTION THAN IN THE LOWER PART MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CALCITE+CHLORITE+PYRITE+SMEC, CHLORITE+PYRITE ARE PREVALENT MED ALTERATION TO CLAY SPOTS DOLERITE SAME UNIT AS 41-1 PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 5 0.0 711.00 717.00 717.90 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 41-1 PCE 1A (1-22), 1B (22-42), 1C (42-50), 1D (50-61), 1E (61-93) MEDIUM-GRAINED DOLERITE, INTERGRANULAR TO INTERSERTAL MASSIVE DOLERITE SILL, HOMOGENEOUS SLIGHTLY BASALT IS MEDIUM GRAY (N5) PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 6 0.0 711.00 718.50 719.90 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME AS SECTION 41-1 PCE 1A (2-35), 1B (35-121), 1C (122-140) INTERVAL (0-121) BASALT GRAIN SIZE DECREASES DOWNWARD FROM SLIGHTLY COARSE TO MEDIUM, SUBOPHITIC TO INTERGRANULAR MASSIVE DOLERITE SILL, WITH VEINS, VEINS ARE FILLED WITH CALCITE+CHLORITE+PYRITE+SMEC MOD TO SLIGHTLY PCES 1A+1B | EXT FROM 120 TO 140CM (PCE 1C) BASALT HAS A BADLY ALTERED SURFACE AND THUS THE BASALT'S GRAIN SIZE IS NOT APPARENT PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 7 0.0 711.00 720.00 721.08 ROBINSON, P. T. APHYRIC TO CPX SLIGHTLY PHYRIC BASALTMASSIVE BASALT SILL (DOLERITE) PCE 1A (1-19), 1B (16-31), 1C (31-40), 1D (41-56), 1E (56-86), 1F (90-100) APHYRIC TO SLIGHTLY MICROPHYRIC, INTERVAL (0-105) DOLERITE IS MEDIUM TO COARSE-GRAINED (DECREASING DOWNWARD), ALTERATION SPOTS MASSIVE BASALT SILL WITH VEINS FILLED WITH CALCITE+ CHLORITE+PYRITE+SMEC, CHLORITE+PYRITE VEINS PREVAIL SLIGHTLY FEW SPOTS OF ALTERATION TO CLAY CONTACT OF BASALT AND SEDIMENT AT 105CM, BASALT IS MEDIUM GRAY (N5) CPX comments : MICROPHENOS CALCITE | CHLORITE | PYRITE | SMEC 61 462 A 41 7 108.0 711.00 721.08 721.50 ROBINSON, P. T. SEDIMENT 61 462 A 44 1 0.0 729.00 729.00 730.48 ROBINSON, P. T. CPX MOD PHYRIC BASALT PCE 1 (9-20), 2 (25-34), 3 (36-65), 4 (66-81), 5 (85-95), 6 (100-105), 7 (109-120), 8 (124-148) MOD PHYRIC, POSSIBLE CRENULATED MARGINS, UNIT 1 (9-34) IS GLASSY (9-10) AND FINE-GRAINED (10-34), UNIT 2 (35-65) IS GLASSY (33-34) AND (63-64) AND FINE-GRAINED (34-63), UNIT 3 (66-148) IS GLASSY (66-68) AND (146-148) AND FINE-GRAINED (68-146), VARIABLY GLASSY AND HOLOXTLN MATRIX THESE THREE BASALT UNITS MAY BE SILLS WITH CRENULATED MARGINS OR PILLOWS comments: CLAYEY ALTERED SPOTS THREE BASALT UNITS, UNIT 1 (9-34)+UNIT 2 (35-65)+ UNIT 3 (66-148) CHALC,QTZ SPHERULE comments : NEAR THE GLASSY MARGINS ARE DRUSY AND VUGGY CHALC-QTZ IN SMALL SPHERULES CPX 3-4 PLAG | CPX | OP.MINS CHALC | QTZ | CHLORITE GLASS | CLAY.MIN 61 462 A 44 2 0.0 729.00 730.50 731.95 ROBINSON, P. T. CPX MOD PHYRIC BASALTSAME AS SECTION 1 PCE 1 (2-9), 2 (13-18), 3 (22-30), 4 (32-36), 5 (41-50), 6 (54-80), 7 (81-98), 8 (103-110), 9 (114-122), 10 (126-131), 11 (135-145) MOD PHYRIC, POSSIBLE CRENULATED MARGINS, UNIT 4 (0-80) IS GLASSY (0-37) AND FINE-GRAINED (37-80), UNIT 5 (80-150(?)) IS GLASSY (81-83) AND 2CM OF ONE OF THE PCES NEAR THE BOTTOM OF THE SECTION AND FINE-GRAINED (83-135(?)) AND FRAGMENTS TO 150CM THESE BASALT UNITS MAY BE SILLS WITH CRENULATED MARGINS OR PILLOWS TWO UNITS PRESENT-INTERVALS (0-80) AND (80-150) 61 462 A 44 3 0.0 729.00 732.00 733.40 ROBINSON, P. T. PLAG-PYX PHYRIC BASALTSAME AS SECTIONS 1+2 PCE 1 (0-10), 2 (13-16), 3 (20-23), 4 (25-35), 5 (40-45), 6 (50-61), 7 (73-75), 8 (80-140) PHYRIC, POSSIBLE CRENULATED MARGINS, PCES OF GLASSY BASALT OCCURS IN INTERVAL (0-14), FINE-GRAINED IN INTERVAL (14-76) THE BASALT (UNIT 6) MAY BE A SILL WITH CRENULATED MARGINS OR PILLOWS BELOW 76CM ALL PCES (PCE 8) ARE CORE CATCHER SAMPLES WHOSE ORIENTATION AND STRATIGRAPHIC POSITION ARE UNKNOWN CPX | PLAG 61 462 A 45 1 0.0 733.00 733.00 734.50 SHCHEKA, S. A. PLAG-PYX SLIGHTLY PHYRIC BASALT PCES 1A (0-18), 1B (16-30), 1C (30-40), 3C (90-103), 3D (104-120), 4 (122-140), 5 (141-148) SLIGHTLY PHYRIC, FINE-GRAINED, BASALT WITH DISSEMINATED VARIOLITIC (GLASSY) SPOTS BASALT SILL CUT BY CALCITE+CHLORITE+CLAY+PYRITE VEINS EXT CPX | PLAG CALCITE | CHLORITE | CLAY.MIN | PYRITE 61 462 A 45 1 0.0 733.00 733.00 734.50 SHCHEKA, S. A. PLAG-PYX PHYRIC BASALT PCE 2 (41-45), 3A (47-60), 3B (60-90) PHYRIC, MORE XTLN PHYRIC THAN REST OF SECTION, COARSER GRAINED, NO GLASSY SPOTS BASALT SILL CUT BY CALCITE+CHLORITE+CLAY+PYRITE VEINS, FROM 49 TO 51CM THERE IS A VEIN OF COARSE (3-4MM) CRYSTALS LIKE TRANSPARENT PALE-GREENISH ZEOL (PHILLIPSITE) CPX | PLAG CALCITE | CHLORITE | CLAY.MIN | ZEOL comments : PROBABLY PHILLIPSITE 61 462 A 45 2 0.0 733.00 734.50 735.82 SHCHEKA, S. A. BASALT SILLIDENTICAL TO INTERVAL (0-40) OF SECTION 45-1 PCE 1 (0-7), 2A (10-17), 2B (16-30), 2C (30-40), 3 (92-110), 4 (112-131) SLIGHTLY PHYRIC, FINE-GRAINED BASALT SILL, IN GENERAL VEINS ARE FILLED WITH CALCITE+CHLORITE+CLAY+PYRITE EXT PLAG | CPX CALCITE | CHLORITE | CLAY.MIN | PYRITE 61 462 A 45 2 0.0 733.00 734.50 735.82 SHCHEKA, S. A. PLAG-CPX PHYRIC BASALTIDENTICAL TO INTERVAL (40-92) OF SECTION 45-1 PCE 2D (40-51), 2E (51-70), 2F (70-90) PHYRIC, MORE COARSE-GRAINED THAN REST OF SECTION BASALT SILL, IN GENERAL VEINS ARE FILLED WITH CALCITE+CHLORITE+CLAY+PYRITE EXT PLAG | CPX CALCITE | CHLORITE | CLAY.MIN | PYRITE 61 462 A 45 3 0.0 733.00 736.00 737.11 SHCHEKA, S. A. BASALT SILL PCE 1A (0-11), 1B (12-20), 1C (20-35), 1D (35-60), 2 (61-79), 3A (80-100), 3B (100-110) SLIGHTLY PHYRIC, MEDIUM-GRAINED, NO GLASSY SPOTS, MORE XTLN THAN THE MIDDLE OF THE PREVIOUS SECTION BASALT SILL, VEINS ARE FILLED WITH CALCITE+CHLORITE+ CLAY+PYRITE OL | PLAG CALCITE | CHLORITE | CLAY | PYRITE 61 462 A 46 1 0.0 738.00 738.00 738.03 TOKUYAMA, H. SEDIMENT 61 462 A 46 1 3.0 738.00 738.03 739.31 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (5-20), 1B (21-56), 1C (55-66), 1D (67-80), 1E (80-93), 1G (106-131) FROM 5 TO 67CM BASALT VARIES FROM FINE TO SLIGHTLY MEDIUM-GRAINED AND BASALT IS HYALOPILITIC TO INTERSERTAL, A DISTINCT UPPER CHILLED MARGIN WAS NOT FOUND, FROM 67 TO 131CM BASALT IS MEDIUM-GRAINED AND INTERSERTAL TO INTERGRANULAR AND THERE IS NO GLASS A IN THE TOP INTERVAL MASSIVE DOLERITE SILL WITH VEINS OF CHLORITE+PYRITE MOD TO EXT MICROPHENOS OFTEN ALTERED, GNDMASS ALSO APPEARS TO BE BADLY ALTERED COLOR OF BASALT PCES 1A-1C IS MEDIUM LIGHT GRAY (N6), COLOR OF BASALT PCES 1D-1G IS MEDIUM GRAY (N5) CPX comments : MICROPHENOS CLAY.MIN CPX | CHLORITE | PYRITE 61 462 A 46 2 0.0 738.00 739.50 740.83 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME CONSTITUENT MINERALS AS SECTION 1 PCE 1A (0-6), 1B (7-24), 2A (25-41), 2B (41-51), 2C (51-56), 3A (58-80), 3B (80-95), 3C (89-102), 3D (101-113), 4 (119-133) SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERSERTAL TO INTERGRANULAR MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+PYRITE MOD TO EXT SAME UNIT AS SECTION 46-1 CPX comments : MICROPHENOS CHLORITE | PYRITE 61 462 A 46 3 0.0 738.00 741.00 742.25 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME CONSTITUENT MINERALS AS SECTION 1 PCE 1 (1-28), 2A (31-51), 2B (52-70), 2C (70-78), 2D (78-95), 2E (95-125) SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERSERTAL TO INTERGRANULAR MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+PYRITE MOD SAME UNIT AS SECTION 46-2 CPX comments : MICROPHENOS CHLORITE | PYRITE 61 462 A 46 4 0.0 738.00 742.50 743.21 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME CONSTITUENT MINERALS AS 46-1 PCE 1A (2-22), 1B (24-71) MICROPHYRIC, SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERSERTAL TO INTERGRANULAR MASSIVE DOLERITE SILL, PYRITE+CHLORITE VEINS MOD SAME UNIT AS 46-3 CPX comments : MICROPHENOS PYRITE | CHLORITE 61 462 A 46 4 71.0 738.00 743.21 743.90 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 2A (71-90), 2B (110-140) MEDIUM TO SLIGHTLY COARSE-GRAINED, INTERGRANULAR TO SUBOPHITIC MASSIVE DOLERITE SILL, PYRITE+CHLORITE VEINS MOD CPX | PLAG | MAGN comments : MAGN ID CERTAIN CPX comments : MICROLITES | PLAG comments : MICROLITES | MAGN comments : MICROLITES PYRITE | CHLORITE 61 462 A 46 5 0.0 738.00 744.00 745.30 TOKUYAMA, H. MASSIVE DOLERITE SILLSAME MINERAL CONSTITUENTS AS SECTIONS 46-1 AND 46-4 PCE 1 (1-41), 2 (45-65), 3 (70-83), 4 (90-97), 5 (100-120), 6 (122-130) MICROPHYRIC, GRAIN SIZE DECREASES DOWNWARD FROM SLIGHTLY COARSE TO FINE-GRAINED | CHILLED MARGIN IS NOT FOUND IN PCE 6 MASSIVE DOLERITE SILL, VEINS OF PYRITE+CHLORITE | PCE 6 MAY BE NEAR A CONTACT WITH SEDIMENT MOD SAME UNIT AS 46-4 CPX comments : MICROPHENOS PYRITE | CHLORITE 61 462 A 47 1 0.0 747.00 747.00 748.50 ROBINSON, P. T. CPX MOD PHYRIC BASALTSLIGHTLY PCE 1 (0-2), 2 (4-11), 3 (15-20), 4 (24-30), 5 (32-39), 6 (41-45), 7 (46-65), 8 (66-92), 9 (94-99), 10 (101-105), 11 (107-112), 12 (115-149) MOD PHYRIC, GLASSY MARGINS ARE UP TO 13MM THICK AND VERY ABUNDANT, TEXTURES OF THE INTERIOR CRYSTALLINE PORTION IS SPOTTED AND HETEROGENEOUS ABUNDANT VEINS AND CRACKS ARE FILLED WITH PYRITE+ CHLORITE+CLAY comments: SOME CLAY ALTERATION IS VISIBLE AS SPOTS OR CUT SURFACES CPX 3-4 0.2-0.4 ZEOLITE comments : ZEOLITES (PHILLIPSITE) ARE PREFERENTIALLY ASSOCIATED WITH GLASS, GNDMASS VARIES FROM GLASSY+ VARIOLITIC+EQUIGRANULAR CLAY 61 462 A 47 2 0.0 747.00 748.50 749.92 ROBINSON, P. T. CPX MOD PHYRIC BASALTSAME AS PREVIOUS SECTION PCE 1 (2-30), 2 (34-42), 3 (45-131), 4 (135-142) MOD PHYRIC, GNDMASS VARIES FROM GLASSY TO VARIOLITIC TO EQUIGRANULAR, GLASSY MARGINS ARE UP TO 13MM THICK BUT ARE LESS ABUNDANT THAN SECTION 47-2, TEXTURES OF THE INTERIOR CRYSTALLINE PORTION IS SPOTTED AND HETEROGENEOUS, FROM 45 TO 114CM GRAIN SIZE INCREASES, PCE 4 IS FINER-GRAINED THAN ABOVE ABUNDANT VEINS FILLED WITH PYRITE+CHLORITE+CLAY SLIGHTLY SOME CLAY ALTERATION IS VISIBLE AS SPOTS ON CUT SURFACES CPX 3-4 0.2-0.4 PYRITE | CHLORITE | CLAY.MIN | ZEOLITES comments : PHILLIPSITE, ZEOLITES ARE PREFERENTIALLY ASSOCIATED WITH GLASS 61 462 A 47 3 0.0 747.00 750.00 751.49 ROBINSON, P. T. CPX MOD PHYRIC BASALTSAME TEXTURE AND ALTERATION AND GENERAL ASPECT AS PREVIOUS TWO SECTIONS PCE 1 (0-5), 2 (5-10), 3 (11-37), 4 (40-70), 5 (75-88), 6 (91-99), 7 (101-122), 8 (124-149) MOD PHYRIC, GLASSY MARGINS ARE TO 13MM THICK, TEXTURES OF THE INTERIOR CRYSTALLINE PORTION IS SPOTTED AND HETEROGENEOUS, FROM 77 TO 100CM BASALT BECOMES MORE COARSE-GRAINED, FROM 100 TO 120CM GRAIN SIZE DECREASES VEINS FILLED WITH PYRITE+CHLORITE+CLAY SLIGHTLY SOME CLAY ALTERATION IS VISIBLE AS SPOTS ON CUT SURFACES CPX 3-4 0.2-0.4 comments : GLASSY TO VARIOLITIC TO EQUIGRANULAR PYRITE | CHLORITE | CLAY.MIN | ZEOLITES comments : PHILLIPSITE, ZEOLITES ARE PREFERENTIALLY ASSOCIATED WITH GLASS, ZEOLITE FRAGMENTS OCCUR AT 5-10CM (PCE 2) 61 462 A 48 1 0.0 756.00 756.00 756.14 SHCHEKA, S. A. PLAG-CPX SLIGHTLY PHYRIC BASALTPILLOW BASALT PCE 1A (0-6), 1B (7-14) SLIGHTLY PHYRIC, GLASSY RIM NEAR THE BOTTOM OF THE UNIT PILLOW BASALT WITH PYRITE+CHLORITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS FRESH TO EXT PCE 1A IS EXT ALTERED AND PCE 1B IS FRESH UNIT 1 comments : VESICULAR CPX PYRITE | CHLORITE | ZEOLITE 61 462 A 48 1 17.0 756.00 756.17 756.67 SHCHEKA, S. A. PILLOW BASALT PCE 2A (12-25), 2B (25-30), 2C (30-35), 2D (35-43), PCE 2E (42-66) FROM 17 TO 27CM BASALT IS APHANITIC AND FROM 27 TO 64CM BASALT IS APHANITIC WITH GLASSY SPOTS, FROM 44 TO 58CM BASALT IS MORE COARSE-GRAINED AND WITHOUT SPOTS, INTERVAL (58-67) IS APHANITIC WITH A LOWER LOWER GLASSY MARGIN PILLOW BASALT WITH PYRITE+CHLORITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS EXT UNIT 2 comments : INTERVAL (17-27) IS VESICULAR PYRITE | CHLORITE | ZEOLITE 61 462 A 48 1 68.0 756.00 756.68 757.16 SHCHEKA, S. A. PILLOW BASALT PCE 3A (68-97), 3B (97-105), 3C (105-116) INTERVALS (79-85) AND (114-116) ARE APHANITIC, INTERVAL (85-114) IS MORE COARSE-GRAINED PILLOW BASALT WITH PYRITE+CHLORITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS FRESH TO ALMOST COMPLETELY NTERVAL (75-95) IS ALMOST COMPLETELY ALTERED UNIT 3, INTERVAL (68-79) WAS NOT DESCRIBED PYRITE | CHLORITE | ZEOLITE 61 462 A 48 1 123.0 756.00 757.23 757.50 SHCHEKA, S. A. PILLOW BASALT PCE 4A (125-131), 4B (130-140), 4C (140-147), 4D (147-150) BASALT IS APHANITIC NEAR THE TOP (16CM) AND BOTTOM (2CM), COARSE-GRAINED NEAR THE MIDDLE PILLOW BASALT WITH PYRITE+CHLORITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS FRESH UNIT 4 PYRITE | CHLORITE | ZEOLITE 61 462 A 48 2 0.0 756.00 757.50 759.00 SHCHEKA, S. A. PILLOW BASALTSAME BASALTS AS ABOVE SECTION PCE 1A (0-5), 1B (6-15), 1C (15-25), 1D (25-31), 1E (32-37), 1F (38-46), 2A (51-56), 2B (56-65), 2C (65-75), 2D (75-80), 2E (81-90), 2F (90-100), 2G (101-105), 3A (107-115), 3B (115-125), 3C (125-140), 3D (145-150) GLASSY MARGINS WITH 4 BASALT UNITS, INTERVAL(125-150 IS MEDIUM-GRAINED