Archean Biosphere Drilling Project (ABDP)
ABDP CORE #1 LOG TABLE
(entire data table can be downloaded at left)
| ABDP#1 | LOGGED BY: OHMOTO | DATE:6/11/03-6/20/03 |
| DEPTH | LITHOLOGY | COMMENTS |
| 1 | High mag basalt green | Boulder? |
| 2 | 1.4m contact | |
| 3 | Mud brown | |
| 4 | bs | 3.2-3.8 qz md |
| 5 | bs | 4.2-4.5:breccia |
| E.O.T.#1 (0.0-5.0) | ||
| 6 | hydrothermally altered basalt green/red | 5.4-5.5: Brecciated greenstone w/sericite/ |
| 7 | same | chlorite alteration/hematization |
| 8 | same | 6.5-7.3m -mud |
| 9 | same | 7.5-8m-mud |
| E.O.T.#2 (5.0-9.8) | ||
| 10 | tuff or lava? Green and red | chlorite silicified bs w/ disseminated hm |
| 11 | 12.9-13.0: powdery | |
| 12 | 13.3- 13.7: gradual increase in SiO2 | |
| 13 | silicified lava(?) or tuff? | 13.75: 3cm jasper |
| white, red, black, gray | 13.95: 4cm black chert | |
| 14 | 14.1: 10cm grey chert | |
| 15 | same | |
| 16 | same | disseminated hm in white background |
| E.O.T. #3 (9.8-16.6) | ||
| 17 | same | 17.7- 17.8: argilite zone (modern weathering) |
| 18 | Sericitized chlorite/silicified bs | 17.9-18.65: argillized |
| 19 | green/ gray | |
| 20 | chert white grey | 20.6-20.9: chert |
| 21 | sericite/chl/py altered bs white/green | sericite |
| 22 | High mag basalt greenish | sericite/chlorite altered |
| E.O.T.#4 (16.6-22.9) | ||
| 23 | chloritized bs | chlorite |
| 24 | 23.9-25.3: hematized (goethite) zone | |
| 25 | ||
| 26 | chlorite rich basalt | 26.7-26.9: variolithic texture |
| 27 | 27.6-27.8: same | |
| 28 | 28.75-29.5 goethite/hematite | zebra texture |
| 29 | ||
| 30 | 30.45-30.85: motled red/chlorite | |
| E.O.T.#5 (22.9-30.0) | ||
| 31 | 30.85-31.3: chlorite | |
| 32 | 31.3-32.3: motled | |
| 32.3 | ||
| chlorite | ||
| 34.1 | ||
| motled | ||
| 34.8 | ||
| motled/chlorite rich alteration | ||
| 36.5 | ||
| laterite | ||
| 37.1 | E.O.T.#6 (30.0-37.1) | |
| motled goethite/hematite | ||
| 38 | ||
| chloritized (Mg-rich) bs with sericite | 38.6-38.65: hematite enriched fracture | |
| 41.95 | 41.8-41.9: hematite enriched fracture | |
| massive basalt pale green | ||
| 44.4 | E.O.T.#7 (37.1-44.4) | 44.4-44.5, 44.8: hm rich along fractures |
| 47.2 | 44.9, 45.5, 45.85, 46.0-46.2: same | |
| chlorite/sericite, high Mg basalt | 46.9-47.2: hm-rich | |
| 49 | 47.9-48.1: same | |
| massive chert (dark color) | ||
| 50.2 | ||
| chloritized basalt | quartz viens (1-15mm) mostly parelel beds | |
| 51.2 | ~cm banding ~40degree vs. core direction | |
| banded chert white/gray | ||
| 51.6 | E.O.T.#8 (44.4-51.6) | |
| banded chert | ||
| 51.8 | ||
| black | ||
| 51.9 | ||
| white | ||
| 52 | ||
| black | ||
| 52.1 | ||
| 52.85 | 2cm brecciated bed | |
| 53.6 | ||
| breciated bed | ||
| 54.1 | ||
| black chert | ||
| 55.25 | ||
| disturbed bed | ||
| 55.3 | ||
| black | ||
| 55.7 | ||
| pale green, siderite rich | ||
| 56.1 | ||
| 56.3 | disturbed bed | |
| 56.4 | black, pyrite | orientation measurement :230, 50 degreees |
| 57.1 | ||
| black, pyrite-rich | ||
| 57.8 | ||
