Table T6. Structural data, Hole 1178A.
|
Core,
section,
interval (cm) |
Depth (mbsf)
|
Cr az. (°)
|
Cr dip (°)
|
Pm
az.
|
Pm plunge
|
Identifier
|
Notes
|
|---|---|---|---|---|---|---|---|
| 190-1178A- | |||||||
| 1H | 0 | ||||||
| 2H | 2.90 | 0 | 0 | Bedding | |||
| 3H | 12.40 | 0 | 0 | Bedding | |||
| 4H-6, 31-35 | 28.71 | 335 | 30 | 299 | 30 | Bedding | |
| 4H-7, 20-21 | 30.10 | 299 | 22 | 263 | 22 | Bedding | |
| 4H-7, 69-70 | 30.59 | 274 | 52 | 238 | 52 | Bedding | |
| 5H-2, 50-63 | 33.40 | 160 | 62 | 246 | 62 | Bedding | |
| 5H-3, 68-72 | 35.08 | 154 | 35 | 240 | 35 | Bedding | |
| 5H-3, 110-115 | 35.50 | 183 | 36 | 269 | 36 | Bedding | |
| 5H-4, 123-130 | 37.13 | 165 | 51 | 251 | 51 | Bedding | |
| 5H-6, 99-101 | 39.89 | 286 | 42 | 12 | 42 | Bedding | |
| 5H-7, 63-80 | 41.03 | Fold | In ash layer | ||||
| 6H-2, 50-60 | 42.90 | 20 | 74 | 108 | 74 | Bedding | |
| 6H-3, 50-65 | 44.40 | 15 | 61 | 103 | 61 | Bedding | |
| 6H-4, 65-73 | 46.05 | 20 | 54 | 108 | 54 | Bedding | |
| 6H-5, 60-73 | 47.50 | 356 | 64 | 84 | 64 | Bedding | |
| 6H-5, 139-145 | 48.29 | 14 | 61 | 102 | 61 | Bedding | |
| 7H-2, 144-148 | 53.34 | 325 | 45 | 71 | 45 | Bedding | |
| 7H-2, 65-67 | 52.55 | 0 | 14 | 106 | 14 | Bedding | |
| 7H-4, 135-137 | 56.25 | 0 | 8 | 106 | 8 | Bedding | |
| 7H-4, 49-72 | 55.39 | Fold? | Possibly core induced | ||||
| 8H-3, 69-72 | 61.19 | 301 | 39 | 261 | 39 | Bedding | |
| 8H-2, 106-106 | 60.06 | 0 | 90 | Bedding | |||
| 8H-4, 33-40 | 62.33 | Fold | |||||
| 8H-5, 110-120 | 64.60 | Fold? | Possibly core induced | ||||
| 9X | 65.60 | No structures | |||||
| 10X | Empty core | ||||||
| 11X | 84.80 | Highly biscuited | |||||
| 12X-1, 1-140 | 94.41 | Comminuted biscuited material | |||||
| 12X-2, 6-50 | 95.87 | Bedding | Vertical with some horizontal axis folds | ||||
| 12X-3, 37-41 | 97.68 | 58 | 66 | Bedding | Small biscuit size, reorientation not possible | ||
| 12X-4, 20-21 | 99.01 | 0 | 0 | Bedding | |||
| 12X-5, 4-47 | 100.35 | 15 | 48 | Bedding | Fissility and/or lamination | ||
| 12X-6, 45-54 | 102.26 | 331 | 47 | Bedding | Fissility and/or lamination | ||
| 12X-6, 62-64 | 102.43 | 126 | 18 | Bedding | Fissility and/or lamination | ||
| 13X-3, 38-41 | 107.38 | Bedding | Fissility and/or lamination | ||||
| 13X-4 | 108.50 | Highly broken core, drilling induced | |||||
| 13X-5 | 110.00 | Highly broken core, drilling induced | |||||
| 13X-6, 85-97 | 112.35 | 33 | 65 | Bedding | |||
| 14X-3, 34-35 | 116.94 | 0 | 0 | Bedding | Fissility and/or lamination | ||
| 14X-4, 81-82 | 118.91 | 28 | 20 | Bedding | Fissility and/or lamination | ||
| 14X-6, 57-59 | 121.67 | 326 | 36 | Bedding | Fissility and/or lamination | ||
| 15X-3, 65-70 | 126.85 | 329 | 77 | Bedding | Fissility and/or lamination | ||
| 15X-3, 52-57 | 126.72 | 118 | 81 | Bedding | Fissility and/or lamination | ||
| 15X-5, 35-37 | 129.55 | 5 | 86 | Bedding | Fissility and/or lamination | ||
| 16X-2, 52-53 | 134.72 | 0 | 0 | Bedding | Highly biscuited | ||
| 17X | 142.20 | 0 | 0 | Bedding | Highly biscuited | ||
| 18X | 151.80 | Highly biscuited | |||||
| 19X | 161.40 | Highly biscuited | |||||
| 20X | 171.00 | Highly biscuited | |||||