CALCITE+PYRITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS 3 BASALT UNITS, UNIT 1 OCCURS FROM 0-49CM, UNIT 2 OCCURS FROM 50-104CM, UNIT 3 OCCURS FROM 116-150CM CALCITE RARE | CHLORITE | CLAY.MIN | ZEOLITE comments : TRANSPARENT AND WHITE 61 462 A 48 3 0.0 756.00 759.00 760.49 SHCHEKA, S. A. PILLOW BASALTSAME PILLOW BASALT AS ABOVE SECTION PCE 1A (0-25), 1B (26-29), 2A (31-40), 2B (40-50), 2C (50-56), 2D (56-63), 2E (63-74), 2F (73-79), 3A (81-85), 3B (86-97), 3C (97-109), 3D (106-115), 4A (118-125), 4B (125-130), 4C (131-140), 4D (140-149) 3 BASALT UNITS WITH GLASSY MARGINS, INTERVAL (115-117) IS APHANITIC PILLOW BASALT WITH CALCITE+CHLORITE+CLAY VEINS PLUS TRANSPARENT AND WHITE ZEOLITE VEINS, INTERVAL (135-137) VEINS OF DRUSE OF FIBROUS-RADIATING ZEOLITE ARE PRESENT EXT PCES 1A+2A+2B+2D+3B+4A-4D 3 BASALT UNITS, INTERVAL (0-30) IS THE SAME UNIT (4) AS THE PREVIOUS SECTION (48-2), UNIT 1 INTERVAL (30-80), UNIT 2 INTERVAL (80-118), UNIT 3 INTERVAL (118-150) CALCITE RARE | CHLORITE | CLAY.MIN | ZEOLITE comments : TRANSPARENT AND WHITE 61 462 A 48 4 0.0 756.00 760.50 762.00 SHCHEKA, S. A. PILLOW BASALTSAME PILLOW BASALT AS ABOVE SECTION PCE 1A (0-10), 2A (11-18), 2B (18-26), 2C (26-39), 2D (40-56), 2E (56-70), 2F (70-75), 3A (76-96), 3B (96-100), 3C (100-110), 4A (110-121), 4B (121-126), 4C (126-135), 4D (135-150) SLIGHTLY PHYRIC, 3 NEW BASALT UNITS WITH GLASSY MARGINS PILLOW BASALT, CALCITE(RARE)+CHLORITE+CLAY VEINS, INTERVAL (101-102) THICK VEIN OF FIBROUS-RADIATED PINK ZEOLITE WITH CUBIC PYRITE comments: PCES 2A-2D+3A+4A ARE ALTERED INTERVAL (0-10) IS BOTTOM OF PREVIOUS UNIT FROM SECTION 48-4, 4 NEW BASALT UNITS, UNIT 1 INTERVAL (10-74), UNIT 2 INTERVAL (76-109), UNIT 3 INTERVAL (111-150) CALCITE RARE | CHLORITE | CLAY.MIN | ZEOLITE comments : TRANSPARENT AND WHITE, ALSO FIBROUS RADIATED PINK | PYRITE comments : CUBIC 61 462 A 48 5 0.0 756.00 762.00 763.10 SHCHEKA, S. A. PILLOW BASALTSIMILAR TO ABOVE SECTIONS PCE 1A (0-14), 1B (15-20), 1C (20-26), 1D (27-35), 1E (35-42), 1F (43-52), 2 (61-71), 3 (73-79), 4 (80-86), 5 (88-95), 6 (96-99), 7 (99-100), 8 (101-105), 9 (107-110) SLIGHTLY PHYRIC, INTERVAL (60-110) (CORE CATCHER) IS APHANITIC WITH GLASSY PILLOW AND FINE-GRAINED PILLOW BASALT WITH CALCITE(RARE)+CHLORITE+CLAY VEINS AND ZEOLITE VEINS INTERVAL (0-60) IS THE BOTTOM OF THE UNIT FROM THE PREVIOUS SECTION (48-4), PCES IN INTERVAL (60-110) (CORE CATCHER) DO NOT HAVE KNOWN ORIENTATIONS CALCITE RARE | CHLORITE | CLAY.MIN | ZEOLITE 61 462 A 49 1 0.0 765.00 765.00 766.49 TOKUYAMA, H. APHYRIC TO CPX-PLAG MICROPHYRIC BASALT PCE 1 (0-5), 2 (5-10), 3 (11-18), 4 (20-26), 5 (29-34), 6 (36-41), 7 (45-54), 8A (55-60), 8B (60-65), 8C (65-75), 8D (75-89), 8E (89-95), 8F (95-104), 8G (103-110), 8H (109-120) 8I (122-149) APHYRIC TO MICROPHYRIC, HYALOPILITIC-ESPECIALLY LOWER PART OF PCE 7, AT INTERVAL (56-58) IS A MEDIUM LIGHT GRAY (N6) CHILLED MARGIN, INTERVAL (56-68) IS FINE-GRAINED, INTERVAL (68-103) IS FINE- GRAINED, INTERVAL (103-150) IS MEDIUM-GRAINED AND INTERSERTAL TO INTERGRANULAR VEINS FILLED WITH CHLORITE+PYRITE SLIGHTLY PCES 1-7 WERE NEAR CONTACT WITH SEDIMENT OR LOWER IGNEOUS ROCK, AT INTERVAL (56-68) BASALT IS MEDIUM LIGHT GRAY (N6), AT INTERVAL (68-150) BASALT COLOR IS MEDIUM DARK GRAY (N4) PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, AT INTERVAL (0-54) CPX>PLAG INABUNDANCE, AT INTERVAL (68-103) PLAG>CPX INABUNDANCE CHLORITE | PYRITE 61 462 A 49 2 0.0 765.00 766.50 767.91 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-17), 1B (16-30), 1C (31-40), 1D (40-48), 2 (50-62), 3 (64-73), 4 (75-82), 5A (84-102), 5B (104-120), 6 (127-140) SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERSERTAL TO INTERGRANULAR MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+PYRITE SLIGHTLY SAME UNIT AS IN THE LOWER PART OF SECTION 49-1 PLAG comments : MICROPHENOS | CPX comments : MICROPHENOS, AT INTERVAL (0-74) CPX ABOUT EQUAL TOPLAG IN ABUNDANCE, AT INTERVAL (74-141) PLAG>CPXIN ABUNDANCE 61 462 A 49 3 0.0 765.00 768.00 769.42 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (2-20), 2A (22-27), 2B (28-40), 3 (40-55), 4 (55-79), 5A (80-95), 5B (95-119), 6 (124-140) DOLERITE, SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERGRANULAR TO INTERSERTAL MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+PYRITE SLIGHTLY SAME UNIT AS IN SECTIONS 49-1 AND 49-2 CHLORITE | PYRITE 61 462 A 49 4 0.0 765.00 769.50 770.10 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (2-20), 2A (24-37), 2B (37-47), 3 (51-58) DOLERITE, SLIGHTLY MEDIUM TO MEDIUM-GRAINED, INTERSERTAL TO INTERGRANULAR MASSIVE DOLERITE SILL SLIGHTLY SEE SECTION 49-1 SAME UNIT AS SECTION 49-4 61 462 A 50 1 0.0 774.00 774.00 775.19 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-12), 1B (12-29), 1C (26-60), 1D (58-85), 1E (81-94), 1F (95-112) HOMOGENEOUS MEDIUM-GRAINED, SUBOPHITIC TO INTERGRANULAR MASSIVE DOLERITE SILL SLIGHTLY SAME UNIT AS CORE 49 PLAG 0.8 | CPX comments : MICROPHENOS, EQUAL AMOUNT TO PLAG, OFTEN FORMINGAGGREGATES PLAG | CPX | MAGN comments : MICROLITES CHLORITE CPX comments : SPOTTED DISTRIBUTION 61 462 A 50 2 0.0 774.00 775.50 776.78 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-50), 1B (50-64), 1C (64-125) INTERVAL (0-35) IS MEDIUM TO SLIGHTLY COARSE- GRAINED, REMAINS SLIGHTLY COARSE-GRAINED TO 150CM WITH THE EXCEPTION OF GRANOPHYRIC SCHLIEREN AT 101-102CM AND 119-121CM, MEDIUM-GRAINED BASALT IS SUBOPHITIC TO INTERGRANULAR, THE SLIGHTLY COARSE- GRAINED BASALT IS SUBOPHITIC, MICROPHENOS IN THE SLIGHTLY COARSE-GRAINED BASALT ARE MORE FREQUENTLY ABSORBED THAN IN THE MEDIUM-GRAINED BASALT, THE GRANOPHYRE LAYERS ARE MADE OF PHENOS OF PLAG AND CPX AND MAGN PLUS A SMALL AMOUNT OF MICROPEGMATITE MASSIVE DOLERITE SILL PLAG 1.5 | CPX | MAGN comments : MICROPHENOS CHLORITE CPX comments : SPOTTY DISTRIBUTION 61 462 A 50 3 0.0 774.00 777.00 778.50 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-36), 1B (36-47), 1C (47-110), 1D (110-127), 1E (128-150) COARSE-GRAINED, SUBOPHITIC TO OPHITIC MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+ZEOLITE(PHILLIPSITE)+PYRITE, GRANOPHYRE SCHLIEREN OCCURS AT 14 TO 18CM (2 TO 3MM PHENOS) AND 47 TO 53CM (2 TO 3MM PHENOS) AND 124 TO 133CM (5MM PHENOS) MOD SAME UNIT AS SECTION 50-2 PLAG comments : MICROPHENOS, 2 TO 3MM AT INTERVALS (14-18) AND(47-53), 5MM AT INTERVAL (124-133) CHLORITE | ZEOLITE comments : PHILLIPSITE | PYRITE 61 462 A 50 4 0.0 774.00 778.50 779.99 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-15), 1B (15-27), 1C (27-66), 1D (67-81), 1E (82-105), 1F (105-149) GRAIN SIZE DECREASES DOWNWARD FROM COARSE TO SLIGHTLY COARSE, SUBOPHITIC TO INTERSERTAL, (SEE SECTION 50-4) MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+ZEOLITE(PHILLIPSITE) AND PYRITE MOD SAME UNIT AS SECTION 50-3 CHLORITE | ZEOLITE comments : PHILLIPSITE | PYRITE 61 462 A 50 5 0.0 774.00 780.00 781.41 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-18), 1B (19-39), 1C (39-47), 1D (47-55), 1E (55-71), 1F (72-76), 1G (76-85), 1H (87-100), 1I (100-108), 1J (107-117), 1K (117-125), 1L (125-130), 1M (130-141) GRAIN SIZE DECREASING SLIGHTLY FROM SLIGHTLY COARSE TO MEDIUM, INTERGRANULAR TO INTERSERTAL (SEE 50-2) MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+ZEOLITE(PHILLIPSITE)+PYRITE SLIGHTLY SAME UNIT AS SECTION 50-4 CHLORITE | ZEOLITE comments : PHILLIPSITE | PYRITE 61 462 A 50 6 0.0 774.00 781.50 782.98 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (1-10), 1B (12-20), 1C (21-30), 1D (30-35), 1E (35-50), 1F (50-62), 1G (62-70), 1H (70-76), 1I (77-90), 1J (91-99), 1K (100-120), 1L (120-130), 1M (131-148) HOMOGENEOUSLY MEDIUM-GRAINED, INTERGRANULAR TO INTERSERTAL (SEE 50-1) MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE+ZEOLITE(PHILLIPSITE)+PYRITE SLIGHTLY SAME UNIT AS SECTION 50-5 61 462 A 51 1 0.0 778.50 778.50 779.96 SHCHEKA, S. A. MICRODOLERITESMASSIVE BASALT SILL PCE 1A (0-6), 1B (5-15), 1C (15-22), 1D (22-32), 1E (33-35), 1F (35-56), 1G (57-62), 1H (62-66), 1I (67-71), 1J (71-96), 1K (96-100), 1L (105-115), 1M (115-129), 1N (129-145) HOMOGENEOUSLY MEDIUM-GRAINED MICRODOLERITE, NO VISIBLE VARIATION OF GRAIN SIZE MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH PYRITE+ CHLORITE+CLAY FRESH GNDMASS IS VERY FRESH EXCEPT SMALL DISSEMINATED PALE GREEN CLAY PSEUDOMORPHS AFTER OL(?) PLAG | CPX | MAGN | OL comments : ID UNCERTAIN CHLORITE | CLAY.MIN OL comments : DISSEMINATED PALE GREEN CLAY PSEUDOMORPHS AFTER OL? | ZEOLITE 61 462 A 51 2 0.0 778.50 780.00 781.50 SHCHEKA, S. A. MICRODOLERITESMASSIVE BASALT SILLSAME MICRODOLERITE AS SECTION 51-1 PCE 1A (0-12), 1B (12-20), 1C (20-23), 1D (23-30), 1E (30-35), 1F (36-44), 1G (44-51), 1H (42-61), 1I (62-75), 1J (75-85), 1K (85-94), 1L (94-98), 1M (98-106), 1N (107-115), 1O (116-150) HOMOGENEOUSLY MEDIUM-GRAINED MICRODOLERITE MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH PYRITE+ CHLORITE+CLAY SLIGHTLY GNDMASS IS VERY FRESH EXCEPT SMALL DISSEMINATED PALE GREEN CLAY PSEUDOMORPHS AFTER OL(?) PLAG | CPX | MAGN | OL comments : ID UNCERTAIN PYRITE | CHLORITE | CLAY.MIN OL comments : PALE GREEN CLAY PSEUDOMORPHS | ZEOLITE 61 462 A 51 3 0.0 778.50 781.50 782.03 SHCHEKA, S. A. MICRODOLERITESSAME MICRODOLERITE AS SECTION 51-2 PCE 1A (0-16), 1B (16-21), 1C (22-30), 1D (30-53) APHYRIC, MEDIUM-GRAINED VEINS FILLED WITH PYRITE+CHLORITE+CLAY+ZEOLITE SLIGHTLY PLAG | CPX | MAGN | OL comments : ID UNCERTAIN PYRITE | CHLORITE | CLAY.MIN OL comments : PALE GREEN CLAY PSEUDOMORPHS | ZEOLITE 61 462 A 51 3 53.0 778.50 782.03 783.00 SHCHEKA, S. A. MICRODOLERITE PCE 1E (53-60), 1F (61-75), 1G (75-90), 1H (90-100), 1I (100-110), 1J (110-121), 1K (121-150) GRADUALLY MORE FINE-GRAINED THAN ABOVE, AT (140-148) A ROUNDED APHANITIC SEPARATION APPEARS TO BE DUE TO LOCAL QUENCH NEAR BOTTOM OF SILL VEINS FILLED WITH PYRITE+CHLORITE+CLAY+ZEOLITE SLIGHTLY PYRITE | CHLORITE | CLAY.MIN | ZEOLITE 61 462 A 51 4 0.0 778.50 783.00 783.23 SHCHEKA, S. A. BASALT SILL PCE 1A (0-6), 1B (6-11), 1C (11-17), 1D (17-23) FINE-GRAINED TO APHANITIC BOTTOM OF SILL, VEINS FILLED WITH PYRITE+CHLORITE+ CLAY+ZEOLITE SLIGHTLY 61 462 A 51 4 23.0 778.50 783.23 783.30 SHCHEKA, S. A. BASALTIC GLASS PCE 1E (23-30) COARSE PCE OF DARK-BROWN GLASS CUT BY ZEOLITE VEINS SLIGHTLY ALTERED AROUND OUTER SURFACE TO CHLORITE+HEMATITE+ CLAY DARK BROWN CHLORITE | HEMATITE | CLAY.MIN | ZEOLITE 61 462 A 51 4 30.0 778.50 783.30 783.95 SHCHEKA, S. A. APHANITIC BASALT TO MICRODOLERITES PCE 2 (32-94) APHANITIC BASALT WITH GLASSY MARGINS AND FINE- GRAINED TO MEDIUM-GRAINED MICRODOLERITES SLIGHTLY SMALL PCES FROM CORE CATCHER 61 462 A 52 1 0.0 787.50 787.50 788.96 ROBINSON, P. T. DOLERITE PCE 1 (1-139) A FEW (<1%) CPX PHENOS (0.5MM) IN A VERY HOMOGENEOUS DIABASE, MINOR GRAIN SIZE VARIATION IS APPARENT VEINS OF GREEN CLAY (84-37)+QTZ (105-112)+PYRITE SLIGHTLY THERE ARE A FEW PATCHES OF BROWN CLAY CLEARLY ONE UNIT CPX <1 0.5 CLAY comments : GREEN AND BROWN CLAY | PYRITE 61 462 A 52 2 0.0 787.50 789.00 790.48 ROBINSON, P. T. DOLERITE PCE 1 (0-148) HOMOGENEOUS COARSE-GRAINED DOLERITE, NO VISIBLE CLAY PATCHES AS IN SECTION 52-1 GREEN CLAY VEINS ARE COMMON CLAY.MIN comments : GREEN CLAY FILLING VEINS 61 462 A 52 3 0.0 787.50 790.50 791.71 ROBINSON, P. T. DOLERITESIMILAR TO THAT DESIRED ABOVE PCE 1 (0-65), 2 (67-72), 3 (75-85), 4 (87-100), 5 (101-106), 6 (110-128) FINE-GRAINED, GRAIN SIZE DECREASES DOWNWARD comments: SAME ALTERATION AS PREVIOUS SECTION GREY MATRIX 1-2 0.2-0.5 comments : MAFIC PHENOS CLAY.MIN comments : GREEN CLAY FILLING VEINS 61 462 A 52 4 0.0 787.50 792.00 792.51 ROBINSON, P. T. FINE-GRAINED BASALTSIMILAR TO THE BOTTOM OF 52-3 PCE 1 (1-41), 2 (44-50) FINE-GRAINED, PCE 2 (43-52) HAS A THIN (49-50) PCE OF GLASS IN CONTACT WITH FINE-GRAINED BASALT NEAR THE BOTTOM OF PCE 2 SLIGHTLY ONLY PCE 2 IS ORIENTED, ALL OTHER PCES ARE UNORIENTED AND OUT OF STRATIGRAPHIC ORDER 61 462 A 53 1 0.0 792.00 792.00 793.50 TOKUYAMA, H. CPX-PLAG MICROPHYRIC BASALTMASSIVE BASALT PCE 1A (0-16), 1B (16-22), 1C (21-31), 1D (32-41), 1E (42-50), 2 (54-60), 3 (62-73), 4A (76-85), 4B (85-100), 5 (101-104), 6 (114-125), 7A (129-140), 7B (140-150) MICROPHYRIC, UNIT 1 (PCES 1A-2) IS FINE-GRAINED, THIN (1CM) GLASSY MARGINS AT THE TOP AND BOTTOM OF THE UNIT, GRAIN SIZE INCREASES IN INTERVAL (1-25) TO A FINE-GRAIN SIZE AND DECREASES IN INTERVAL (25-59), APHYRIC TO HYALOPILITIC, IN UNIT 2 (PCES 3-7B) BASALT IS FINE-GRAINED WITH THIN (2CM) UPPER GLASSY MARGIN, GRAIN SIZE INCREASES DOWNWARD FROM 62CM MASSIVE BASALT, VEINS FILLED WITH CHLORITE+PYRITE SLIGHTLY UNIT 1 (0-60) AND UNIT 2 (61-150) CPX comments : MICROPHENOS | PLAG comments : MICROPHENOS CPX | PLAG 61 462 A 53 2 0.0 792.00 793.50 794.95 TOKUYAMA, H. BASALT SILL PCE 1 (1-18), 2A (23-34), 2B (34-45), 3A (50-57), 3B (57-66), 3C (67-72), 3D (73-84), 3E (84-105), 3F (105-111), 3G (112-120), 3H (120-128), 3I (129-137), 3J (136-145) PCES 1-3F ARE HYALOPILITIC, PCES 3G-3J ARE INTERSERTAL, GRAIN SIZE INCREASES DOWNWARD FROM FINE TO SLIGHTLY MEDIUM BASALT SILL, VEINS ARE FILLED WITH CHLORITE+ZEOLITE+ PYRITE SLIGHTLY SAME UNIT AS LOWER ONE IN SECTION 53-1 CHLORITE | ZEOLITE | PYRITE comments : FILLING VEINS 61 462 A 54 1 0.0 797.50 797.50 798.99 TOKUYAMA, H. OL-CPX-PLAG MICROPHYRIC BASALTMASSIVE PILLOW BASALT PCE 1 (1-5), 2A (8-20), 2B (23-25), 3 (30-40), 4 (42-47), 5A (50-60), 5B (60-65), 6 (69-78), 7A (83-90), 7B (90-100), 7C (100-105), 8A (112-115), 8B (117-120), 8C (120-130), 8D (130-140), 8E (140-149) MICROPHYRIC, GLASSY UNITS BETWEEN UNITS ARE 1-2CM, INNER PART OF EACH UNIT IS SLIGHTLY MEDIUM TO FINE- GRAINED (APHANITIC), UNIT 1 IS WITHOUT AN UPPER PART AND ONLY HAS A LOWER CHILLED MARGIN, UNITS 2-4 HAVE LOWER AND UPPER GLASSY MARGINS, UNIT 5 ONLY HAS A GLASSY UPPER MARGIN PILLOW BASALT SLIGHTLY UNIT 1 IS INTERVAL (0-20), UNIT 2 IS INTERVAL (20-58), UNIT 3 IS INTERVAL (58-90), UNIT 4 IS INTERVAL (90-120), UNIT 5 IS INTERVAL (120-NEXT SECTION) OL | CPX | PLAG CPX | PLAG | MAGN comments : GLASS IN GNDMASS 61 462 A 54 2 0.0 797.50 799.00 800.30 TOKUYAMA, H. MASSIVE PILLOW BASALTCONTINUED FROM 54-1 PCE 1A (0-17), 1B (18-32), 1C (29-42), 1D (42-51), 2 (55-65), 3A (67-76), 3B (77-84), 3C (84-93), 3D (92-97), 3E (100-110), 3F (110-119), 3G (119-127) MICROPHYRIC, INNER PART OF EACH UNIT IS SLIGHTLY MEDIUM TO FINE-GRAINED, NO DISTINCT GLASSY MARGINS PILLOW BASALT, VEINS OF ZEOLITE(PHILLIPSITE?)