| white chert dominated | ||
| 58.6 | ||
| 58.74 | E.O.T.#9 (51.6-58.6) | |
| black chert, pyrite rich band (0.5cm) | ||
| 58.8 | ||
| banded chert, breciated some siderite | ||
| 59.1 | ||
| siderite rich organic layers greenish | ~10 cm interval | |
| 59.6 | ||
| bedded chert black white | ||
| 60.1 | ||
| bedded chert black white | ~1 cm interval | |
| 60.7 | chert dike black | 1-2 cm |
| siderite rich, massive | ||
| 61.1 | ||
| breciated banded chert black/white | 61.75-62.15:late stage quartz vien ~1cm | |
| 62.15 | ||
| bedded chert black/white | mostly white (~1cm) w/black (~5mm) | |
| 62.45 | ||
| hemmatite rich bedded chert black | late stage quartz vien, hematite younger | |
| 62.6 | ||
| banded chert mostly white some black | white (~2cm) black (~1-2cm) | |
| 63.1 | 62.8: hematite in fracture (younger) | |
| banded chert mostly black | goethite paralell to bedding | |
| 63.5 | ||
| white chert is minor | 63.35: mm thick jasper | |
| 63.8 | 63.7: goethite rich | |
| banded chert (thick- black ~1-8cm) | ||
| 64 | ||
| banded chert: white/pinkish white | ||
| 64.6 | ||
| black chert in later agate vein ~.5cm | ||
| 64.8 | ||
| banded chert: black dominant | 64.8-64.95: goethite rich | |
| 65.4 | 65.1-65.2: same | |
| 65.41 | E.O.T.#10 (58.7-65.4) | 65.4: goethite rich |
| 65.55 | ||
| banded chert white dom.(2-7cm bands) | 65.75 goethite in fracture | |
| 66 | ||
| massive black chert w/ spect of white | 66.15 goethite rich | |
| 66.3 | ||
| well banded 5mm goethiterich band | ||
| 66.35 | ||
| banded chert-black dom. (~2cm) | pinkish fragments (~1cm) | |
| 66.75 | ||
| massive goethite-rich siderite? | ||
| 67 | ||
| banded chert ~1cm black/white | 68.9-69.3:massive green and pink chert | |
| 70.7 | ||
| core loss-all pieces labeled as 71.0 | ||
| 71.3 | goethite-rich white cherts | |
| white bedded chert and qz vein | pink jasper in quartz | |
| 71.6 | ||
| white cherts with pink layers (5mm) | 71.7-72.0: yellowish chert | |
| 72.3 | 72.05:10cm black, pink and yellow | |
| black/white bedded chert ~cm interval | abundant intralayer frags of white chert | |
| 74 | E.O.T.#11 (65.6-74.0) | patchy zones of pink and yellow |
| black and white banded chert. | 74.1-75.1;75.3-75.5;79.4-79.7:black dom | |
| 75.2; 75.5; 75.7: jasper beds ~1-5cm | ||
| 75.75: dark brown beds | ||
| 80.9 | E.O.T.#12 (74-80.9) | |
| massive black chert (T-chert) | 81.0-81.2; 84.1-84.7; 85.1-85.3; 85.7-87.6 | |
| brecciated frags of white bedded chert | ||
| 87.7 | E.O.T.#13 (80.9-87.7) | |
| black massive chert | ||
| 90 | ||
| basaltic tuffaceous chert, greenish | network of quartz veins (~5mm) | |
| 90.6 | ||
| black massive chert | ||
| 91.3 | ||
| basaltic tuffaceous chert, greenish | network of quartz veins | |
| 92.6 | ||
| black chert with agate veins~1cm | brecciated white chert frags (rounded/angular) | |
| 94.6 | E.O.T.#14 (87.7-94.6) | |
| massive black chert | 94.9: 5cm qz vein | |
| 96.6: 10cm qz veins | ||
| 97.2: fragment of white chert | ||