+ CHLORITE, MASSIVE SLIGHTLY UNIT 5 IS INTERVAL (0-66) AND IS CONTINUED FROM BASALT UNIT OF SECTION 54-1, UNIT 6 IS INTERVAL (66-120?) OL | CPX | PLAG CPX | PLAG | MAGN comments : GLASS IN GNDMASS CHLORITE | ZEOLITE comments : POSSIBLY PHILLIPSITE 61 462 A 55 1 0.0 801.00 801.00 802.50 SHCHEKA, S. A. MICRODOLERITES PCE 1A (0-5), 1B (5-15), 2 (17-30), 3 (33-42), 4 (45-55), 5 (57-64), 6 (70-75), 7A (78-86), 7B (87-92), 8A (95-103), 8B (103-112), 8C (112-120), 9 (122-130), 10 (132-137), 11 (141-149) TWO UNITS OF MICRODOLERITES DIVIDED BY GLASSY MARGINS, TEXTURE NEAR THE GLASSY MARGINS ARE MICRO- EQUIGRANULAR-WHICH GRADES TO MICRODOLERITES IN THE INTERIOR OF THE UNITS VEINS ARE FILLED WITH ZEOLITE DRUSES AND PYRITE+ CHLORITE+CLAY AND CALCITE+CLAY SLIGHTLY UNIT 1 IS INTERVAL (0-30), UNIT 2 IS INTERVAL (30-93), UNIT 3 IS INTERVAL (93-130), UNIT 4 IS INTERVAL (130-150) comments : VESICULAR NEAR THE GLASSY MARGINS OL | PLAG PLAG | CPX comments : GLASS IN GNDMASS | MAGN | PYX CLAY.MIN OL | ZEOLITE | CHLORITE | CALCITE 61 462 A 55 2 0.0 801.00 802.50 803.55 SHCHEKA, S. A. MICRODOLERITESSAME MICRODOLERITES AS IN SECTION 55-1 PCE 1 (0-10), 2 (11-20), 3 (24-32), 4 (37-60), 5 (65-75), 6 (77-90), 7 (91-101) UNIT 1 DOLERITES ARE THE SAME AS IN SECTION 55-1, IN UNIT 2 SOME SMALL PCES WITH GLASSY MARGINS, IN UNIT MEDIUM-GRAINED-SLIGHTLY PHYRIC MICRODOLERITES SIMILA TO THOSE FROM THE INTERIOR OF SILLS VEINS ARE PYRITE+CHLORITE+CLAY SLIGHTLY UNIT 1 IS INTERVAL (0-35), UNIT 2 IS INTERVAL (35-62), UNIT 3 (62-104) OL | PLAG PLAG | CPX comments : GLASS IN GNDMASS | MAGN | PYX CLAY.MIN OL | PYRITE | CHLORITE 61 462 A 56 1 0.0 806.50 806.50 808.00 SHCHEKA, S. A. MICRODOLERITEMINERAL COMPOSITION AND TEXTURE AND ALTERATION SAME AS IN ABOVE SECTIONS 55-1+2 PCE 1 (1-4), 2 (6-10), 3 (12-27), 4A (30-35), 4B (35-45), 4C (45-55), 4D (55-43), 4E (63-72), 4F (72-95), 4G (95-112), 4H (112-126), 4I (125-135), 4J (135-145), 4K (145-150) GRAIN SIZE GRADUALLY CHANGES FROM APHANITIC MICRODOLERITE OR BASALT (AT 0CM) TO MEDIUM-GRAINED DOLERITE (AT 75CM) AND GRADUALLY BACK TO APHANITIC (TO 150CM) MICRODOLERITE OR BASALT VEINS FILLED WITH PYRITE+CHLORITE+CLAY SLIGHTLY PYRITE | CHLORITE | CLAY 61 462 A 56 2 0.0 806.50 808.00 809.50 SHCHEKA, S. A. PILLOW BASALT PCE 1 (0-5), 2 (8-12), 3 (17-22), 4 (25-30), 5 (32-38), 6A (42-50), 6B (50-57), 6C (58-65), 6D (65-71), 7 (75-80), 8 (83-90), 9 (94-100), 10 (100-110), 11 (112-120), 12 (124-130), 13 (131-140), 14 (143-150) IN (0-25) AND (72-150) GLASSY ZONES ARE 1-2CM THICK, IN INTERVAL (25-72) FINE-GRAINED BASALT GRADES DOWNWARD TO MICRODOLERITE (50CM) AND BACK TO FINE-GRAINED BASALT (72CM) INTERVALS (0-25) AND (72-150) SMALL PCES OF ALTERED PILLOWED BASALTS, ELONGATION OF GLASSY PILLOW BOTH SUB-HORIZONTALLY AND SUB-VERTICALLY | FROM 92 TO 98CM OCCURS A THICK VEIN IN THE GLASSY MARGIN-THE VEIN IS COARSE FAN-SHAPED AND XTLN AND FILLED WITH TRANSPARENT ZEOLITE SLIGHTLY THERE ARE 4 COOLING UNITS AT (0-25) AND (25-80) AND (80-150?) PYRITE | CHLORITE | CLAY | ZEOLITE comments : TRANSPARENT 61 462 A 56 3 0.0 806.50 809.50 810.53 SHCHEKA, S. A. APHYRIC BASALTDOLERITE PCE 1 (0-5), 2 (7-101) APHYRIC, FRAGMENTS OF PILLOWED BASALTS AND FINE- GRAINED MICRODOLERITES PILLOWED BASALT FRAGMENTS SLIGHTLY STRATIGRAPHIC POSITION OF PCES UNKNOWN OPAL comments : COARSE VUGS ARE FILLED WITH OPAL OPAL 61 462 A 57 1 0.0 815.50 815.50 815.57 TOKUYAMA, H. PILLOW BASALT PCE 1 (1-7) LOWER MARGIN OF PILLOW LAVA, GLASSY AT 5-7CM PILLOW BASALT WITH CRACKS AND VEINS OF PYRITE+ CHLORITE+CLAY AND ZEOLITE SLIGHTLY PYRITE | CLAY.MIN | CHLORITE | ZEOLITE 61 462 A 57 1 8.0 815.50 815.58 816.01 TOKUYAMA, H. BASALT PCE 2 (8-17), 3 (20-27), 4 (29-40), 5 (43-51) WITHOUT LOWER GLASSY MARGIN PILLOW BASALT WITH CRACKS AND VEINS OF PYRITE+ CHLORITE+CLAY AND ZEOLITE SLIGHTLY SINGLE UNIT PYRITE | CLAY.MIN | CHLORITE | ZEOLITE 61 462 A 57 1 52.0 815.50 816.02 816.11 TOKUYAMA, H. APHYRIC TO HYALOPILITIC BASALT PCE 6 (52-61) APHYRIC TO HYALOPILITIC, FROM 52 TO 54CM IS THE UPPE GLASSY MARGIN WHICH IS APHYRIC TO HYALOPILITIC, THE CORE OF THE UNIT IS APHANITIC TO INTERSERTAL WITH PLAG AND CPX MICROPHENOS PILLOW BASALT WITH CRACKS OR VEINS FILLED WITH PYRITE+CHLORITE+CLAY AND ZEOLITE SLIGHTLY PYRITE | CLAY.MIN | CHLORITE | ZEOLITE 61 462 A 57 1 62.0 815.50 816.12 816.99 TOKUYAMA, H. PILLOW BASALT PCE 7 (62-68), 9 (91-100), 11 (119-126), 13 (144-149) PILLOW BASALT WITH CRACKS OR VEINS FILLED WITH PYRITE+CLAY+CHLORITE AND ZEOLITE SLIGHTLY INNER PART OF PILLOW LAVA PYRITE | CLAY.MIN | CHLORITE | ZEOLITE 61 462 A 57 1 71.0 815.50 816.21 816.90 TOKUYAMA, H. PLAG-CPX MICROPHYRIC BASALT PCE 8 (71-90), 10 (104-116), 12 (128-140) MICROPHYRIC, ALMOST FINE-GRAINED TO SLIGHTLY MEDIUM- GRAINED, SMALL CRUSHED PARTICLES PILLOW BASALT WITH CRACKS OR VEINS FILLED WITH PYRITE+CLAY+CHLORITE AND ZEOLITE SLIGHTLY PLAG | CPX comments : MICROPHENOS ZEOLITE | CHLORITE | CLAY.MIN | PYRITE 61 462 A 58 1 0.0 824.50 824.50 824.54 TOKUYAMA, H. BASALT PCE 1 (1-4) BASALT CAVITY FILLED WITH ZEOLITE (ANALCITE?) SLIGHTLY ZEOLITE 1-2 comments : AVERAGE 1-2MM LONG WITH A MAXIMUM OF 5MM, POSSIBLY ANALCITE 61 462 A 58 1 4.0 824.50 824.54 825.27 TOKUYAMA, H. BASALT PCE 2 (6-18), 3A (20-30), 3B (30-47), 3C (47-62), 3D (62-77) SLIGHTLY MEDIUM-GRAINED (INTERSERTAL) BASALT WITH VEINS FILLED WITH CHLORITE+PYRITE+CLAY AND ZEOLITE SLIGHTLY ZEOLITE | CHLORITE | PYRITE | CLAY.MIN 61 462 A 58 1 77.0 824.50 825.27 825.45 TOKUYAMA, H. PLAG-CPX MICROPHYRIC BASALT PCE 3E (78-88), 4 (90-95) MICROPHYRIC, PCE 3E IS SLIGHTLY FINE-GRAINED AND HYALOPILITIC, PCE 4 IS FINE-GRAINED BASALT WITH VEINS FILLED WITH CHLORITE+PYRITE+CLAY AND ZEOLITE SLIGHTLY PLAG | CPX comments : MICROPHENOS CLAY.MIN | CHLORITE | ZEOLITE | PYRITE 61 462 A 58 1 95.0 824.50 825.45 825.56 TOKUYAMA, H. APHYRIC BASALT PCE 5 (99-106) APHYRIC, FINE-GRAINED WITH GLASSY MARGIN(2CM THICK) ZEOLITE VEIN NOTED SLIGHTLY SPOT OF ZEOLITE NOTED | SLIGHTLY ZEOLITE 61 462 A 58 1 106.0 824.50 825.56 826.00 TOKUYAMA, H. BASALT PCE 6 (109-115), 7 (117-122), 8 (125-132), 9 (135-140), 10 (145-150) PCES 6-10 EXCLUDING 7 ARE SMALL CRUSHED FINE-GRAINED PARTICLES WITH GLASSY MARGINS (1-2CM THICK) BASALT WITH VEINS OF CHLORITE+PYRITE+CLAY AND ZEOLITE, PCE 7 HAS A ZEOLITE AND FE.OXIDE VEIN SLIGHTLY DIFFERENT UNIT THAN ABOVE ZEOLITE | PYRITE | CHLORITE | CLAY.MIN | FE.OXIDE 61 462 A 58 2 0.0 824.50 826.00 826.20 TOKUYAMA, H. APHYRIC BASALT PCE 1 (1-8), 2 (10-20) APHYRIC, FINE-GRAINED, ANHEDRAL VEINS FILLED WITH ZEOLITE AND CHLORITE SLIGHTLY SAME UNIT AS LOWER UNIT OF SECTION 58-1 CPX comments : ANHEDRAL CRYSTALS ZEOLITE | PYRITE 61 462 A 58 2 20.0 824.50 826.20 827.50 TOKUYAMA, H. CPX-PLAG MICROPHYRIC BASALT PCE 3A (22-36), 3B (30-51), 4A (52-60), 4B (60-70), 4C (70-80), 4D (80-86), 5 (92-110), 6 (111-118), 7A (120-130), 7B (130-140), 7C (140-150) MICROPHYRIC, FINE TO SLIGHTLY MEDIUM-GRAINED (HYALOPILITIC TO INTERSERTAL) VEINS FILLED WITH ZEOLITE AND CHLORITE-PARTICULARLY DEVELOPING IN PCES 3B+5+7A+7B SLIGHTLY SAME UNIT AS LOWER UNIT OF SECTION 58-1 CPX | PLAG comments : MICROPHENOS CPX | PLAG | MAGN comments : PLUS GLASS, ALL MICROLITES ZEOLITE | CHLORITE 61 462 A 58 3 0.0 824.50 827.50 827.92 TOKUYAMA, H. CPX MICROPHYRIC BASALT PCE 1 (1-10), 2A (15-21), 2B (22-42) MICROPHYRIC, INTERVAL (1-35) IS SLIGHTLY FINE- GRAINED, INTERVAL (35-42) IS SLIGHTLY MEDIUM TO MEDIUM-GRAINED, APHANITIC VEINS FILLED WITH ZEOLITE+CHLORITE+PYRITE FRESH CPX comments : AMOUNT AND SIZE OF CPX MICROPHENOS IS INTERVAL(35-42) ARE LARGER THAN UPPER PART ZEOLITE | PYRITE | CHLORITE 61 462 A 58 3 42.0 824.50 827.92 828.93 TOKUYAMA, H. APHYRIC BASALT PCE 3 (45-80), 4A (82-92), 4B (91-109), 4C (110-120), 4D (120-130), 4E (130-143) APHYRIC, TOP OF PCE 3 IS FINE-GRAINED, IN PCES 3-4E GRADUALLY INCREASING GRAIN SIZE FROM FINE TO SLIGHTLY FINE, APHANITIC, IN INTERVAL (42-60) CPX MICROPHENOS VEINS ARE FILLED WITH ZEOLITE+PYRITE+CHLORITE SLIGHTLY CPX comments : CPX PHENOS IN INTERVAL (42-60) ZEOLITE | PYRITE | CHLORITE 61 462 A 58 4 0.0 824.50 829.00 830.50 TOKUYAMA, H. CPX MOD PHYRIC BASALT PCE 1A (1-29), 1B (30-37), 2A (41-55), 2B (54-65), 3 (67-77), 4 (80-83), 7 (106-125), 8A (128-138), 8B (140-150) MOD PHYRIC, FINE-GRAINED, APHANITIC VEINS ARE FILLED WITH ZEOLITE+CHLORITE+PYRITE FRESH TO SLIGHTLY CPX PYRITE | CHLORITE | ZEOLITE 61 462 A 58 4 0.0 824.50 829.00 830.50 TOKUYAMA, H. CPX SLIGHTLY MICROPHYRIC BASALT PCE 5 (86-94), 6 (95-104) SLIGHTLY MICROPHYRIC, FINE-GRAINED VEINS ARE FILLED WITH ZEOLITE+CHLORITE+PYRITE FRESH TO SLIGHTLY CPX | MICROPHENOS CHLORITE | ZEOLITE | PYRITE 61 462 A 58 5 0.0 824.50 830.50 831.13 TOKUYAMA, H. CPX SLIGHTLY PHYRIC BASALT PCE 1 (1-6), 2 (10-20), 3 (22-34), 4A (36-45), 4B (45-50) 5 (54-61) SLIGHTLY PHYRIC, FINE-GRAINED, APHANITIC VEINS ARE FILLED WITH ZEOLITE+CHLORITE+PYRITE FRESH CPX PYRITE | CHLORITE | ZEOLITE 61 462 A 59 1 0.0 833.50 833.50 834.95 ROBINSON, P. T. CPX SLIGHTLY PHYRIC BASALT PCE 1 (1-81), 2 (84-136) SLIGHTLY PHYRIC, PHENOS IN A MATRIX OF DIABASIC TO FINE-GRAINED EQUIGRANULAR TEXTURED BASALT, GRAIN SIZE IS SLIGHTLY COARSER THAN THE FINE-GRAINED BASALT IN THE LOWER PORTION OF THE SECTION, CLAY PATCHES OCCUR IN THE COARSE-GRAINED PORTIONS BASALT SILL, VEINS ARE FILLED WITH CLAY+ZEOLITE+ PYRITE SLIGHTLY CLAY PATCHES IN COARSE-GRAINED PORTIONS A PORTION OF ONE COOLING UNIT (INTRUSIVE) IS REPRESENTED IN THIS SECTION CPX 1-2 <=1 PLAG | AUGITE | OP.MINS comments : COMPOSTION OF COARSE-GRAINED GNDMASS PLUS ALTERATION PRODUCTS CLAY.MIN | ZEOLITE | PYRITE 61 462 A 59 2 0.0 833.50 835.00 836.25 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTSAME MINERALOGY AND TEXURE AND ALTERATION AS COARSE PORTION OF THE LAST SECTION PCE 1 (0-119) SPARSELY PHYRIC, FINE-GRAINED, GRAIN SIZE DECREASES SLIGHTLY DOWNWARD DOLERITE SILL SLIGHTLY THE TOP OF A SECOND UNIT (INTRUSIVE) IS REPRESENTED IN THIS SECTION CPX 1-2 <=1 PLAG | AUGITE | OP.MINS comments : COMPOSTION OF COARSE-GRAINED GNDMASS PLUS ALTERATION PRODUCTS CLAY.MIN | ZEOLITE | PYRITE 61 462 A 59 3 0.0 833.50 836.50 837.83 ROBINSON, P. T. DOLERITEEXACTLY LIKE THAT OF SECTION 2 IN EVERY RESPECT PCE 1 (1-117), 2 (120-133) MEDIUM TO COARSE-GRAINED 61 462 A 59 4 0.0 833.50 838.00 839.49 ROBINSON, P. T. DOLERITESAME AS SECTIONS 3 AND 2 PCE 1 (0-75), 2 (77-90), 3 (94-149) MEDIUM TO COARSE-GRAINED DOLERITE, MAFIC PHENOS IN A FINE-GRAINED MATRIX SLIGHTLY SAME UNIT AS IN SECTIONS 59-2 AND 59-3 1-2 0.2-0.5 comments : MAFIC PHENOS 61 462 A 59 5 0.0 833.50 839.50 839.64 ROBINSON, P. T. DOLERITE SILLCONTINUED FROM SECTION 59-4 SILL UNIT 2 61 462 A 59 5 14.0 833.50 839.64 840.90 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTPILLOW BASALT PCE 1 (14-38), 2 (40-47), 3 (50-57), 4 (60-66), 5 (70-85), 6 (88-92), 7 (93-112), 8 (115-138) SPARSELY PHYRIC, FINE-GRAINED, GLASSY MARGINS OCCUR AT 15CM+89CM+113-115CM, THE INTERIOR BASALT IS MADE OF A FEW PHENOS OF CPX IN A GLASSY TO VARIOLITIC AND EQUIGRANULAR MATRIX OF APHANITIC DARK AND LIGHT GRAY BASALT, SOME COARSER GRAINED FRAGMENTS HAVE SPOTTED TEXTURES FOUR PILLOW BASALT UNITS, VEINS FILLED WITH PYRITE AND GREEN CLAY FOUR BASALT UNITS (14-59)+(59-85)+(85-113)+ (113-140) CPX 1 <0.5 comments : INTERIOR OF BASALT ZEOLITE | PYRITE | CLAY.MIN comments : GREEN CLAY 61 462 A 59 6 0.0 833.50 841.00 841.50 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTPILLOW BASALTSAME AS BOTTOM OF SECTION 5 PCE 1 (0-50) (TOP) SPARSELY PHYRIC PILLOW BASALT CPX 1 <0.5 61 462 A 59 6 50.0 833.50 841.50 842.47 ROBINSON, P. T. PILLOW BASALT PCE 1 (50-57) (BOTTOM), 2 (63-70), 3 (71-74), 4 (76-80), 5 (82-95), 6 (96-102), 7 (104-125), 8 (127-147) GLASSY MARGINS OCCUR AT 74CM+90CM+95CM+125CM FOUR PILLOW BASALT UNITS FOUR BASALT UNITS (50-74)+(74-90)+(90-125)+ (125-150) 61 462 A 59 7 0.0 833.50 842.50 843.14 ROBINSON, P. T. PILLOW BASALTSAME AS PREVIOUS SECTION PCE 1 (0-11), 2 (13-50), 3 (54-61) FINE-GRAINED, A THIN GLASSY MARGIN (1-2CM) OCCURS AT THE TOP OF THE SECTION PILLOW BASALT, VEINS FILLED WITH PYRITE+ZEOLITE+ CLAY THESE FRAGMENTS (PCES 1+2) WERE IN THE CORE CATCHER AND THEIR STRATIGRAPHIC ORIENTATION IS UNKNOWN 61 462 A 60 1 0.0 842.50 842.50 843.98 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTPILLOW BASALT PCE 1 (0-4), 2 (5-22), 3 (26-30), 4 (34-39), 5 (41-47), 6 (50-62), 7 (65-75), 8 (77-82), 9 (85-135), 10 (137-148) SPARSELY PHYRIC, GLASSY MARGINS 1-2CM THICK OCCUR FROM (0-40)+(40-74)+(74-113)+(113-150), UNITS RANGE IN TEXTURE FROM GLASSY TO EQUIGRANULAR, INTERVALS (0-4) AND (85-104) ARE COARSE-GRAINED PILLOW BASALT, VEINS ARE FILLED WITH PYRITE+CLAY+ PHILLIPSITE AND ARE MORE ABUNDANT THAN IN PREVIOUS CORES comments: SPOTS OF PYRITE+CLAY+PHILLIPSITE ARE MORE ABUNDANT THAN PREVIOUS CORES SEVERAL PILLOW UNITS CPX 1 0.2-0.4 PLAG | CPX | OP.MINS comments : THE COARSER FRAGMENTS HAVE HOLOXTALLINE GNDMASS OF PLAG+CPX+OP.MINS+ALTERATION PRODUCTS PYRITE | CLAY.MIN | PHIL 61 462 A 60 2 0.0 842.50 844.00 845.31 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTPILLOW BASALTIDENTICAL IN ALL RESPECTS TO SECTION 1 PCE 1 (1-15), 2 (19-51), 3 (54-61), 4 (64-102), 5 (106-115), 6 (119-129) SPARSELY PHYRIC PILLOW BASALT comments: CONCENTRATION OF PHIL OCCURS AT 71CM FOUR UNITS OF PILLOW BASALTS CPX 1 0.2-0.4 PLAG | CPX | OP.MINS comments : THE COARSER FRAGMENTS HAVE HOLOXTALLINE GNDMASS OF PLAG+CPX+OP.MINS+ALTERATION PRODUCTS PYRITE | CLAY.MIN | PHIL comments : IN VEINS 61 462 A 60 3 0.0 842.50 845.50 847.00 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTPILLOW BASALTIDENTICAL IN ALL RESPECTS TO THE PREVIOUS SECTION PCE 1 (1-40), 2 (40-51), 3 (57-60), 4 (64-106), 5 (108-135), 6 (136-149) SPARSELY PHYRIC, SLIGHTLY COARSER GRAINED REGION AT INTERVAL (30-60) PILLOW BASALT TWO UNITS OF PILLOW BASALTS CPX 1 0.2-0.4 PLAG | CPX | OP.MINS comments : THE COARSER FRAGMENTS HAVE HOLOXTALLINE GNDMASS OF PLAG+CPX+OP.MINS+ALTERATION PRODUCTS PYRITE | CLAY.MIN | PHIL comments : IN VEINS 61 462 A 60 4 0.0 842.50 847.00 847.90 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALT PCE 1 (0-20), 2 (21-89) SPARSELY PHYRIC, APHANITIC GNDMASS, MOST OF THE FRAGMENTS (20-90) ARE COARSER BASALTS WITH A HOLOXTALLINE GNDMASS FROM 29 TO 90CM ARE FRAGMENTS FROM THE CORE CATCHER AND THEIR ORIENTATION AND STRATIGRAPHIC POSITION ARE UNKNOWN CPX 1 0.2-0.4 PLAG | CPX | OP.MINS comments : THE COARSER FRAGMENTS HAVE HOLOXTALLINE GNDMASS OF PLAG+CPX+OP.MINS+ALTERATION PRODUCTS 61 462 A 61 1 0.0 851.50 851.50 853.00 TOKUYAMA, H. PILLOW-LIKE BASALT PCE 1 (0-5), 2 (8-17), 3 (20-29), 4 (30-35), 5 (37-44), 6A (46-55), 6B (55-61), 6C (62-66), 6D (66-84), 7A (87-105), 7B (103-117), 7C (117-124), 8A (125-140), 8B (140-149) IN PCES 1+2 DECREASING GRAIN SIZE DOWNWARD FROM SLIGHTY MEDIUM TO GLASSY LOWER MARGIN AND APHANITIC WITH SPARSE SPOTS OF CPX MICROPHENOS, PCES 3+4 HAVE GLASSY UPPER MARGINS AND PCE 6C HAS A GLASSY LOWER MARGIN, PCES 3-6C ARE FINE-GRAINED, IN PCES 6D-8B INCREASING GRAIN SIZE DOWNWARD AND PCE 6D HAS A GLASSY UPPER MARGIN AND IS FINE-GRAINED, PCES 7A-8B ARE SLIGHTLY MEDIUM TO MEDIUM-GRAINED AND INTERSERTAL TEXTURE PILLOW-LIKE BASALT, VEINS ARE FILLED WITH ZEOLITE (PHIL) AND PYRITE SLIGHTLY CPX comments : MICROPHENOS, SPARSE IN PCES 1+2 ZEOLITE comments : PHIL | PYRITE 61 462 A 61 2 0.0 851.50 853.00 854.50 TOKUYAMA, H. PILLOW-LIKE BASALTSAME AS SECTION 61-1 PCE 1A (0-17), 1B (19-30), 2A (34-36), 2B (36-58), 3 (60-80), 4 (85-91), 5 (95-100), 6 (100-110), 7 (115-120), 8A (124-129), 8B (129-132), 8C (135-135), 8D (136-140), 9 (143-150) PCES 1A-2B ARE MEDIUM-GRAINED, PCES 3-5 ARE SLIGHTLY MEDIUM TO SLIGHTLY FINE-GRAINED, PCES 6+7 ARE FINE- GRAINED AND WITHOUT A GLASSY LOWER MARGIN, PCES 8A- 8D ARE FINE-GRAINED AND WITHOUT GLASSY UPPER MARGIN ON BOTH SIDES PILLOW-LIKE BASALT, VEINS ARE FILLED WITH ZEOLITE+ CHLORITE+PYRITE SLIGHTLY THE UNIT IS CONTINUED FROM SECTION 61-1 ZEOLITE | CHLORITE | PYRITE 61 462 A 61 3 0.0 851.50 854.50 855.20 TOKUYAMA, H. CPX-OL MICROPHYRIC BASALT PCE 1A (0-10), 1B (10-15), 1C (15-20), 2 (22-33), 3 (35-50), 4 (55-66) MICROPHYRIC, TOP OF PCE 1A IS AN UPPER GLASSY MARGIN (2-3CM) AND THE LOWER PORTION IS MICROPHYRIC, PCES 1B+1C ARE SLIGHTLY FINE-GRAINED, PCES 2-4 ARE SLIGHTLY MEDIUM TO MEDIUM-GRAINED VEINS ARE FILLED WITH CHLORITE+PYRITE+ZEOLITE FRESH THIS SECTION IS THE SAME UNIT AS IN SECTION 61-2 CPX comments : MICROPHENOS | OL comments : MICROPHENOS PYRITE | ZEOLITE | CHLORITE 61 462 A 61 3 70.0 851.50 855.20 856.00 TOKUYAMA, H. PLAG-CPX BASALT PCE 5A (75-100), 5B (100-110), 5C (110-138), 5B (138-147) MEDIUM-GRAINED, EQUIGRANULAR IN PCE 5A MANY CHLORITE+PYRITE+ZEOLITE VEINS SLIGHTLY PCE 5A | FRESH PCE 5B THIS SECTION IS THE SAME UNIT AS IN SECTION 61-2 CPX | PLAG CHLORITE | ZEOLITE | PYRITE 61 462 A 61 4 0.0 851.50 856.00 857.00 TOKUYAMA, H. PLAG-CPX BASALTSINGLE BASALT UNIT CONTINUED FROM PREVIOUS SECTION PCE 1A (0-25), 1B (26-52), 1C (50-70), 1D (65-84), 1E (83-100) PCES 1A-1C ARE MEDIUM-GRAINED (EQUIGRANULAR), IN PCES 1D+1E DECREASING GRAIN SIZE DOWNWARD FROM MEDIUM TO FINE-GRAINED, AT THE BOTTOM OF PCE 1E IS A CHILLED MARGIN AND IS FINE-GRAINED VEINS ARE FILLED WITH CHLORITE+PYRITE+ZEOLITE FRESH PCES 1A+1C-1E AND INTERVAL (45-52) OF PCE 1B ARE FRESH ONE OF TWO BASALT UNITS IN THIS SECTION CPX | PLAG CHLORITE | ZEOLITE | PYRITE 61 462 A 61 4 100.0 851.50 857.00 857.50 TOKUYAMA, H. CPX SPARSELY MICROPHYRIC BASALT PCE 2 (103-120), 3 (123-150) PCE 2 IS A CHILLED MARGIN AND IS FINE-GRAINED, IN PCE 3 INCREASING GRAIN SIZE DOWNWARDS FROM SLIGHTLY FINE-GRAINED TO SLIGHTLY MEDIUM-GRAINED WITH SPARSE SPOTS OF CPX MICROPHENOS | SPARSELY MICROPHYRIC VEINS ARE FILLED WITH CHLORITE+PYRITE+ZEOLITE FRESH SLIGHTLY FRESH SINGLE BASALT UNIT CPX comments : MICROPHENOS CHLORITE | ZEOLITE | PYRITE 61 462 A 61 5 0.0 851.50 857.50 859.00 TOKUYAMA, H. CPX PHYRIC BASALT PCE 1A (0-6), 1B (6-40), 1C (35-55), 1D (56-72), 1E (75-86), 2A (92-105), 2B (107-112), 3 (118-138), 4 (140-150) PHYRIC, SLIGHTLY MEDIUM-GRAINED VEINS ARE FILLED WITH CHLORITE+ZEOLITE+PYRITE | HOMOGENEOUS SLIGHTLY SAME UNIT AS PREVIOUS SECTION CPX CHLORITE | ZEOLITE | PYRITE 61 462 A 61 6 0.0 851.50 859.00 859.30 TOKUYAMA, H. CPX PHYRIC BASALT PCE 1 (0-14), 2 (18-28) PHYRIC, SLIGHTLY MEDIUM-GRAINED HOMOGENEOUS, VEINS ARE FILLED WITH CHLORITE+ZEOLITE+ PYRITE SLIGHTLY CONTINUED FROM PREVIOUS SECTION CPX CHLORITE | ZEOLITE | PYRITE 61 462 A 62 1 0.0 860.50 860.50 861.90 TOKUYAMA, H. PILLOW BASALT PCE 1A (0-17), 1B (18-27), 2B (101-140) PCES 1A+1B ARE FINE-GRAINED, PCE 2B IS SLIGHTLY MEDIUM-GRAINED PILLOW BASALT, VEINS ARE FILLED WITH CHLORITE+ ZEOLITE(PHIL)+PYRITE SLIGHTLY CHLORITE | ZEOLITE comments : PHIL | PYRITE 61 462 A 62 1 0.0 860.50 860.50 861.90 TOKUYAMA, H. CPX SPARSELY PHYRIC BASALT PCE 1B (27-32), 1C (32-46), 1D (47-61), 1E (62-73), 1F (74-83) SPARSELY PHYRIC, PCES 1B-1F ARE SLIGHTLY FINE- GRAINED WITH SPARSE SPOTS OF CPX MICROPHENOS AND APHANITIC GNDMASS, PCE 2A IS SLIGHTLY MEDIUM- GRAINED AND EQUIGRANULAR WITH SPARSE SPOTS OF CPX PHENOS VEINS ARE FILLED WITH CHLORITE+ZEOLITE(PHIL)+ PYRITE SLIGHTLY CPX <1 comments : IN PCES 1B(27CM)-1F | CPX 1-3 comments : CPX SPOTS IN PCE 2A CHLORITE | ZEOLITE comments : PHIL RITE 61 462 A 62 2 0.0 860.50 862.00 863.48 TOKUYAMA, H. PILLOW BASALT PCE 1A (1-36), 1B (37-46), 2E (130-132) PCE 1A AND TOP OF PCE 1B (TO 46CM) IS SLIGHTLY MEDIUM-GRAINED AND EQUIGRANULAR, BOTTOM OF 2E IS FINE-GRAINED VEINS ARE FILLED WITH CHLORITE+PYRITE+ZEOLITE CONTINUED FROM PREVIOUS SECTION CHLORITE | ZEOLITE | PYRITE 61 462 A 62 2 0.0 860.50 862.00 863.48 TOKUYAMA, H. CPX MICROPHYRIC BASALTPILLOW BASALT PCE 1B (37-60), 1C (60-65), 2A (69-81), 2B (83-90), 2C (92-109), 2D (110-125), 2E (125-132), 2F (134-147) MICROPHYRIC, BOTTOM OF PCE 1B (FROM 46CM) TO TOP OF PCE 1C (TO 130) AND PCE 2A (FROM 73CM) TO PCE 2E (TO 130CM) AND PCE 2F (FROM 137CM) TO BOTTOM OF PCE 2F ARE SLIGHTLY MEDIUM-GRAINED AND EQUIGRANULAR PILLOW BASALT, VEINS ARE FILLED WITH CHLORITE+ PYRITE+ZEOLITE SLIGHTLY CPX comments : MICROPHENOS PYRITE | ZEOLITE | CHLORITE 61 462 A 62 2 0.0 860.50 862.00 863.48 TOKUYAMA, H. APHYRIC BASALTPILLOW BASALT PCE 1C (60-65), 2A (69-81), 2F (134-147) APHYRIC, BOTTOM OF PCE 1C (FROM 62CM) AND TOP OF PCE 2A (TO 73CM) AND TOP OF PCE 2F ARE FINE- GRAINED PILLOW BASALT, VEINS ARE FILLED WITH CHLORITE+ PYRITE+ZEOLITE SLIGHTLY PYRITE | ZEOLITE | CHLORITE 61 462 A 62 3 0.0 860.50 863.50 864.98 TOKUYAMA, H. CPX MICROPHYRIC BASALTPILLOW BASALT PCE 1 (1-11), 2 (16-24), 3 (25-36), 4 (40-44), 5A (46-5), 5B (55-69), 5C (69-73), 5D (74-78), 5E (78-92), 6 (93-110), 7A (113-115), 7B (116-121), 7C (122-131), 8 (134-150) MICROPHYRIC, PCES 1-3 ARE SLIGHTLY MEDIUM TO SLIGHTLY FINE-GRAINED, PCE 4 IS FINE-GRAINED, TOP OF PCE 5A IS A GLASSY CHILLED MARGIN, INTERVAL (100-110) OF PCE 6 IS FINE-GRAINED, PCE 7B HAS A LATERAL GLASSY CHILLED MARGIN, PCES 7C+8 ARE FINE- GRAINED PILLOW BASALT, VEINS ARE FILLED WITH PYRITE+CHLORITE +ZEOLITE, ZEOLITE VEIN OR CAVITY NOTED AT BOUNDARY AT 47CM SLIGHTLY CONTINUED FROM LOWER UNIT OF PREVIOUS SECTION CPX comments : SPOTS OF CPX MICROPHENOS IN PCES 1-3, IN PCES 5A-5C INCREASING GRAIN SIZE OF CPX MICROPHENOS, INPCES 5D-6 (TO 100CM) DECREASING GRAIN SIZE OF CPXMICROPHENOS, IN PCES 7C+8 RARE SPOTS OF CPXMICROPHENOS CHLORITE | PYRITE | ZEOLITE 61 462 A 62 4 0.0 860.50 865.00 865.38 TOKUYAMA, H. PILLOW BASALT PCE 1 (0-35) FINE-GRAINED WITH RARE SPOTS OF CPX MICROPHENOS (<1MM), ONE RELATIVE LARGE PCE HAS A GLASSY MARGIN PILLOW BASALT, SMALL CRUSHED PARTICLES SLIGHTLY CPX <1 61 462 A 63 1 0.0 864.50 864.50 866.00 SHCHEKA, S. A. MICRODOLERITE PCE 1 (0-6), 2 (10-25), 3 (25-34), 4A (38-45), 4B (45-61), 4C (61-90), 4D (90-115), 5A (117-130), 5B (131-150) GLASSY AND APHANITIC, MEDIUM-GRAINED IN MIDDLE OF UNIT INTERVAL, FROM 35 TO 38CM IS AN ASH-LIKE COARSE-GRAINED ROCK WITH COARSE CRYSTALS SURROUNDED BY ALTERED APHANITIC MATERIAL PYRITE+CHLORITE+CLAY VEINS AND ZEOLITE VEINS ARE PRESENT, FROM 10 TO 24CM ARE THIN DENDRITIC VEINS OF FINE-GRAINED MORE XTALLINE MICRODOLERITES IN APHANITIC ONES THREE UNITS-(0-25) AND (25-45) AND (45-150) comments : VESICULAR NEAR CONTACTS OF UNITS PLAG | CPX PYRITE | CHLORITE | CLAY.MIN | ZEOLITE 61 462 A 63 2 0.0 864.50 866.00 867.01 SHCHEKA, S. A. MICRODOLERITESAME MICRODOLERITES AS ABOVE PCE 1A (0-15), 1B (15-35), 2 (36-47), 3 (50-62), 4A (65-75), 4B (75-81), 4C (81-100) CHILLED MARGIN INTERVAL (65-80) THIN DENDRITIC VEINS OF FINE- GRAINED MICRODOLERITES IN APHANITIC (QUENCHED) ROCKS OF CHILLED MARGIN, PYRITE+CHLORITE+CLAY VEINS ARE PRESENT CHLORITE | PYRITE | CLAY.MIN 61 462 A 64 1 0.0 869.50 869.50 870.92 TOKUYAMA, H. MASSIVE BASALT SILLCPX SPARSELY MICROPHYRIC BASALT PCE 1A (0-17), 1B (16-43), 1C (43-85), 1D (85-117), 1E (118-141) SLIGHTLY MEDIUM-GRAINED, EQUIGRANULAR WITH SPARSE SPOTS OF CPX MICROPHENOS (<1MM) IN APHANITIC GNDMASS, LOWER PART SLIGHTY LESS CPX MICROPHYRIC THAN UPPER PART HOMOGENEOUS MASSIVE BASALT, IN PCE 1A SOME VEINS ARE FILLED WITH CHLORITE+ZEOLITE FRESH CPX <1 comments : SPARSE SPOTS OF CPX MICROPHENOS, LOWER PART ISSLIGHTLY LESS MICROPHYRIC THAN UPPER PART CHLORITE | ZEOLITE 61 462 A 64 2 0.0 869.50 871.00 872.27 TOKUYAMA, H. MASSIVE BASALT SILLPLAG-CPX SPARSELY MICROPHYRIC BASALT PCE 1A (0-25), 1B (25-59), 1C (60-115), 1D (115-127) SLIGHTLY MEDIUM-GRAINED IN PCE 1A AND INCREASING TO MEDIUM TO SLIGHTLY COARSE-GRAINED IN PCE 1D, EQUIGRANULAR TO SUBOPHITIC MASSIVE BASALT SILL, IN PCES 1B+1C+1D VEINS ARE FILLED WITH ZEOLITE+CHLORITE+PYRITE | SLIGHTLY CONTINUED UNIT FROM PREVIOUS SECTION CPX | PLAG comments : MICROPHENOS COMBINE comments : INCLUDES PLAG+CPX+MAGN MICROLITES ZEOLITE | CHLORITE CPX | PYRITE | CLAY.MIN CPX 61 462 A 64 3 