| 97.4-97.6: agate vein with pyrite | ||
| 98.1 | ||
| basaltic tuff-rich chert greenish | minor quarzt network ~1cm | |
| 100.4 | ||
| massive black chert | 100.7-101.8: agate veins brecciated black chert | |
| 101.8 | E.O.T.#15 (94.7-101.8) | |
| fragmented black chert | 102.1-102.3: black fragment | |
| 102.7 | ||
| 104.1-104.3: black chert dike (T-chert) | ||
| 107.1-107.3: black chert dike | ||
| 108.1-108.25: black chert | ||
| 108.3-108.5: fracture zone. Hematized. Young | ||
| 109.1 | E.O.T. #16 (101.8-109.1) | |
| grayish tuffaceous chert | black veins (mm to cm) | |
| 109.6 | ||
| mostly massive black chert | frags of white and gray chert (cm-10cm) | |
| 114.6 | ||
| grey bedded chert | ||
| 116.3 | E.O.T.#17 (109.1-116.3) | |
| grey chert | 117.2-117.6: white chert frags 1cm-5cm | |
| 119.8 | ||
| increasing whiteness | ||
| 120.7 | ||
| JASPER | microbanded ~mm mesoband ~1cm to 7cm | |
| 121.75 | 121.9; 122.9; 123.3: 5mm jasper frag | |
| white cherts | ||
| 123.4 | E.O.T.#18 (116.3-123.4) | |
| white x-line chert | 124.3; 124.5: gray chert fragment | |
| 124.8 | ||
| mm size microband cm mesoband red | 125.1-125.2: greyish chert and jasper | |
| 125.2 | ||
| white clear chert with light grey | banding not clear | |
| 126.05 | ||
| chert red white | 1mm to 3cm | |
| 129 | ||
| chert white w/greenand yellow | siderite rich? (~5mm thick) | |
| 129.8 | ||
| white chert with grey network | (<mm) | |
| 130.5 | E.O.T.#19 (123.4-130.5) | |
| white chert | 130.7-130.95: pink and green bandsmm-3cm | |
| 133.1 | 131.7-131.8:pink and grey bands mm-cm | |
| brecciated white chert in grey matrix | 131.9-132.35 red and grey bands mm-5cm | |
| 132.9: pink | ||
| 136 | 135.45: green | |
| 137.1 | ||
| black chert | ||
| 137.4 | ||
| 137.8- 137.9: yellow/green | ||
| 138 | E.O.T.#20 (1130.5-138.0) | |
| white chert | 138.25:green/pink/yellow ~2cm | |
| 138.45:jasper 1cm | ||
| 139.4: 2cm jasper | ||
| 140: jasper | ||
| 140.8 | 140.3: jasper | |
| jasper | 140.35: jasper | |
| 141.1 | 140.45: jasper | |
| mostly white/grey banded cherts | 141.2: jasper | |
| 141.65 | 141.4: jasper | |
| jasper | 141.55: jasper | |
| 141.95 | 141.6: jasper | |
| white chert | 142.25: jasper | |
| 142.4 | 142.3: jasper | |
| jasper | 142.8: jasper 3cm | |
| 142.5 | 143.5- 143.7: black chert | |
| white chert | 143.7: jasper 5cm | |
| 145.4 | E.O.T.#21 (138.0-145.4) | |
| white chert in grey bands | ||
| 145.5 | 148.2: 8cm jasper frag | |
| grey chert in white bands | 148.0: 3cm qz vein | |
| 145.9 | 148.6: 3cm qz vein | |
| banded chert, white grey/black/red | 148.9: 3cm qz vein | |
| 149.25 | ||
| jasper | 149.25: jasper | |
| 150.2 | 149.5-149.55: jasper | |
| white chert with light grey bands | 149.85: jasper | |
| 150.0: jasper | ||
| 150.1: jasper | ||
| 150.2: jasper | ||
| 151.0: jasper and qz vein | ||
| 151.5 | E.O.T.#22 (145.4-151.5) | |
| white chert with light grey bands | note:155.4-158.4: orientation is reversed | |
| 153.4 | ||
| white chert light grey and pinkish yellow | 153.5: recent fault zone 10cm yellowish brown | |
| 154 | ||
| banded jasper/black/white 1-5 cm | 154.45 dip 64 degrees | |
| 154.7 | ||
| banded chert white/pale grey .5-1cm | ||
| 155.6 | ||
| jasper/blk white | ||
| 155.7 | ||
| white yellow light green clasts | bedding not clear | |
| 156.4 | ||
| jasper/blk/white bands mm-cm | ||
| 156.5 | ||
| white chert (w/ light grey beds) | 157.8-158.0 bedded | |
| 158.4 | E.O.T.#23 (151.5-158.4) | |
| banded blk/wht/red chert well bedded | 158.6-158.7; 159.2-159.4; 159.5-159.63 bedde | |
| 160.4 | 159.4; 159.8; 160.2-.3: red jasper | |
| broken pieces banded chert | blk/wht/green/yellow | |
| 160.7 | 159.6: irregular jasper and white chert contact | |
| broken pieces white chert w/grey bands | ||
| 161.3 | ||
| white chert with grey network | ||
| 162.1 | 162.1: 5cm jasper | |
| alternating zones of white chert | 162.25: 5cm162.25 | |
| well bedded blk/grey/red white | 162.7: 7cm | |
| 162.8-162.9: 10cm | ||
| 163.2-163.3: 3bands | ||
| 163.6-163.7: | ||
| 163.9: 9cm | ||
| 164.1: 10cm | ||
| 164.3-164.4 | ||
| 164.3 | E.O.T.#24 (158.4-164.3) | |
| banded jasper/blk/wht/ chrt | 164.45: 5cm jasper | |
| 164.8 | ||
| white dominant frags of grey/blk/yellow | 165.2: 3cm jasper/blk/wht | |
| 166.2 | ||
| banded jasper/blk/yellow/wht | 166.5; 166.75; 166.95: jasper | |
| 166.7 | ||
| white chert in frags of jasper | ||
| 167.7 | ||
| white grey cherts | abundand frags of black and jasper | |
| 168.1 | ||
| white grey cherts | ||
| 168.4 | ||
| banded Blk/jasper | quartz veins ~5mm | |
| 168.65 | ||
| white qz in grey chert | ||
| 169 | ||
| grey white bands. Qz veins | ||
| 169.3 | ||
| banded jasper mm-5mm | ||
| 169.9 | ||
| white/yellow/ chert w/ breccias | black and red cherts | |
| 170.3 | ||
| 171.2 | E.O.T.#25 (164.3-171.2) | |
| white chert w light grey network | ||
| 171.7 | ||
| banded blk/green/red/wht 5mm~2cm | 171.9-172.0; 173.2-173.55; 176.9-177.2: red | |
| 178.2 | E.O.T.#26 (171.2-178.2) | |
| banded blk/green/red/wht 5mm~2cm | 180.2: 20cm jasper | |
| 182.3 | 181.3-181.5: jasper | |
| white chert in light grey bands | 180.4: dip 45 degreees | |
| 184.2: 10cm frag of blk/wht/banded chert | ||
| 184.8; 185.15: agate | ||
| 185.2 | E.O.T.#27 (178.2-185.2) | |
| White chert w/ frags of blk/ pink clasts | 185.3: 5cm bedded black/wht red | |
| 186.2 | 185.6: 5cm bedded | |
| bedded blk/red/wht. Blk/red dom~5mm | 185.9: 5cm | |
| 188.8 | 186.2: pink/grey chert cross cutting black | |
| 189.1 | parralel fault, argillite zone | yellowish white, light green cross cutting fault |
| hematized basalt | ||
| 189.2 | ||
| chloritized bs | ||
| 190.2 | ||
| hematized basalt | networks of chlorite veins 1-5mm | |
| 190.5 | ||
| chloritized bs | ||
| 191.7 | E.O.T.#28 (185.2-191.7) | |
| greenish basalt | 192.1 and 192.3: thin red fractures | |
| 192.7 | 192.7; 192.83; 193.8; 193.95: hem | |
| hematized chloritic bs | 192.7; 192.95; 193.3; 193.5; 193.7: qz, py vein | |
| 194.8 | network of hem and chl cross cutting veins | |