0.0 869.50 872.50 873.90 TOKUYAMA, H. MASSIVE BASALT SILL PCE 1A (0-40), 1B (40-59), 1C (60-69), 1D (70-79), 1E (79-84), 1F (84-100), 2 (104-130) PCES 1A+1B ARE SLIGHTLY COARSE-GRAINED WITH SPARSE SPOTS OF CPX PHENOS (1.0-1.5MM) AND ARE INTERGRANULAR TO SUBOPHITIC, IN PCES 1C-2 DECREASING GRAIN SIZE DOWNWARDS FROM SLIGHTLY COARSE TO MEDIUM- GRAINED, THE SIZE OF CPX PHENOS SPOTS ARE LESS THAN THAN OF THE UPPER SECTION (<1.0MM) IN PCES 1B-1D VEINS ARE PREVALENT, VEINS ARE FILLED BY CHLORITE+ZEOLITE+PYRITE, MASSIVE BASALT SILL SLIGHTLY CONTINUED FROM PREVIOUS SECTION CPX 1.0-1.5 CHLORITE | ZEOLITE | PYRITE 61 462 A 64 4 0.0 869.50 874.00 875.45 TOKUYAMA, H. MASSIVE BASALT SILL PCE 1A (1-20), 1B (22-35), 2A (37-50), 2B (50-52), 3 (55-65), 4A (67-73), 4B (75-81), 5 (86-101), 6A (106-132), 6B (134-145) IN PCES 1A-1B DECREASING GRAIN SIZE DOWNWARDS FROM SLIGHTLY MEDIUM TO FINE-GRAINED AND HAVE SPARSE SPOTS OF CPX(<1MM), IN PCES 2A-6A(105CM) CPX MICROPHENOS ARE PRESENT AND GRAIN SIZE IS INCREASING DOWNWARD FROM SLIGHTLY FINE TO SLIGHTLY COARSE GRAINED, IN PCES 6A(105CM)-6B CPX MICROPHENOS ARE PRESENT AND DECREASING GRAIN SIZE FROM SLIGHTLY COARSE TO MEDIUM-GRAINED MASSIVE BASALT SILL, VEINS ARE FILLED WITH PYRITE+ CHLORITE+ZEOLITE SLIGHTLY TWO BASALT UNITS MAY OCCUR-(0-35) AND (35-150?), INTERVAL (0-35) IS CONTINUED FROM 64-3 CPX <1 ZEOLITE | PYRITE | CHLORITE 61 462 A 64 5 0.0 869.50 875.50 877.00 TOKUYAMA, H. MASSIVE BASALT PCE 1A (0-10), 1B (10-22), 1C (22-32), 1D (32-40), 2 (43-53), 3 (56-65), 4A (68-81), 4B (84-90), 4C (91-96), 4D (96-102), 4E (102-106), 4F (106-110), 5 (112-130), 6 (130-149) PCES 1A-1D ARE DECREASING IN GRAIN SIZE FROM MEDIUM TO FINE-GRAINED, TOP OF PCE 2 AND BOTTOM OF PCE 4F ARE FINE-GRAINED, PCE 4B IS CORE OF THIS UNIT (43- 110) AND MEDIUM-GRAINED WITH SPARSE SPOTS OF CPX MICROPHENOS (<1MM), PCE 5 IS MADE OF MANY SMALL CRUSHED FINE-GRAINED PARTICLES, PCE 6 IS MEDIUM- GRAINED WITH CPX MICROPHENOS MASSIVE BASALT, VEINS ARE FILLED WITH PYRITE+ CHLORITE+ZEOLITE SLIGHTLY THREE BASALT UNITS EXIST-(0-40) AND (40-110) AND (110-150?) CPX <1 comments : IN PCES 4B AND 6 PYRITE | CHLORITE | ZEOLITE 61 462 A 65 1 0.0 876.50 876.50 877.95 ROBINSON, P. T. DIABASEMASSIVE BASALT SILL PCE 1 (1-20), 2 (22-47), 3 (50-66), 4 (70-74), 5 (76-142) MEDIUM-GRAINED DIABASE, SUBOPHITIC MASSIVE AND HOMOGENEOUS BASALT SILL, VEINS ARE FILLED WITH CHLORITE (OR GREEN CLAY) AND PYRITE AND ZEOLITE SLIGHTLY A FEW CLAY REPLACEMENT PATCHES ARE FOUND, ALTERATION IS MAINLY OBVIOUS AS HEAVY VEINING BELONGS TO A SINGLE COOLING UNIT | NO LINER USED-ANY PCE MAY BE OUT OF STRATIGRAPHIC ORDER OR MAY BE INCORRECTLY ORIENTED CPX <1 <0.7 PLAG | CPX | OP.MINS comments : ALTERATIONS ARE IN GNDMASS CHLORITE comments : OR CLAY | PYRITE | ZEOLITE 61 462 A 65 2 0.0 876.50 878.00 879.48 ROBINSON, P. T. DIABASEMASSIVE BASALT SILLSAME AS PREVIOUS SECTION IN ALL RESPECTS PCE 1 (1-148) MEDIUM-GRAINED DIABASE, SUBOPHITIC MASSIVE AND HOMOGENEOUS BASALT SILL, VEINS ARE FILLED WITH CHLORITE (OR GREEN CLAY) AND PYRITE AND ZEOLITE SLIGHTLY A FEW CLAY REPLACEMENT PATCHES ARE FOUND, ALTERATION IS MAINLY OBVIOUS AS HEAVY VEINING BELONGS TO A SINGLE COOLING UNIT CPX <1 <0.2 PLAG | CPX | OP.MINS comments : ALTERATIONS ARE IN GNDMASS CHLORITE comments : OR CLAY | PYRITE | ZEOLITE 61 462 A 65 3 0.0 876.50 879.50 880.81 ROBINSON, P. T. DIABASEMASSIVE BASALT SILLSAME AS PREVIOUS SECTION IN ALL RESPECTS EXCEPT FOR INCREASED ABUNDANCE OF VEINS PCE 1 (0-22), 2 (25-59), 3 (60-127) MASSIVE BASALT SILL, HEAVY VEINING WITH LIGHT GREEN CLAY AND PYRITE-VEINS UP TO 3MM THICK CPX <1 <0.2 PLAG | CPX | OP.MINS comments : ALTERATIONS ARE IN GNDMASS CHLORITE comments : OR CLAY | PYRITE | ZEOLITE 61 462 A 66 1 0.0 883.00 883.00 884.45 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME PETROLOGY AND MINERALOGY AND VEINS AS 65-3 PCE 1A (0-20), 1B (20-40), 1C (40-45), 1D (45-60), 1E (60-80), 1F (80-148) MASSIVE DOLERITE SILL SLIGHTLY 61 462 A 66 2 0.0 883.00 884.50 885.98 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS ABOVE PCE 1A (0-20), 1B (20-27), 1C (25-60), 1D (60-75), 1E (75-92), 1F (92-111), 1G (111-125), 1H (124-148) DOLERITE, MEDIUM-GRAINED SUBOPHITIC MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE+CLAY VEINS SLIGHTLY CPX <1 .2 PLAG | CPX | OP.MIN 61 462 A 66 3 0.0 883.00 886.00 887.50 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS ABOVE PCE 1A (0-15), 1B (15-40), 1C (40-70), 1D (70-90), 1E (88-106), 1F (104-150) MEDIUM-GRAINED SUBOPHITIC DOLERITE MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE+CLAY VEINS SLIGHTLY CPX <1 .2 PLAG | CPX | OP.MIN 61 462 A 66 4 0.0 883.00 887.50 888.86 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS ABOVE EXCEPT INTERVAL (110-130) IS MORE FINE GRAINED PCE 1A (0-15), 1B (16-35), 1C (35-61), 1D (61-85), 1E (85-106), 1F (107-131) SAME EXCEPT INTERVAL (110-130) IS SLIGHTLY MORE FINE GRAINED MICRODOLERITE MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE+CLAY VEINS SLIGHTLY CPX <1 .2 PLAG | CPX | OP.MIN CHLORITE | PYRITE | CLAY.MIN 61 462 A 66 5 0.0 883.00 889.00 890.34 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS INTERVAL (110-130) OF SECTION 66-4 PCE 1A (0-25), 1B (25-50), 1C (50-68), 1D (69-85), 1E (85-130) SAME AS ABOVE, MICRODOLERITIC MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE+CLAY VEINS SLIGHTLY CPX <1 .2 PLAG | CPX | OP.MIN CHLORITE | PYRITE | CLAY.MIN 61 462 A 66 6 0.0 883.00 890.50 892.00 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS SECTION 66-5 PCE 1A (0-25), 1B (25-50), 1C (50-60), 1D (60-76), 1E (76-87), 1F (87-100), 1G (101-110), 1H (110-124), 1I (125-150) SUBOPHITIC MICRODOLERITE, MEDIUM-GRAINED AS INTERVAL (110-130) OF SECTION 66-4 MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE+CLAY VEINS SLIGHTLY SAME UNIT AS 65-1 CPX <1 .2 PLAG | CPX | OP.MIN CHLORITE | PYRITE | CLAY.MIN 61 462 A 66 7 0.0 883.00 892.00 892.37 SHCHEKA, S. A. MASSIVE DOLERITE SILLSAME AS ABOVE PCE 1A (0-12), 1B (14-37) SUBOPHITIC MICRODOLERITE, MEDIUM-GRAINED AS IN INTERVAL (110-130) OF SECTION 66-4 MASSIVE DOLERITE SILL, VEINING OCCURS SLIGHTLY ALTERATION OCCURS AS HEAVY VEINING SAME UNIT AS 65-1 CPX <1 .2 PLAG | CPX | OP.MIN CHLORITE | PYRITE | CLAY.MIN 61 462 A 67 1 0.0 892.00 892.00 893.31 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (0-8), 1B (9-13), 1C (14-61), 1D (61-86), 1E (85-110), 1F (110-129) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DIABASE MATRIX MASSIVE DOLERITE SILL, A RATHER THICK SILL, VEINS CONSIST OF GREEN AND WHITE CLAY (NO PYRITE OR CALCITE OR ZEOLITE AS BEFORE) SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AS WELL AS VEINS STILL PART OF THE SAME UNIT CPX <1 .2 PLAG | CPX | OP.MIN comments : ALTERATION PRODUCTS IN GNDMASS CLAY comments : GREEN AND WHITE 61 462 A 67 2 0.0 892.00 893.50 894.95 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (1-40), 1B (40-91), 1C (91-114), 1D (110-145) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DIABASE MATRIX MASSIVE DOLERITE SILL, A RATHER THICK SILL, VEINS CONSIST OF GREEN AND WHITE CLAY (NO PYRITE OR CALCITE OR ZEOLITE AS BEFORE) SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AS WELL AS VEINS STILL PART OF THE SAME UNIT AS SECTION 67-1 CPX <1 .2 PLAG | CPX | OP.MIN comments : ALTERATION PRODUCTS IN GNDMASS CLAY comments : GREEN AND WHITE 61 462 A 67 3 0.0 892.00 895.00 896.50 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (1-11), 1B (11-37), 1C (37-87), 1D (86-150) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DIABASE MATRIX MASSIVE DOLERITE SILL, A RATHER THICK SILL, VEINS CONSIST OF GREEN AND WHITE CLAY (NO PYRITE OR CALCITE OR ZEOLITE AS BEFORE) SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AS WELL AS VEINS SAME UNIT AS SECTION 67-1 CPX <1 .2 PLAG | CPX | OP.MIN comments : ALTERATION PRODUCTS IN GNDMASS CLAY comments : GREEN AND WHITE 61 462 A 67 4 0.0 892.00 896.50 897.96 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (1-23), 1B (25-36), 1C (36-68), 1D (65-117), 1E (117-122), 1F (120-145) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DIABASE MATRIX MASSIVE DOLERITE SILL, A RATHER THICK SILL, VEINS CONSIST OF GREEN AND WHITE CLAY (NO PYRITE OR CALCITE OR ZEOLITE AS BEFORE) SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AS WELL AS VEINS SAME UNIT AS SECTION 67-1 CPX <1 0.2-0.6 PLAG | CPX | OP.MIN comments : ALTERATION PRODUCTS IN GNDMASS CLAY comments : GREEN AND WHITE 61 462 A 67 5 0.0 892.00 898.00 899.48 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (0-44), 1B (44-62), 1C (62-81), 1D (81-110), 1E (110-120), 1F (121-148) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DIABASE MATRIX MASSIVE DOLERITE SILL, A RATHER THICK SILL, VEINS CONSIST OF GREEN AND WHITE CLAY (NO PYRITE OR CALCITE OR ZEOLITE AS BEFORE) SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AS WELL AS VEINS SAME UNIT AS SECTION 67-1 CPX <1 0.2-0.6 PLAG | CPX | OP.MIN comments : ALTERATION PRODUCTS IN GNDMASS CLAY comments : GREEN AND WHITE 61 462 A 67 6 0.0 892.00 899.50 900.90 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (0-6), 1B (6-17), 1C (17-30), 1D (30-52), 1E (48-72), 1F (71-83), 1G (79-102), 1H (101-116), 1I (117-140) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DOLERITE MATRIX MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH GREEN AND WHITE CLAY SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AND IN VEINS SAME UNIT AS SECTION 67-1 CPX <1 PLAG | CPX | MAGN comments : ALTERATION PRODUCTS ARE IN GNDMASS CLAY comments : GREEN AND WHITE CLAY 61 462 A 67 7 0.0 892.00 901.00 901.80 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (1-23), 1B (24-44), 1C (44-52), 1D (52-70), 1E (70-78) A FEW (<1%) PHENOS OF CPX IN A COARSE-GRAINED DOLERITE MATRIX MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH GREEN AND WHITE CLAY SLIGHTLY ALTERATION CONSISTS OF CLAY PATCHES IN THE ROCK AND IN VEINS SAME UNIT AS SECTION 67-1 CPX <1 PLAG | CPX | MAGN comments : ALTERATION PRODUCTS ARE IN GNDMASS CLAY comments : GREEN AND WHITE CLAY 61 462 A 68 1 0.0 901.00 901.00 902.40 ROBINSON, P. T. MASSIVE DOLERITE SILL PCE 1A (0-10), 1B (11-35), 1C (35-59), 1D (60-90), 1E (90-125), 1F (125-140) SUBOPHITIC TO INTERGRANULAR MEDIUM TO SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE SLIGHTLY CPX <1 comments : OFTEN FORMS AGGREGATES | PLAG <1 CPX | PLAG | MAGN comments : MICROLITES CHLORITE 61 462 A 68 2 0.0 901.00 902.50 903.62 TOKUYAMA, H. MASSIVE DOLERITE SILLCONTINUED FROM PREVIOUS SECTION PCE 1A (0-59), 1B (59-69), 1C (70-82), 1D (82-110) IN PCES 1A-1D DECREASING GRAIN SIZE DOWNWARD FROM SLIGHTLY COARSE TO MEDIUM-GRAINED (INTERSERTAL TO SUBOPHITIC), IN PCE 1D GRAIN SIZE ABRUPTLY CHANGES TO FINE WITH SPARSE SPOTS OF CPX MICROPHENOS (1.0- 1.5MM) (HYALOPILITIC), THE BOTTOM OF PCE 1D IS FINE- GRAINED MASSIVE DOLERITE SILL, VEINS ARE FILLED MAINLY BY CHLORITE SLIGHTLY SAME UNIT AS SECTION 68-1 CPX 1.0-1.5 comments : SPARSE SPOTS OF CPX MICROPHENOS CHLORITE comments : FILLING VEINS 61 462 A 68 2 112.0 901.00 903.62 903.86 TOKUYAMA, H. DOLERITE BRECCIA PCE 2 (115-135) FINE-GRAINED BRECCIATED DOLERITE PARTICLES SLIGHTLY 61 462 A 68 3 0.0 901.00 904.00 905.50 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (1-10), 2A (15-25), 2B (25-35), 2C (35-41), 2D (43-50), 2E (50-65), 3 (68-75), 4 (77-105), 5 (108-126), 6 (130-150) PCE 1 IS SLIGHTLY FINE-GRAINED, PCE 2A IS MEDIUM- GRAINED, PCE 2B IS FINE-GRAINED BUT ALTERED, PCES 2C+2D ARE SLIGHTLY FINE-GRAINED, IN PCES 2E-4 GRAIN SIZE INCREASES FROM SLIGHTLY FINE-GRAINED TO MEDIUM- GRAINED, IN PCES 4-6 GRAIN SIZE DECREASES MASSIVE DOLERITE SILL, VEINS ARE FILLED MAINLY BY CHLORITE (RARE PYRITE) SLIGHTLY CHLORITE | PYRITE comments : RARE, IN VEINS 61 462 A 68 4 0.0 901.00 905.50 907.00 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (0-5), 2A (8-18), 2B (19-26), 3 (30-43), 4A (45-53), 4B (54-75), 5A (77-95), 5B (95-100), 6 (103-114), 7 (115-135), 8 (138-150) PCE 1 IS CONTINUED FROM PREVIOUS SECTION AND FINE- GRAINED WITH CPX MICROPHENOS (<1MM), PCES 2A-2B ARE FINE-GRAINED, IN PCES 3-8 GRAIN SIZE INCREASES DOWNWARD FROM SLIGHTLY MEDIUM-GRAINED TO SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL WITH CHLORITE+PYRITE VEINS SLIGHTLY SAME UNIT AS SECTION 68-3 CPX <1 comments : IN PCE 1 CHLORITE | PYRITE 61 462 A 68 5 0.0 901.00 907.00 908.30 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (1-10), 2A (12-38), 2B (39-67), 3 (70-101), 4 (105-130) SLIGHTLY DECREASING GRAIN SIZE DOWNWARD FROM SLIGHTLY COARSE TO MEDIUM-GRAINED, THE MEDIUM- GRAINED PCE IS EQUIGRANULAR MASSIVE DOLERITE SILL WITH CHLORITE VEINS SLIGHTLY SAME UNIT AS PREVIOUS SECTION CHLORITE 61 462 A 68 6 0.0 901.00 908.50 908.95 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (0-13), 2 (15-25), 3 (25-29), 4 (30-43) PCE 1 IS MEDIUM-GRAINED, PCES 2+3 ARE SLIGHTLY FINE- GRAINED, PCE 4 IS SLIGHTLY FINE-GRAINED MASSIVE DOLERITE SILL, PCE 4 CONSISTS OF SMALL CRUSHED PARTICLES, POSSIBLE SILL BOUNDARY AT 44CM SLIGHTLY 61 462 A 69 1 0.0 910.00 910.00 911.31 SHCHEKA, S. A. MICRODOLERITE SILLS PCE 1A (0-5), 1B (5-8), 2 (11-20), 3A (24-35), 3B (37-50), 4A (52-65), 4B (65-72), 5A (74-76), 5B (77-82), 5C (82-87), 6 (71-106), 7 (109-115), 8 (119-130) FINE-GRAINED TO GLASSY NEAR CONTACTS, MEDIUM-GRAINED IN SILL INTERIOR SILL, CHLORITE-CLAY VEINS EXT HEAVILY ALTERED NEAR VEINS THREE UNITS, INTERVALS (0-9) AND (10-72) AND (74-130) CHLORITE | CLAY 61 462 A 69 2 0.0 910.00 911.50 912.75 SHCHEKA, S. A. MICRODOLERITE SILLS PCE 1 (0-10), 2A (14-20), 2B (20-25), 2C (25-30), 3 (35-38), 4 (40-50), 5 (52-65), 6A (69-75), 6B (75-82), 6C (81-91), 7 (92-125) IN INTERVAL (65-120) ARE SMALL PCES OF FINE-GRAINED MICRODOLERITES INTERVAL (0-65) IS THE BOTTOM OF SILL FROM SECTION 69-1, CHLORITE+CLAY VEINS EXT CHLORITE | CLAY 61 462 A 69 3 0.0 910.00 913.00 913.97 SHCHEKA, S. A. MICRODOLERITESILL PCE 1A (0-10), 2 (11-20), 3 (24-45), 4A (48-52), 4B (54-65), 4C (65-72), 4D (73-76), 5A (80-90), 5B (90-95) FINE-GRAINED TO APHANITIC AND GLASSY NEAR CONTACTS, MEDIUM-GRAINED IN SILL INTERIORS SILL, VEINS FILLED WITH CHLORITE AND CLAY EXT TWO UNITS-INTERVALS (0-22) AND (22-95) CLAY | CHLORITE 61 462 A 70 1 0.0 919.00 919.00 919.25 ROBINSON, P. T. HYALOCLASTITE AND HYALOCLASTITE BRECCIASEE SEDIMENT VISUAL DESCRIPTIONS (MAY BE CAVINGS) PCE 1 (0-25) 61 462 A 70 1 25.0 919.00 919.25 920.50 ROBINSON, P. T. APHANITIC BASALT PCE 2 (26-35), 3 (38-71), 4 (73-75), 5 (78-98), 6 (100-121), 7 (124-136), 8 (139-148) GLASSY TO FINE-GRAINED, INTERIOR PORTIONS OF FLOW UNITS ARE MORE COARSE-GRAINED WITH A PHANERITIC MATRIX comments: A FEW CLAY SPOTS ARE ALSO VISIBLE IN THE MORE PHANERITIC FRAGMENTS UNIT BOUNDARY IN PCE 2, POSSIBLE UNIT BOUNDARY AT 100CM INDICATED BY FINER GRAINED BOTTOM OF FRAGMENT 5B HOWEVER THE FINE-GRAINED APOPHYSES INDICATE THAT THIS COULD BE A GRAIN SIZE HETEROGENEITY WITHIN A SINGLE UNIT CLAY 61 462 A 70 2 0.0 919.00 920.50 922.00 ROBINSON, P. T. APHYRIC BASALT PCE 1 (1-29), 2 (31-41), 3 (44-149) APHYRIC, A FEW SMALL CPX PHENOS ARE VISIBLE, FINE- GRAINED APOPHYSES IN MEDIUM-GRAINED PCE, GRAIN SIZE INCREASES GRADUALLY THROUGH THIS SECTION, THE MIDDLE AND BOTTOM PORTIONS ARE PHANERITIC SLIGHTLY SPOTS OF CLAY AND CHALC AND PYRITE PROBABLE UNIT BOUNDARY AT 135CM CPX RARE CHALC | PYRITE | CLAY 61 462 A 70 3 0.0 919.00 922.00 923.49 ROBINSON, P. T. BASALT FRAGMENTS PCE 1 (0-18), 2 (20-132), 3 (135-148) GRAIN SIZE VARIATIONS ARE RATHER FREQUENT AND WITHOUT APPARENT PATTERN comments: MANY OF THE FRAGMENTS HAVE ABUNDANT CHALC AND ZEOLITE AND GREEN CLAY AND PYRITE ALTERATION SPOTS SEVERAL OF THE FRAGMENTS IN THIS SECTION ARE OUT OF STRATIGRAPHIC ORDER, EACH HANDFUL WAS PLACED IN POSITION AS IT WAS WITHDRAWN FROM THE LINERLESS CORE BARREL BUT WITHIN EACH HANDFUL THERE IS NO RELATIVE STRATIGRAPHIC POSITION INFORMATION AVAILABLE, A FEW INDIVIDUAL UNITS ARE REPRESENTED-(0-20) AND (20-63) AND (63-150), THE UNIT BOUNDARY AT 20CM IS UNCERTAIN CHALC | ZEOLITE | PYRITE | CLAY comments : GREEN CLAY 61 462 A 70 4 0.0 919.00 923.50 923.75 ROBINSON, P. T. MEDIUM-GRAINED BASALT PCE NO PCE NUMBERS ASSIGNED, INTERVAL (0-24) MEDIUM-GRAINED, SUB-PHANERITIC BASALT WITH PATCHY TEXTURE TYPICAL OF THE FLOW UNITS, FINE-GRAINED APOPLYSES IN MEDIUM-GRAINED BASALT 61 462 A 71 1 0.0 928.00 928.00 928.75 ROBINSON, P. T. BASALT+BASALTIC BRECCIA+POSSIBLE HYALOCLASTITE ALTERED PILLOW BRECCIA PCE 1 (1-5), 2 (9-12), 3 (15-20), 4 (25-29), 5 (33-38), 6 (42-54), 7 (57-65), 8 (70-74) IN PCE 5 APHANITIC FRAGMENTS IN GREEN ALTERED BASALT MATRIX, IN PCE 6 LIGHT GRAY APHANITIC FRAGMENTS AND LIGHT GRAY APHANITIC ZONE AND LIGHT GREEN ALTERED ZONE AND COARSE GRAINED BASALT WITH MANY PYRITE+CALCITE+CLAY BLOTCHES, PCE 8 IS MADE UP OF 1)PYRITE+CA+CLAY ALTERATION POCKET 2)DARK GRAY APHANITIC BASALT 3)LIGHT GRAY SLIGHTLY MORE CRYSTALLINE BASALT(?) AND 4)LIGHT GREEN ALTERED BASALT WITH CLAY VEINLETS 61 462 A 72 1 0.0 931.00 931.00 932.50 TOKUYAMA, H. PLAG-CPX MICROPHYRIC BASALT MASSIVE BASALT | PCE 1 (1-10), 2A (14-17), 2B (17-25), 2C (25-27), 3 (30-40), 4 (44-51), 5 (55-69), 6A (72-77), 6B (77-90), 7A (72-106), 7B (107-112), 7C (112-120), 7D (121-129), 7E (129-140), 7F (140-145), 7G (145-150) MICROPHYRIC, MEDIUM TO SLIGHTLY COARSE-GRAINED, SUBOPHITIC TO INTERGRANULAR HOMOGENENEOUS MASSIVE BASALT, VEINS ARE FILLED BY CHLORITE SLIGHTLY SLIGHTLY FRESH PLAG 1 | CPX 1 | MAGN 1 comments : MAGN ID UNCERTAIN PLAG | CPX | MAGN comments : MICROLITES CHLORITE 61 462 A 72 2 0.0 931.00 932.50 934.00 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE) PCE 1 (0-9), 2 (11-22), 3 (25-36), 4A (38-48), 4B (50-59), 4C (59-65), 5 (69-112), 6A (114-122), 6B (122-130), 7 (131-150) INTERVAL (0-78) IS SLIGHTLY COARSE-GRAINED(OPHITIC TO INTERGRANULAR), INTERVAL (78-88) DECREASING GRAIN SIZE DOWNWARD TO SLIGHTLY FINE (HYALOPILITIC), INTERVAL (88-92) IS FINE-GRAINED AND WITH CHILLED MARGIN WITH SPARSE CPX MICROPHENOS (APHYRIC), INTERVAL (92-95) IS SLIGHTLY FINE-GRAINED WITH SPARSE CPX MICROPHENOS, INTERVAL (95-150) IS SLIGHTLY COARSE-GRAINED TO MEDIUM MASSIVE SILL SLIGHTLY CPX comments : FEW, IN CHILLED MARGIN IN INTERVAL (88-92) ANDIN INTERVAL (92-95) 61 462 A 72 3 0.0 931.00 934.00 934.85 TOKUYAMA, H. MASSIVE BASALT SILL (DOLERITE)CONTINUED FROM SECTION 72-2 PCE 1 (0-5), 2 (5-28), 3 (20-28), 4A (30-40), 4B (40-45), 5 (48-62), 6 (65-70), 7 (71-84) SLIGHTLY COARSE-GRAINED MASSIVE BASALT SILL SLIGHTLY 61 462 A 73 1 0.0 937.00 937.00 938.45 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-9), 1B (6-15), 1C (15-27), 1D (28-35), 1E (35-50), 1F (51-70), 1G (70-81), 1H (82-90), 1I (90-100), 1J (102-110), 1K (110-122), 1L (120-130), 2 (133-145) SLIGHTLY COARSE TO COARSE-GRAINED, OPHITIC TO EQUIGRANULAR, THIS DOLERITE IS COMPOSED OF PHENOS OF PLAG AND CPX AND SOME MAGN MASSIVE DOLERITE SILL, VEINS ARE FILLED WITH CHLORITE AND ZEOLITE SLIGHTLY PLAG | CPX MAGN | PLAG | CPX CHLORITE | ZEOLITE 61 462 A 73 2 0.0 937.00 938.50 939.99 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (1-10), 2A (13-21), 2B (24-30), 3 (33-45), 4A (48-53), 4B (54-57), 4C (48-65), 5 (69-77), 6A (80-85), 6B (85-93), 7 (95-116), 8 (120-130), 9A (134-140), 9B (140-143), 9C (145-149) SLIGHTLY COARSE TO COARSE-GRAINED MASSIVE DOLERITE SILL SLIGHTLY SAME UNIT AS PREVIOUS SECTION 61 462 A 73 3 0.0 937.00 940.00 940.60 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (0-7), 2 (12-15), 3A (18-23), 3B (24-27), 4 (30-34), 5 (36-45), 6 (46-60) IN PCE 1 SMALL CRUSHED PARTICLES ARE COARSE TO SLIGHTLY COARSE-GRAINED, PCE 2 IS COARSE TO SLIGHTLY COARSE-GRAINED, PCE 3A IS COARSE-GRAINED WITH MEGACRYSTS OF CPX (3-4MM)-THE MARGINS OF THESE CRYSTALS ARE REPLACED TO CLAY MINERALS, PCES 4+5 ARE SLIGHTLY MEDIUM-GRAINED, PCE 6 IS MEDIUM-GRAINED MASSIVE DOLERITE SILL SLIGHTLY POSSIBLE BOUNDARY AT 28CM CPX 3-4 comments : CRYSTAL MARGINS ARE ALTERED TO A CLAY MINERAL CLAY.MIN CPX 61 462 A 74 1 0.0 946.00 946.00 947.42 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-10), 1B (12-20), 1C (21-34), 1D (35-60), 1E (60-76), 1F (76-85), 1G (84-92), 1H (92-95), 1I (95-106), 1J (107-115), 1K (115-125), 1L (125-135), 1M (135-141) PCES 1A-1M ARE MEDIUM-GRAINED WITH RARE MICROPHENOS OF CPX (SUBOPHITIC TO INTERSERTAL) MASSIVE DOLERITE SILL, IN PCES 1D+1E VEINS OF ZEOLITE+CHLORITE+PYRITE+MAGN(SMALL AMOUNT) SLIGHTLY IN PCES 1D+1E ARE ALTERATION PATCHES OF THE SAME VEIN MATERIAL CPX RARE ZEOLITE | CHLORITE | PYRITE | MAGN comments : SMALL AMOUNTS OF MAGN 61 462 A 74 2 0.0 946.00 947.50 948.97 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-15), 1B (15-20), 1C (20-48), 1D (49-72), 1E (73-106), 1F (107-146) PCE 1A IS MEDIUM-GRAINED, PCES 1B-1F ARE MEDIUM TO SLIGHTLY COARSE-GRAINED (OPHITIC TO INTERGRANULAR) MASSIVE DOLERITE SILL WITH VEINS FILLED WITH CHLORITE AND ZEOLITE SLIGHTLY SAME UNIT AS SECTION 74-1 CHLORITE | ZEOLITE 61 462 A 74 3 0.0 946.00 949.00 950.25 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-12), 1B (15-40), 1C (60-63), 1D (65-87), 1E (87-105), 1F (105-122) SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL WITH VEINS OF CHLORITE AND ZEOLITE SLIGHTLY SAME UNIT AS SECTION 74-2 61 462 A 74 4 0.0 946.00 950.50 951.97 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-28), 1B (29-50), 1C (50-84), 1D (85-115), 1E (115-138), 1F (138-141), 1G (142-145) PCES 1B-1G ARE SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL, IN PCE 1A INTERVAL (22-27) GRANOPHYRE SCHLIEREN SLIGHTLY SAME UNIT AS SECTION 74-3 61 462 A 74 5 0.0 946.00 952.00 953.45 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1A (0-15), 1B (14-27), 1C (27-32), 1D (31-50), 1E (50-56), 1F (57-70), 1G (70-77), 1H (78-90), 1I (91-107), 1J (128), 2 (120-130), 3 (130-145) SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL, CHLORITE AND ZEOLITE VEINS SLIGHTLY SAME UNIT AS SECTION 74-4 CHLORITE | ZEOLITE 61 462 A 74 6 0.0 946.00 953.50 953.65 TOKUYAMA, H. MASSIVE DOLERITE SILL PCE 1 (0-13) SLIGHTLY COARSE-GRAINED MASSIVE DOLERITE SILL SLIGHTLY SAME UNIT AS SECTION 74-5 61 462 A 75 1 0.0 953.00 953.00 954.50 VALLIER, T. DIABASE PCE 1 (5-10), 2A (13-25), 2B (25-32), 3A (33-43), 3B (39-46), 4 (48-67), 5A (70-80), 5B (74-87), 5C (83-120), 5D (115-132), 5E (126-140), 5F (140-150) HOLOXTALLINE MEDIUM-GRAINED DIABASIC(?) GNDMASS, MICROPHENOS OF PYX AND PLAG JOINTS ARE LINED WITH DARK GREENISH BLACK CHLORITE(?), SECTION OF ROCK IS MEGASCOPICALLY HOMOGENEOUS SLIGHTLY COLOR IS N5 GRAY PLAG | PYX comments : MICROPHENOS CHLORITE comments : DARK GREENISH BLACK, ID UNCERTAIN 61 462 A 75 2 0.0 953.00 954.50 956.00 SEIFERT, K. DIABASE PCE 1A (2-10), 1B (5-16), 1C (15-42), 1D (41-51), 1E (41-65), 1F (65-77), 2 (80-92), 3 (94-100), 4A (102-120), 4B (120-147) PYX AND PLAG MICROPHENOS IN A HOLOXTALLINE MEDIUM- GRAINED GNDMASS, NO SIGNIFICANT TEXTURAL VARIATIONS JOINTS FREQUENTLY COATED WITH SLICKENSIDES AND A GREENISH-BLACK COATING, MEGASCOPICALLY HOMOGENEOUS SLIGHTLY VERY SLIGHT ALTERATION, PERHAPS WEATHERING COLOR IS N5 GRAY PLAG | PYX comments : MICROPHENOS 61 462 A 75 3 0.0 953.00 956.00 957.50 VALLIER, T. DIABASE PCE 1A (3-6), 1B (4-10), 1C (10-22), 2 (25-47), 3A-3E (49-60), 4A (61-80), 4B (75-97), 4C (97-106), 4D (106-115), 5 (115-140) PYX AND FELDSPAR (LATHS) MICROPHENOS IN A HOLOXTALLINE MEDIUM-GRAINED DIABASIC (?) GNDMASS HOMOGENEOUS ROCK WITH RARE VEINS (THIN LAYERS ON JOINTS), MOST BREAKS ARE ALONG THESE VEINS SLIGHTLY COLOR IS N5 GRAY, PCE 5 PLACED IN SHRINK TUBING FOR CUTTING (MAY AFFECT MAGNETIC STUDIES) FELDSPAR | PYX comments : MICROPHENOS 61 462 A 75 4 0.0 953.00 957.50 959.00 VALLIER, T. DIABASE PCE 1 (2-24), 2 (25-35), 3 (36-45), 4A (47-55), 4B (55-75), 5A (78-80), 5B (80-102), 5C (102-127), 6A (131-143), 6B (143-150) MICROPHENOS OF PYX AND PLAG IN A HOLOXTALLINE MEDIUM GRAINED GNDMASS JOINTING IS IRREGULAR BUT MORE COMMON THAN IN SECTIONS 1-3,MOST JOINTS LINED BY PALE GREEN FIBROUS MATERIAL, TEXTURE IS MEGASCOPICALLY HOMOGENEOUS THROUGHOUT SLIGHTLY PARTICULARLY ALONG JOINTS COLOR N5 GRAY, PCES 1+4B+5C WERE PUT IN SHRINK TUBING FOR CUTTING, MAY AFFECT PALEOMAGNETICS PLAG | PYX comments : MICROPHENOS comments : PALE GREEN FIBROUS MINERAL LINING JOINTS 61 462 A 75 5 0.0 953.00 959.00 960.44 SEIFERT, K. DIABASE PCE 1 (1-20), 2 (22-55), 3 (57-66), 4 (70-82), 5 (85-90), 6 (93-107), 7 (110-123), 8 (125-140) HOLOXTALLINE MEDIUM-GRAINED GNDMASS, EXCELLENT SLICKENSIDE DEVELOPMENT AT THE BASE OF PCE 4 WITH SOME PYRITE CRYSTALS(DARK GREEN TO BLACK) MEGASCOPICALLY HOMOGENEOUS EXCEPT FOR A FEW PATCHES OF SLIGHTLY MORE MAFIC REGIONS-MOSTLY NEAR THE BASE OF PCE 7 AND THE TOP OF PCE 8 COLOR IS N5 GRAY PYX comments : MICROPHENOS PYX | PLAG PYRITE comments : DARK GREEN TO BLACK IN COLOR 61 462 A 76 1 0.0 958.00 958.00 958.72 WINDOM, K BASALT(DIABASE) PCE 1 (5-10), 2 (11-20), 3 (22-35), 4 (35-54), 5 (56-70) HOLOXTLLINE GNDMASS, PCES 1-4 HAVE DIABASIC TEXTURE, PCE 5 APPEARS FINER GRAINED THAN OTHERS BUT EXHIBITS NO TEXTURAL VARIATION MEGASCOPICALLY HOMOGENEOUS, PCE 5 CONTAINS GREEN ALTERATION MINERAL+PYRITE+ZEOLITE ALONG FRACTURE ZONE FRESH TO SLIGHTLY | MOD COLOR IS N5 GRAY, PCE 3 IS RUBBLE (BAGGED) | COLOR IS N5 GRAY, INTERVAL BETWEEN PCES 3E AND 4A INTERPRETED AS CONTACT SEPARATING TWO COOLING UNITS- NO GLASS FOUND HOWEVER PYX PYX | PLAG | PLAG | PYX PYRITE | ZEOLITE | PYRITE TO 7 comments : ABUNDANT | ZEOLITE comments : ID UNCERTAIN | CALCITE comments : ID UNCERTAIN comments : A GREEN MINERAL IS PRESENT IN VEINS THAT FILL FRACTURES 61 462 A 77 1 0.0 967.00 967.00 968.50 WINDOM, K DIABASEAPPEARS IDENTICAL TO BASALT DESCRIBED IN CORE 76 EXCEPT FOR VARIATION OF GRAIN SIZE PCE 1 (2-10), 2 (12-31), 3A (34-54), 3B (52-55), 3C (55-66), 3D (66-69), 3E (68-73), 4A (80-87), 4B (87-101), 4C (101-112), 4D (112-120), 4E (120-135), 4F (135-142), 4G (142-149) HOLOCRYSTALLINE, NO GLASS FOUND, GRAIN SIZE DECREASES DOWNWARD FROM TOP TO BOTTOM OF PCE 3E THEN COARSENS FROM TOP OF PCE 4A TO END OF SECTION ROCK IS HIGHLY FRACTURED AND CONTAINS A GREEN MINERAL AND ABUNDANT PYRITE (AS MUCH AS 7MM ACROSS) AND ZEOLITE(?) AND CALCITE(?) IN VEINS THAT FILL FRACTURES, OPTICAL EXAMINATION OF WHITE VEIN MATERIAL IN PCE 4F REVEALS CALCITE-NO ZEOLITE NOTED INTERVAL BEYWEEN PCES 3E AND 4A INTERPRETED AS CONTACT SEPARATING TWO COOLING UNITS, BASALT IS N5 GRAY PLAG | PYX PYRITE TO 7 | ZEOLITE comments : ID UNCERTAIN | CALCITE 61 462 A 77 2 0.0 967.00 968.50 969.92 WINDOM, K DIABASE PCE 1A (2-7), 1B (7-13), 1C (14-20), 1D (20-27), 2A (30-32), 2B (31-39), 2C (40-48), 2D (48-59), 2E (59-69), 2F (70-89), 2G (89-101), 2H (102-111), 2I (111-119), 2J (119-132), 2K (131-140) HOMOGENEOUS HOLOCRYSTALLINE ROCK COMPOSED OF INTERLOCKING PLAG AND PYX FORMING A DIABASIC TEXTURE NUMEROUS FRACTURES AND VEINS FILLED WITH PYRITE AND ZEOLITE(?) MOD LITTLE OR NO OBVIOUS ALTERATION OF ROCK AWAY FROM VEINS BASALT IS N5-N6 GRAY PLAG | PYX PYRITE | ZEOLITE 61 462 A 77 3 0.0 967.00 970.00 971.34 WINDOM, K DIABASE PCE 1A (1-30), 1B (30-40), 1C (40-55), 1D (55-65), 2A (70-72), 2B (71-85), 3A (86-90), 3B (89-96), 3C (96-102), 3D (102-107), 3E (107-115), 4 (118-130) DIABASIC TEXTURE MEGASCOPICALLY HOMOGENEOUS, NUMEROUS FRACTURES SOME OF WHICH CONTAIN VEINS CONSISTING OF PYRITE+ ZEOLITE(?)