| 194.75-194.8: qz veining hematite rich zone | ||
| 194.8: contact between red bs and black chert | ||
| it appears bs intruded chert | ||
| banded blk/white/chert (5mm-1cm) | ||
| brecciated zone 195.1-195.6 | ||
| modern weathering goethite along chert beds | ||
| 195.75; 195.85; 195.9; 196.1; 196.7; 197.0; | ||
| 197.4: qz veins | ||
| 195.8, 197.8-198.1: jasper | ||
| 198.1 | E.O.T.#29 (191.7-198.1) | |
| banded blk/wht | modern weathering"leaching" and "decolouring" | |
| 202.6-203.2: brecciated cherts with qz veins | ||
| 200.7-200.9: fragmented by drilling | ||
| 203.8 | jasper | pink porous bands (alterd siderite) |
| 204 | E.O.T.#30 (198.1-204) | |
| banded chert blk/wht/red/grn | affected by moderate weathering | |
| 205.7 | ||
| 5cm containingqz fragments (basalt) | thrust contact? | |
| 205.8 | 205.8;205.8-209.1;209.5-209.7;210.5; | |
| 210.6-210.9:hem rich | ||
| chloritized basalts | 208.8: qz viens | |
| 210.9 | E.O.T.#31 (204-210.9) | |
| chloritized basalts | 211.0-212.4: hem rich | |
| 212.7 (5mm); 213.4 (7mm); hem rich | ||
| 213.45; 215.55 (10cm); 213.8 (5mm); | ||
| 213.9; hem rich | ||
| 214.1-214.25: rich hem (thick) | ||
| 214.3 (1cm) hem rich | ||
| 216.5-216.65 thick hem rich | ||
| 216.7 (5cm) hem rich | ||
| 217.7: qz vein | ||
| 212.4-212.6: qz vien net work | ||
| 218.1 | E.O.T.#32 (210.9-218.1) | |
| chloritized basalt | 220.8-221.5:hem rich | |
| 221.8-221.9: hem rich | ||
| 222.1 (5mm) | ||
| 222.35 (7mm) | ||
| 223.5: argillite zone | 222.5 (1cm) | |
| 222.8 (1cm) | ||
| 222.9 (5mmx2) | ||
| 223.2 (5mm) | ||
| 223.4 (5cm-disseminated) | ||
| 224.1: hem rich | ||
| 224.45: (5mm) | ||
| 224.6 (2 cm) | ||
| 221.4 (2cm) qz vein | ||
| 221.5 (0.5) qz vein | ||
| 221.8 same | ||
| 222.7 same | ||
| 222.8 same | ||
| 222.95 same | ||
| 223 same | ||
| 224.5 | E.O.T.#33 (218.1-224.5) | |
| chloritized basalt | 224.7 hem rich | |
| 224.8 same | ||
| 224.9 same | ||
| 225.35same | ||
| 226.4 thick hem rich | ||
| 226.8 hem rich | ||
| 227.8 hem rich | ||
| 228.7 | ||
| highly hematized basalt | 225.5, 225.9, 226, 226.7, 227.2, 227.5, | |
| 227.55, 227.7, 227,75, 227.95, 228.1, | ||
| 228.45, 228.5, 229.0: Qz Veins | ||
| 232.1 | E.O.T.#34 (224.5-232.1) | |
| strongly hematized basalt | ||
| 235.5 | ||
| transition zone chloritized bs. | ||
| 235.85 | ||
| chloritized basalt w/ frags of chert | ||
| 238 | ||
| greenish grey banded chert | ||
| 238.8 | E.O.T.#35 (232.1-238.8) | |
| gren/grey/white chert | ||
| 239.2 | ||
| greenish basalt | ||
| 240.5 | ||
| coarse grained basalt | ||
| 240.8 | ||
| greenish basalt | ||
| 242.5 | ||
| coarse grained dolerite? Greenish | ||
| 246 | E.O.T.#36 (238.8-246) | |
| coarse grained greenish dolerite | 246.1-248.5: weekly hematized (modern) | |
| 253.1 | E.O.T.#37 (246-253.1) | |
| coarse grained dolerite | with chlorite qz vains | |
| 259.8 | ||
| green baslat | ||
| 260.2 | E.O.T.#38 (253.1-260.2) | |
| green basalt coarse | 263.6 qz xls | |
| 264 | E.O.H.#39 (260.2-264) |