+A DARK GREEN ALTERATION FRESH TO SLIGHTLY N5 GRAY PLAG | PYX PYRITE | ZEOLITE comments : ID UNCERTAIN comments : A DARK GREEN ALTERATION MINERAL ALSO IN VEINS 61 462 A 78 1 0.0 976.00 976.00 977.36 WINDOM, K DIABASE PCE 1 (2-5), 2A (6-10), 2B (10-18), 2C (19-21), 2D (20-34), 2E (34-41), 2F (41-49), 2G (48-55), 3A (56-70), 3B (71-80), 3C (80-90), 4 (91-105), 5 (107-115), 6 (118-125), 7 (128-132) FINE-GRAINED DIABASE, SCATTERED AUGITE MICROPHENOS MEGASCOPICALLY HOMOGENEOUS, MANY FRACTURES LINED WITH A GREENISH BLACK COATING AND CALCITE CRYSTALS, SOME FRACTURES CONTAIN PYRITE SLIGHTLY COLOR IS N6 GRAY AUGITE comments : SCATTERED MICROPHENOS CALCITE | PYRITE 61 462 A 78 2 0.0 976.00 977.50 978.87 SEIFERT, K. DIABASE PCE 1A (2-11), 1B (12-18), 1C (19-22), 2A (25-35), 2B (35-50), 3 (52-65), 4 (67-70), 5 (71-81), 6 (84-92), 7A (95-108), 7B (108-117), 8 (120-135) PCES 1-4 ARE HOMOGENEOUSLY FINE-GRAINED, PCES 5-8 ARE SLIGHTLY COARSER-GRAINED, SCATTERED AUGITE MICROPHENOS SEVERAL FRACTURES LINED WITH A GREENISH BLACK COATING, SOME CALCITE AND PYRITE CRYSTALS ALONG THE FRACTURES, HOMOGENEOUSLY FINE-GRAINED SLIGHTLY COLOR IS N6 GRAY AUGITE comments : SCATTERED AUGITE MICROPHENOS CALCITE | PYRITE 61 462 A 78 3 0.0 976.00 979.00 980.45 SEIFERT, K. DIABASE PCE 1 (3-15), 2A (17-31), 2B (31-36), 3 (40-48), 4A (50-60), 4B (59-70), 4C (70-75), 5 (78-82), 6 (85-90), 7 (94-100), 8 (103-110), 9 (102-120), 10 (121-132), 11 (135-141) PCES 1-4B ARE HOMOGENEOUSLY MEDIUM-GRAINED, THE BOTTOM OF 4C BECOMES FINER GRAINED AND REMAINS FINE-GRAINED THROUGH PCE 11, SCATTERED AUGITE MICROPHENOS SEVERAL FRACTURES LINED WITH A GREENISH BLACK COATING-OFTEN WITH SLICKENSIDES, SOME CALCITE CRYSTALS ALONG FRACTURES SLIGHTLY COLOR IS N6 GRAY, PCES 2+4 HEAT TREATED DURING WRAPPING TO BE SAVED AUGITE comments : SCATTERED AUGITE MICROPHENOS CALCITE comments : GREENISH BLACK COATING LINING FRACTURES 61 462 A 79 1 0.0 985.00 985.00 986.46 VALLIER, T. COARSE BASALT OR MEDIUM-GRAINED DIABASE PCE 1A (3-9), 1B (5-25), 1C (24-32), 1D (32-48), 1E (49-54), 1F (53-60), 1G (63-72), 1H (76-82), 1I (82-91), 1J (91-102), 1K (102-113), 1L (113-125), 1M (122-133), 1N (134-145) COARSE BASALT OR MEDIUM-GRAINED DIABASE, HOMOGENEOUS IN GRAIN SIZE, SLIGHT GRAIN SIZE DECREASE POSSIBLE IN PCES 1E+1F BUT PROBABLY NOT ENOUGH TO SEPARATE INTO UNITS, SMALL MAFIC CLOTS APPEAR TO BE CPX MICROPHENOS VEINED WITH CALCITE+DARK GREEN MINERAL+PYRITE IN PCES 1A+1B+1F+1I+1J+1L, GREATLY FRACTURED AND JOINTED THROUGHOUT, HOMOGENEOUS IN GRAIN SIZE MOD PCES 1G+1H HEAT TREATED CPX comments : SMALL MAFIC CLOTS APPEAR TO BE CPX MICROPHENOS CALCITE | PYRITE comments : DARK GREEN MINERAL 61 462 A 79 2 0.0 985.00 986.50 988.00 VALLIER, T. COARSE BASALT OR MEDIUM-GRAINED DIABASE PCE 1 (4-14), 2A (15-27), 2C (40-50), 2D (48-57), 2E (57-67), 2F (65-70), 2G (72-80), 2H (79-87), 2I (87-100), 2J (96-105), 2K (104-110), 3 (112-120), 4A (120-130), 4B (130-150) COARSE BASALT OR MEDIUM-GRAINED DIABASE, HOMOGENEOUS IN GRAIN SIZE, DARK MAFIC MINERALS APPEAR TO BE MICROPHENOS RARE VEINS OF DARK GREEN MINERAL+CALCITE+PYRITE IN PCES 2B+2D+2H+3 SLIGHTLY HOMOGENEOUS IN COMPOSITION comments : DARK MAFIC MINERALS APPEAR TO BE MICROPHENOS CALCITE | PYRITE comments : DARK GREEN MINERAL IN VEIN 61 462 A 79 3 0.0 985.00 988.00 989.50 VALLIER, T. COARSE BASALT OR MEDIUM-GRAINED DIABASE PCE 1 (3-18), 2 (20-25), 3A (6-35), 3B (34-42), 3C (40-50), 3D (50-69), 3E (69-85), 3F (85-87), 3G (87-100), 3H (100-110), 3I (110-120), 3J (119-130), 3K (129-135), 3L (135-140), 3M (140-150) HOMOGENEOUS IN TEXTURE, PCE 1 MAY HAVE SLIGHTLY SMALLER OR FINER GRAIN SIZES THAN REMAINDER BUT DIFFERENCE IS NOT GREAT FRACTURED SURFACES ARE COATED WITH DARK GREENISH BLACK MINERAL AND SOME VEINS HAVE CALCITE+PYRITE ALONG WITH THE DARK GREENISH BLACK (CHLORITE?) MINERAL, PYRITE VEIN PARTICULARLY PROMINENT IN PCES 3H AND 3I SLIGHTLY RELATIVELY HOMOGENEOUS IN COMPOSITION comments : DARK GREENISH BLACK MINERAL COATING FRACTURE SURFACES, POSSIBLY CHLORITE | PYRITE | CALCITE 61 462 A 79 4 0.0 985.00 989.50 990.95 VALLIER, T. COARSE BASALT OR MEDIUM-GRAINED DIABASE PCE 1A (4-14), 1B (14-26), 1C (26-35), 1D (35-40), 1E (38-45), 1F (46-56), 1G (55-70), 1H (70-82), 1I (75-92), 1J (92-107), 1K (106-117), 1L (17-128), 1M (127-140) COARSE GRAINED BASALT OR MEDIUM-GRAINED DIABASE, HOMOGENEOUS GRAIN SIZE MOST JOINTS COVERED WITH THIN COATING OF DARK GREENISH BLACK MINERAL (CHLORITE?) AND CALCITE AND SOME PYRITE SLIGHTLY ROCK RELATIVELY HOMOGENEOUS MEGASCOPICALLY BOTH IN GRAIN SIZE AND COMPOSITION, PCES 1B+1G+1H+1I WERE HEAT TREATED comments : DARK GREENISH BLACK MINERAL COATING FRACTURE SURFACES, POSSIBLY CHLORITE | PYRITE | CALCITE 61 462 A 79 5 0.0 985.00 991.00 992.48 VALLIER, T. COARSE BASALT OR MEDIUM-GRAINED DIABASE PCE 1A (2-22), 1B (22-36), 1C (36-52), 1D (52-57), 1E (55-86), 1F (85-97), 1G (95-101), 1H (100-115), 1I (115-130), 1J (130-142) COARSE-GRAINED BASALT OR MEDIUM-GRAINED DIABASE, DECREASE IN GRAIN SIZE FROM TOP TO BOTTOM INDICATING PROBABLE BASE OF UNIT RARE VEINS OF CHLORITE(?)+CALCITE+PYRITE SLIGHTLY OVERLIES GRAYISH RED VOLCANIC CLAYSTONE-RED COLOR MAY BE CAUSED BY BAKING, COMPOSITION SEEMS RELATIVELY HOMOGENEOUS 61 462 A 79 6 0.0 985.00 992.50 992.66 SILTSTONE ALMOST ENTIRELY ALTERED TO CLAY (SMEC?) AND IS PROBABLY A DEVITRIFIED HYALOCLASTITE 61 462 A 80 2 0.0 994.00 995.50 996.60 SEIFERT, K. SEDIMENTS 61 462 A 80 2 110.0 994.00 996.60 997.00 SEIFERT, K. DIABASE PCE 2 (113-117), 3 (120-132), 4 (135-150) TOP OF PCE 2 IS FINE-GRAINED, INTERVAL (120-149) IS MEDIUM-GRAINED WITH SCATTERED AUGITE MICROPHENOS SEVERAL FRACTURES ARE PRESENT AND ARE COATED WITH USUAL GREENISH BLACK MATERIAL COLOR IS N6 GRAY AUGITE comments : SCATTERED AUGITE MICROPHENOS comments : GREENISH BLACK MATERIAL 61 462 A 80 3 0.0 994.00 997.00 998.50 SEIFERT, K. DIABASE PCE 1 (2-20), 2A (24-31), 2B (31-46), 2C (46-60), 2D (59-74), 2E (70-81), 3 (84-97), 4 (99-104), 5A (105-110), 5B (110-119), 6A (120-127), 6B (127-135), 7 (135-148) FINE-GRAINED SEVERAL FRACTURES, OFTEN HAVE CENTRAL PORTION FILLED WITH A DARK GREENISH BLACK MATERIAL THAT IS SURROUNDED BY A LIGHTER GREEN MATERIAL, WHITE CALCITE OCCASIONALLY OCCURS IN THE DARKER CENTRAL PART OF FRACTURES, MEGASCOPICALLY HOMOGENEOUS MOD PCE 2E HAS BEEN HEAT TREATED | COLOR IS N6 GRAY comments : DARK GREENISH BLACK MATERIAL SURROUNDED BY A LIGHTER GREEN MATERIAL IN VEINS | CALCITE comments : OCCASIONALLY OCCURS 61 462 A 80 4 0.0 994.00 998.50 998.90 SEIFERT, K. DIABASE PCE 1 (2-15), 2 (17-25), 3 (27-37) FINE-GRAINED, SCATTERED AUGITE MICROPHENOS RELATIVELY UNFRACTURED, FRACTURE SURFACES COATED WITH A GREENISH BLACK COATING AND FIBROUS MATERIAL, SOME POCKETS OF GLASSY MATERIAL ON THE FRACTURES AT THE TOP OF PCE 2, MEGASCOPICALLY HOMOGENEOUS MOD COLOR IS N6 GRAY, PCE 2 HAS BEEN HEAT TREATED AUGITE comments : SCATTERED MICROPHENOS comments : FRACTURE SURFACES COATED WITH A GREENISH BLACK COATING AND FIBEROUS MINERAL 61 462 A 81 1 0.0 998.00 998.00 999.50 WINDOM, K BASALT PCE 1 (2-8), 2 (10-15), 3A (17-27), 3B (27-35), 4A (40-55), 4B (55-70), 5A (70-80), 5B (80-90), 5C (85-100), 5D (100-107), 5E (107-110), 6A (112-120), 6B (121-123), 6C (122-126), 6D (126-136), 6E (135-141), 6F (142-145) SUBOPHITIC TO DIABASIC TEXTURE, NO TEXTURAL CHANGES OBSERVED OVER LENGTH OF SECTION MEGASCOPICALLY HOMOGENEOUS, SOMEWHAT FRACTURED, SOME FRACTURES FILLED WITH VEINS OF PYRITE+CALCITE+A DARK GREEN MATERIAL (CHLORITE?, SMECTITE?) FRESH TO SLIGHTLY COLOR IS N5 GRAY PLAG | PYX comments : INTERLOCKING PLAG AND PYX FORMING A SUBOPHITIC TO DIABASIC TEXTURE PYRITE | CALCITE comments : A DARK GREEN MATERIAL POSSIBLY CHLORITE OR SMEC 61 462 A 81 2 0.0 998.00 999.50 1001.00 WINDOM, K BASALT PCE 1A (4-20), 1B (20-27), 2 (30-34), 3A (36-47), 3B (45-59), 3C (60-69), 3D (70-85), 4A (100-115), 4B (115-133), 4C (134-150) SUBOPHITIC TO DIABASIC TEXTURE, NO TEXTURAL VARIATION WITHIN LENGTH OF SECTION MEGASCOPICALLY HOMOGENEOUS, SOME FRACTURING IN ROCK AND SOME OF THESE FRACTURES FILLED WITH PYRITE+ CALCITE+A DARK GREEN MATERIAL (CHLORITE?, SMEC?) FRESH TO SLIGHTLY COLOR IS N5 GRAY, PCE 4C HEATED IN SHRINK-TUBING FOR CUTTING PLAG | PYX CALCITE | PYRITE comments : A DARK GREEN MATERIAL POSSIBLY CHLORITE OR SMEC 61 462 A 81 3 0.0 998.00 1001.00 1001.87 WINDOM, K BASALT PCE 1A (3-10), 1B (10-15), 1C (16-30), 1D (30-47), 2A (50-67), 2B (68-83) SUBOPHITIC TO OPHITIC TEXTURE HOMOGENEOUS THROUGHOUT, PYRITE AND DARK MATERIAL FILL SOME OF THE FRACTURES IN THE ROCK FRESH TO SLIGHTLY COLOR IS N5 GRAY PLAG | PYX comments : PLAG AND PYX FORM SUBOPHITIC TO OPHITIC TEXTURE PYRITE comments : A DARK MATERIAL IN FRACTURES 61 462 A 82 1 0.0 1003.00 1003.00 1003.51 WINDOM, K BASALT PCE 1A (5-8), 1B (10-14), 1C (20-25), 2A (27-28), 2B (27-31), 3 (24-38), 4A (40-48) TEXTURALLY HOMOGENEOUS DIABASIC BASALT, APPARENT PSEUDOMORPHS AFTER OL PHENOS SET IN A SUBOPHITIC TO OPHITIC GNDMASS PYRITE AND A DARK GREEN MATERIAL LINE FRACTURE THAT SEPARATES PCES 4A+4B+4C FRESH TO SLIGHTLY CUTTINGS FROM HOLE CONTAINED IN INTERVAL (3-19) SURROUNDS BASALT PCES 1A AND 1B, COLOR IS N5 GRAY, PCE 4 IS ONLY ORIENTABLE SAMPLE RECOVERED OL comments : ALTERED PLAG | PYX comments : SUBOPHITIC TO OPHITIC TEXTURE PYRITE comments : DARK GREEN MATERIAL LINES FRACTURES 61 462 A 83 1 0.0 1004.00 1004.00 1004.13 SEIFERT, K. DIABASE PCE 1 (2-11) FINE-GRAINED HOMOGENEOUS DIABASE, NO PHENOS HOMOGENEOUS, NOT FRACTURED MOD COLOR N5 GRAY 61 462 A 84 1 0.0 1005.50 1005.50 1006.95 SEIFERT, K. DIABASE PCE 1 (2-6), 2 (8-31), 3 (34-53), 4A (55-66), 4B (66-80), 5 (82-95), 6A (98-115), 6B (115-142) FINE-GRAINED HOMOGENEOUS DIABASE, NO PHENOS HOMOGENEOUS, SOME SUBHORIZONTAL FRACTURES WITH GREENISH-BLACK COATINGS SLIGHTLY COLOR IS N5 GRAY 61 462 A 84 2 0.0 1005.50 1007.00 1008.18 SEIFERT, K. DIABASE PCE 1A (2-27), 1B (27-60), 1C (60-72), 2A (75-92), 2B (92-115) MEDIUM-GRAINED DIABASE, NO PHENOS MEGASCOPICALLY HOMOGENEOUS, SOME SUB-HORIZONTAL FRACTURES WITH A GREENISH-BLACK SURFACE COATING SLIGHTLY COLOR IS N5 GRAY 61 462 A 84 3 0.0 1005.50 1008.50 1009.94 SEIFERT, K. DIABASE PCE 1A (2-65), 1B (65-95), 1C (95-100), 1D (101-125), 1E (125-132), 1F (134-142) MOSTLY FINE-GRAINED DIABASE, POSSIBLY SOME BIOTITE SLICKENSIDES OCCURS OCCASIONALLY, SCATTERED COARSER GRAINED MAFIC MINERAL CONCENTRATIONS ARE MEDIUM-GRAINED FRACTURE SURFACES COATED WITH A GREENISH-BLACK COATING AND SOME CALCITE MOD COLOR IS N5 GRAY comments : SCATTERED COARSER MAFIC MINERAL CONCENTRATIONS CALCITE comments : COATING FRACTURE SURFACES | BIOTITE comments : POSSIBLE BIOTITE SLICKENSIDES 61 462 A 84 4 0.0 1005.50 1010.00 1011.27 SEIFERT, K. DIABASE PCE 1A (4-20), 1B (20-42), 1C (42-46), 1D (45-63), 2 (65-102), 3A (105-125), 3B (112-125) MOSTLY FINE-GRAINED DIABASE, SCATTERED COARSER GRAINED MAFIC MINERAL CONCENTRATIONS ARE MEDIUM- GRAINED FRACTURE SURFACES COATED WITH A GREENISH-BLACK MATERIAL THAN CONTAINS SCATTERED PYRITE MOD COLOR IS N5 GRAY PYRITE comments : FRACTURE SURFACES COATED WITH A GREENISH-BLACK MATERIAL 61 462 A 84 5 0.0 1005.50 1011.50 1012.91 WINDOM, K DIABASE PCES 1A (4-16), 1B (16-20), 1C (10-35), 1D (35-67), 1E (66-69), 2A (71-90), 3 (93-110), 4A (111-116), 4B (116-125), 5 (127-140) SUBOPHITIC TEXTURE FRACTURES ARE COMMONLY COATED WITH THIN LAYER OF DARK-GREEN CLAY LIKE MATERIAL, PCES 1A-1D CONTAIN SUB-HORIZONTAL LAYERS OF MAFIC MINERAL CONCENTRATIONS, REMAINDER OF SECTION APPEARS MEGASCOPICALLY HOMOGENEOUS FRESH TO SLIGHTLY N5 GRAY COLOR PLAG | PYX 61 462 A 84 6 0.0 1005.50 1013.00 1014.37 WINDOM, K BASALT(DIABASE) PCE 1A (5-10), 1B (10-35), 1C (35-43), 1D (43-58), 2 (60-67), 3A (69-86), 3B (86-100), 4 (102-107), 5A (110-126), 5B (127-135) SUBOPHITIC TEXTURE, GRAIN SIZE APPEARS TO BE FAIRLY UNIFORM THROUGHOUT SECTION SLIGHTLY FRACTURED AND LINED WITH DARK CLAY-LIKE MATERIAL FRESH TO SLIGHTLY COLOR=N5 GRAY comments : LOCAL CONCENTRATIONS OF MAFIC MINERALS OCCUR RANDOMLY THROUGHOUT comments : DARK GREEN CLAY-LIKE MATERIAL LINES FRACTURES 61 462 A 85 1 0.0 1014.50 1014.50 1015.90 WINDOM, K DIABASE PCE 1A (2-12), 1B (12-21), 1C (21-35), 1D (35-59), 2A (60-70), 2B (70-90), 3 (92-95), 4A (96-110), 4B (110-123), 4C (121-130), 4D (130-139) SUBOPHITIC TEXTURE, GRAIN SIZE APPEARS TO BE FAIRLY UNIFORM THROUGHOUT SECTION SLIGHTLY FRACTURED AND LINED WITH DARK CLAY-LIKE MATERIAL AND FILLED WITH PYRITE FRESH TO SLIGHTLY COLOR=N5 GRAY, PCES 1C+1D PUT IN HEAT-SHRINK PLASTICS FOR CUTTING 61 462 A 85 2 0.0 1014.50 1016.00 1017.43 WINDOM, K DIABASE PCE 1A (2-62), 1B (60-81), 1C (81-101), 1D (101-107), 1E (106-120), 1F (119-126), 2 (128-131), 3 (133-141) SUBOPHITIC TEXTURE, GRAIN SIZE GENERALLY UNIFORM THROUGHOUT SECTION SOMEWHAT FRACTURED, A LIGHT GREEN CLAY-LIKE MATERIAL FILLS SOME OF THE FRACTURES FRESH TO SLIGHTLY COLOR=N5 GRAY PYX | PLAG comments : A LIGHT GREEN CLAY-LIKE MATERIAL FILLS SOME OF THE FRACTURES 61 462 A 85 3 0.0 1014.50 1017.50 1018.97 WINDOM, K DIABASE PCE 1A (3-6), 1B (5-16), 2 (18-27), 3A (30-45), 3B (45-61), 3C (60-70), 3D (70-86), 3E (86-87), 3F (86-105), 4A (106-112), 4B (112-119), 5A (120-130), 5B (127-136), 5C (136-145) SUBOPHITIC TEXTURE, GRAIN SIZE IS GENERALLY UNIFORM THROUGHOUT DARK-GREEN CLAY-LIKE MATERIAL FILLS SOME OF THE FRACTURES FRESH TO SLIGHTLY COLOR IS N5 GRAY, PCES 3C(BAGGED RUBBLE)+5C+LOWER END OF PCE 3B WERE PUT IN HEAT-SHRINK TUBING FOR CUTTING PYX | PLAG 61 462 A 85 4 0.0 1014.50 1019.00 1020.45 WINDOM, K DIABASE PCE 1A (4-15), 1B (15-22), 1C (23-27), 1D (28-47), 2A (50-67), 2B (67-79), 2C (79-86), 2D (86-98), 3 (100-116), 4 (118-126), 5 (128-135), 6 (136-144) SUBOPHITIC, GRAIN SIZE IS UNIFORM THROUGHOUT LIGHT GREEN MATERIAL FILLS VEINS IN PCES 1A-1D AND 2A+2B FRESH TO SLIGHTLY COLOR IS N5 GRAY 61 462 A 85 5 0.0 1014.50 1020.50 1020.81 WINDOM, K DIABASE PCE 1 (4-10), 2A (12-20), 2B (20-30) SUBOPHITIC, UNIFORM TEXTURE THROUGHOUT FRESH TO SLIGHTLY 61 462 A 87 1 0.0 1026.00 1026.00 1027.48 SEIFERT, K. DIABASE PCE 1 (3-8), 2 (11-15), 3 (17-20), 4A (22-35), 4B (36-45), 5A (47-50), 5B (50-57), 6A (70-72), 6B (71-81), 6C (81-90), 6D (91-100), 6E (101-113), 7 (115-145) FINE-GRAINED DIABASE FRACTURES LINED WITH A GREENISH-BLACK COATING AND SOMETIMES IN SLICKENSIDES MOD COLOR IS N6 GRAY, MEGASCOPICALLY SIMILAR ROCK ALONG ENTIRE SECTION comments : MANY SMALL SCATTERED MAFIC MINERAL CONCENTRATIONS 61 462 A 87 2 0.0 1026.00 1027.50 1029.00 SEIFERT, K. DIABASE PCE 1A (4-15), 1B (15-25), 1C (26-27), 2A (30-39), 2B (40-48), 3A (50-56), 3B (50-56), 3C (57-60), 4A (61-70), 4B (70-78), 4C (79-91), 4D (92-100), 4E (100-117), 4F (111-128), 4G (128-140), 4H (139-146) FINE-GRAINED MOSTLY HOMOGENEOUS FRACTURES ARE COVERED WITH THE USUAL GREENISH-BLACK COATING, SOME PYRITE CRYSTALS ARE PRESENT ALONG THE FRACTURES, MEGASCOPICALLY HOMOGENEOUS MOD COLOR IS N5 GRAY comments : SCATTERED POORLY DEFINED MAFIC MINERAL CONCENTRATIONS PYRITE 61 462 A 88 1 0.0 1032.50 1032.50 1034.00 WINDOM, K DIABASE PCE 1 (4-7), 2A (10-21), 2B (22-26), 3A (28-30), 3B (32-33), 4A (35-50), 4B (49-57), 4C (52-70), 4D (69-77), 5A (80-95), 5B (95-116), 5C (116-128), 5D (129-135), 5C (135-148) SUBOPHITIC TEXTURE, GRAIN SIZE IS MEGASCOPICALLY UNIFORM NUMEROUS SUB-HORIZONTAL FRACTURES, MOST ARE FILLED WITH A DARK-GREEN CLAY-LIKE MATERIAL FRESH TO SLIGHTLY COLOR IS N5 GRAY 61 462 A 88 2 0.0 1032.50 1034.00 1035.40 WINDOM, K DIABASE PCE 1A (3-10), 1B (10-14), 1C (5-35), 1D (35-54), 1E (54-105), 1F (105-130), 1G (130-138) MOST OF SECTION EXHIBITS A SUBOPHITIC TEXTURE BUT SOME AREAS ARE COARSER GRAINED DARK-GREEN CLAY-LIKE MATERIAL FILLS MOST OF THE FRACTURES FRESH TO SLIGHTLY MAY BE MICROPEGMATITES BUT CONTACTS ARE ALL GRADATIONAL AND MAY SIMPLY REPRESENT LOCAL INHOMOGENEITIES IN ORIGINAL MAGMA 61 462 A 88 3 0.0 1032.50 1035.50 1037.00 WINDOM, K DIABASE PCE 1A (3-30), 1B (30-41), 2 (42-45), 3 (47-56), 4 (59-70), 5A (71-81), 5B (82-80), 5C (90-100), 6 (101-103), 7A (105-118), 7B (120-131), 7C (131-136), 7D (136-142), 7E (143-148) SUBOPHITIC, SOME AREAS ARE COARSER GRAINED THAN BULK OF ROCK FEW FRACTURES ARE PRESENT THAT ARE FILLED BY A DARK- GREEN CLAY-LIKE MATERIAL FRESH TO SLIGHTLY COLOR IS N5 GRAY, CONTACTS ARE GRADATIONAL AND MAY REPRESENT INHOMOGENEITIES IN ORIGINAL MAGMA OR POSSIBLY MICROPEGMATITES 61 462 A 88 4 0.0 1032.50 1037.00 1037.22 WINDOM, K DIABASE PCE 1A (4-12), 1B (13-20) UNIFORM SUBOPHITIC TEXTURE FRESH TO SLIGHTLY COLOR IS N5 GRAY 61 462 A 89 1 0.0 1036.50 1036.50 1037.97 WINDOM, K DIABASE PCE 1 (3-10), 2 (12-17), 3 (20-30), 4 (34-45), 5A (46-57), 5B (57-74), 6A (76-81), 6B (81-93), 7 (104-115), 8 (119-126), 9 (129-145) UNIFORM SUBOPHITIC TEXTURE THROUGHOUT SECTION FRESH TO SLIGHTLY COLOR=N5 GRAY 61 462 A 89 2 0.0 1036.50 1038.00 1039.50 WINDOM, K BASALT PCE 1 (4-20), 2A (23-27), 2B (28-42), 2C (42-50), 2D (50-56), 3 (48-61), 4 (63-66), 5 (69-75), 6A (77-86), 6B (87-95), 6C (95-101), 6D (102-113), 7 (115-125), 8A (128-140), 8B (140-146), 8C (147-150) SUBOPHITIC IN UPPER PART OF PCE 1 TO APHANITIC IN LOWER PART OF PCE 1 AND REMAINS FINE-GRAINED THROUGHOUT REST OF SECTION FRACTURING OF THE ROCK IS GREATER DOWN SECTION, THE FRACTURES ARE FILLED WITH PYRITE+ZEOLITE(?)+DARK GREEN CLAY-LIKE MATERIAL, PCE 3 APPEARS TO REPRESENT PART OF A LARGE VEIN THAT CONTAINS CALCITE AND A TRANSPARENT WHITE MINERAL TENTATIVELY IDENTIFIED AS THOMPSONITE(PARALLEL EXTINCTION, LOW BIREFRINGENCE,GOOD CLEAVAGE, RI APPROX. 1.51-1.53) FRESH TO MOD LOCAL PATCHES OF ZEOLITE(?) AND A DARK GREEN ALTERATION MINERAL OCCUR LOCALLY-ESPECIALLY IN PCE 2B PCES 2D+6A-6D+7+8A-8C PLACED IN HEAD-SHRINK TUBING FOR CUTTING comments : SMALL DARK GRAINS ARE PRESENT IN ROCK THAT APPEAR TO BE OL PSEUDOMORPHS | PYRITE | CALCITE | ZEOLITE comments : ID UNCERTAIN comments : A TRANSPARENT WHITE MINERAL TENTATIVELY IDENTIFIED AS THOMPSONITE 61 462 A 89 3 0.0 1036.50 1039.50 1040.88 WINDOM, K BASALT PCE 1A (2-11), 1B (13-22), 1C (24-30), 2 (32-35), 3A (36-39), 3B (40-42), 4 (45-47), 5A (50-55), 5B (55-62), 5C (62-72), 6 (74-77), 7 (80-85), 8 (86-90), 9A (93-100), 9B (100-107), 10A (117-127), 10B (129-136) TOP OF SECTION IS FINE-GRAINED GRADING TO COARSER GRAINED AT BOTTOM WHERE TEXTURE BECOMES SUBOPHITIC DEGREE OF FRACTURING SEEMS TO BE ASSOCIATED WITH GRAIN SIZE WITH THE FINE-GRAINED PORTIONS BEING THE MOST HIGHLY FRACTURED, MANY OF THE FRACTURES ARE FILLED WITH PYRITE+AN UNKNOWN WHITE MINERAL+A DARK GREEN MINERAL, A VERY DENSE-LOOKING (FINE-GRAINED) LIGHT GREEN MATERIAL IS PRESENT IN PCES 5A-5C FRESH TO SLIGHTLY COLOR IS N6 GRAY FOR THE FINE-GRAINED PORTIONS AND N5 GRAY FOR THE COARSE-GRAINED PORTIONS, PCES 5A-5C+ 9A-9C WERE PUT IN HEAT-SHRINK PLASTIC FOR CUTTING PYRITE comments : AN UNKNOWN WHITE MINERAL AND A DARK GREEN MINERAL 61 462 A 90 1 0.0 1041.50 1041.50 1043.00 VALLIER, T. BASALT PCE 1 (4-12), 2A (12-27), 2B (27-34), 3A (35-45), 3B (45-54), 3C (55-62), 4 (65-71), 5A (74-92), 5B (92-110), 5C (110-117), 6 (120-122), 7A (123-130), 7B (130-145), 7C (143-150) FINE TO MEDIUM-GRAINED FROM TOP TO BOTTOM GREATLY FRACTURED, SOME GREEN AND WHITE VEINS- CHLORITE+ZEOLITE, GREENISH BLACK VEINS AND JOINT COATINGS, SOME N8 VERY LIGHT GRAY VEINS, PYRITE VEIN AT 143CM MOD TOP OF COOLING UNIT NEAR TOP OF SECTION BECOMING COARSER GRAINED TOWARDS BASE | N5 MEDIUM GRAY, GREENISH BLACK VEINS ARE 5GY2/1 CHLORITE | ZEOLITE | PYRITE 61 462 A 90 2 0.0 1041.50 1043.00 1044.50 VALLIER, T. MEDIUM-GRAINED BASALT PCE 1A (2-11), 1B (11-20), 1C (20-35), 1D (35-40), 1E (37-49), 1F (49-55), 2A (56-65), 2B (65-72), 2C (72-800, 2D (82-87), 2E (88-95), 2F (95-100), 2G (100-110), 2H (110-120), 3A (122-135), 3B (135-146) MEDIUM-GRAINED 5GY2/1 GREENISH BLACK VEINS AND JOINT COATINGS, SOME COATINGS, SOME N8 VERY LIGHT GRAY VEINS, GREATLY FRACTURED MOD ALTERED AROUND JOINTS AND VEINS BASALT IS N5 MEDIUM GRAY comments : GREENISH BLACK CRYSTALS MAY BE REPLACED OL OR AUGITE PHENOS 61 462 A 90 3 0.0 1041.50 1044.50 1046.00 VALLIER, T. MEDIUM-GRAINED BASALT PCE 1A (2-15) 1B (14-27), 1C (27-36), 1D (35-45), 1E (45-55), 1F (56-65), 1G (65-75), 1H (74-90), 1I (90-95), 2A (97-119), 2B (117-130), 3 (130-142), 4 (144-147) MEDIUM-GRAINED FAIRLY HOMOGENEOUS THROUGHOUT SECTION, SOME VEINS FILLED WITH ZEOLITE+CHLORITE(?)+RARE PYRITE, MAJOR VEINS IN PCES 1B+1E+2A MOD ALTERED PARTICULARLY ALONG JOINTS BASALT IS N6 MEDIUM GRAY, DARK SEGREGATION(?) IN PCE 1G ZEOLITES | CHLORITE comments : ID UNCERTAIN | PYRITE comments : RARE 61 462 A 90 4 0.0 1041.50 1046.00 1047.44 VALLIER, T. MEDIUM-GRAINED BASALT PCE 1 (2-10), 2 (11-15), 3 (15-22), 4A (23-35), 4B (35-51), 4C (51-70), 4D (70-83), 4E (82-105), 5 (107-110), 6 (111-137) MEDIUM-GRAINED, FAIRLY HOMOGENEOUS IN GRAIN SIZE THROUGHOUT SECTION FRACTURED WITH VEINS FILLED WITH ZEOLITES+ CHLORITE(?)+PYRITE, PYRITE VEIN IN PCE 4A-4C, ZEOLITE VEINS IN PCE 5 MOD SALT COLOR IS N6 GRAY ZEOLITES | CHLORITE comments : ID UNCERTAIN | PYRITE 61 462 A 90 5 0.0 1041.50 1047.50 1048.43 VALLIER, T. MEDIUM-GRAINED BASALT PCE 1A (3-22), 1B (21-30), 1C (30-36), 2 (37-45), 3 (45-52), 4 (53-65), 5 (66-71), 6 (72-75), 7 (77-80), 8 (82-85), 9 (88-91) MEDIUM-GRAINED THROUGHOUT FRACTURED-HORIZONTAL JOINTS IN PCES 3+4, VEINS ARE PRESENT IN PCE 1 MOD ENTIRE CORE 90 SEEMS TO BE IN SAME FLOW OR INTRUSIVE UNIT, BASALT COLOR IS N6 MEDIUM GRAY 61 462 A 91 1 0.0 1050.50 1050.50 1050.60 VALLIER, T. MEDIUM-GRAINED BASALT PCE 1 (3-7) MEDIUM-GRAINED FRACTURED MOD BASALT COLOR IS N6, ONLY RECOVERY FROM CORE 91 61 462 A 92 1 0.0 1059.50 1059.50 1059.60 SEIFERT, K. DIABASE PCE 1 (3-8) MEDIUM-GRAINED FEW SUBPARALLEL FRACTURES MOD DIABASE COLOR IS N5 GRAY, ONLY ONE PCE RECOVERED FROM CORE 92 61 462 A B1 1 0.0 624.00 624.00 625.48 ROBINSON, P. T. MASSIVE BASALT SILL (DOLERITE)BIT CORE PCE NO PCE NUMBERS ASSIGNED RELATIVELY COARSE-GRAINED DOLERITIC ROCK, IN INTERVAL (20-30) IS PCE WITH THE COARSEST GRAIN SIZE, FEW (<1%) CPX PHENOS (1MM IN SIZE) MASSIVE BASALT SILL, VEIN MATERIAL NOT VISIBLE TO THE UNAIDED EYE SLIGHTLY ALTERATION IS NOT VISIBLE TO THE UNAIDED EYE NONE OF THE PCES ARE ORIENTED AND THEIR RELATIVE STRATIGRAPHIC POSITION IS NOT KNOWN EITHER CPX <1 1 comments : FEW CPX PHENOS 61 462 A B1 2 0.0 624.00 625.50 625.70 ROBINSON, P. T. CPX SPARSELY PHYRIC BASALTDOLERITECORE CATCHER SAMPLE OF BIT CORE PCE NO PCE NUMBERS ASSIGNED SPARSELY PHYRIC MASSIVE BASALT SILL, CALCITE-CHLORITE VEINS CPX 1 1 CALCITE comments : IN VEINS | CHLORITE comments : IN VEINS 61 462 A B2 1 0.0 690.00 690.00 691.07 TOKUYAMA, H. CPX-PLAG MICROPHYRIC BASALT (DOLERITE SILL) PCE 1 (1-6), 2 (10-16), 3 (20-27), 4 (30-37), 5 (40-45), 6 (48-51), 7 (56-60), 8 (64-78), 9 (80-92), 10 (95-105) GRAINED AND HOLOPILITIC, PCES 4-7 ARE MEDIUM-GRAINED AND ARE INTERSERTAL, PCE 8+10 ARE MEDIUM TO SLIGHTLY COARSE-GRAINED AND ARE INTERSERTAL TO INTERGRANULAR DOLERITE SILL WITH CHLORITE VEINS SLIGHTLY ORIENTATION AND STRATIGRAPHIC ORDER ARE NOT KNOWN FOR THE PCES RECOVERED CPX comments : MICROPHENOS | PLAG comments : MICROPHENOS CPX comments : MICROLITES | PLAG comments : MICROLITES | MAGN comments : MICROLITES, IN ADDITION PCES 1+2 ALSO HAVE MICROLITES OF PLAG CHLORITE 61 462 A X1 1 0.0 946.00 946.00 946.30 ROBINSON, P. T. BASALT AND DIABASE FRAGMENTS PCE 1 (0-30) 9 FRAGMENTS OF BASALTIC ROCK, 8 ARE MEDIUM-GRAINED DIABASE SIMILAR TO THAT OF CORE 73 AND ONE PCE IS FINE-GRAINED BASALT SIMILAR TO THAT OF CORE 72 NONE OF THESE PCES HAVE ORIENTATION OR STRATIGRAPHIC POSITION, THEY WERE COLLECTED IN TOOL FISHING OPERATION 61 462 A X1 1 3.0 946.00 946.03 946.43 ROBINSON, P. T. SEDIMENTARY ROCK PCE 2 (30-43) SMALL (0.5-2CM) PCES OF SEDIMENTARY ROCK