| 20X-2, 108-110 | 172.42 | 175 | 45 | 150 | 45 | Black seam | (106-112) |
| 20X-2, 108-110 | 172.42 | 162 | 36 | 137 | 36 | Black seam | (106-112) |
| 20X-2, 108-110 | 172.42 | 238 | 60 | 213 | 60 | Bedding | Zoophycos (106-112) |
| 20X-2, 113-118 | 172.47 | 230 | 62 | 205 | 62 | Bedding | Zoophycos (113-118) |
| 20X-4, 101-103 | 175.35 | 232 | 45 | 224 | 45 | Normal fault | 3- to 4-mm offset (97-104) |
| 20X-4, 100-103 | 175.34 | 333 | 38 | 325 | 38 | Bedding | Zoophycos (97-104) |
| 20X-4, 101-102 | 175.35 | Black seam | (97-104) | ||||
| 21X-5, 53-53 | 186.93 | 273 | 50 | 50 | Bedding | Zoophycos (51-55) | |
| 21X-6, 45-45 | 188.35 | 270 | 3 | 3 | Black seam | (45-49) | |
| 22X-1, 131-135 | 191.11 | 330 | 87 | 87 | Fault | 2-mm displacement (131-135) | |
| 22X-1, 54-57 | 190.34 | 90 | 90 | 30 | 90 | Fault | >20-mm displacement (57-64) |
| 22X-1, 54-57 | 190.34 | 150 | 42 | 90 | 42 | Bedding | Zoophycos (57-64) |
| 22X-2, 59-66 | 191.89 | 90 | 90 | 65 | 90 | Fault | >2-mm displacement (59-66) |
| 22X-2, 59-66 | 191.89 | 240 | 63 | 215 | 63 | Fault or fracture | (59-66) |
| 22X-2, 104-107 | 192.34 | 311 | 29 | 243 | 29 | Fault | >20-mm displacement (102-107) |
| 22X-2, 110-110 | 192.40 | 264 | 44 | 222 | 44 | Black seam | (108-113) |
| 22X-3, 0-62 | 192.80 | Brecciated zone | |||||
| 23X | 199.20 | 0 | 0 | 0 | Bedding | Highly broken silt layers | |
| 23X-1, 35-40 | 199.55 | Black seam | Subvertical | ||||
| 24X | 208.80 | 0 | 0 | 0 | Bedding | Highly broken silt layers | |
| 25X | 218.40 | 0 | 0 | 0 | Bedding | Highly broken silt layers | |
| 26X | 228.10 | 0 | 0 | 0 | Bedding | ||
| 26X-1, 0-53 | 228.10 | Soft sediment deformation | Possibly liquefaction and/or drilling disturbance | ||||
| 27X-3, 33-35 | 241.13 | 317 | 28 | 117 | 28 | Bedding | |
| 27X-4, 101-103 | 243.31 | 90 | 63 | 63 | Fault | Apparent orientation only | |
| 27X-4, 101-105 | 243.31 | 0 | 5 | 5 | Bedding | Slightly kinked | |
| 27X-6, 101-105 | 246.31 | 180 | 30 | 30 | Bedding | ||
| 27X-6, 105-108 | 246.35 | 21 | 45 | 45 | Fracture | ||
| 27X-7, 15-19 | 246.75 | 219 | 31 | 31 | Bedding | ||
| 28X-4, 8-10 | 251.98 | 313 | 36 | 305 | 36 | Bedding | |
| 28X-4, 60-61 | 252.50 | 105 | 29 | 227 | 29 | Bedding | |
| 28X-6, 57-59 | 255.47 | 341 | 35 | 35 | Bedding | ||
| 29X | 257.00 | Biscuited massive silty clay | |||||
| 30X-3, 96-98 | 270.16 | 0 | 17 | 315 | 17 | Bedding | |
| 30X-4, 103-106 | 271.73 | 330 | 23 | 23 | Bedding | ||
| 30X-5, 15-18 | 272.35 | 314 | 35 | 56 | 35 | Bedding | |
| 30X-5, 25-27 | 272.45 | 323 | 16 | 16 | Bedding | ||
| 30X-5, 71-74 | 272.91 | 306 | 32 | 32 | Bedding | ||
| 31X-1 | 276.20 | ||||||
| 31X-2, 92-96 | 278.62 | 8 | 26 | 26 | Bedding | ||
| 31X-3, 66-70 | 279.86 | 205 | 19 | 19 | Bedding | ||
| 31X-4, 54-63 | 281.24 | 346 | 31 | 196 | 31 | Bedding | Bedding with parallel fissility |
| 31X-5, 14-22 | 282.24 | Fractures | Irregular hairline fractures, drilling induced? | ||||
| 32X-1, 35-37 | 286.25 | 33 | 14 | 14 | Bedding | ||
| 32X-1, 83-84 | 286.73 | 240 | 8 | 8 | Bedding | ||
| 32X-2 | 287.40 | Irregular arrays of hairline fracture inside biscuits | |||||
| 32X-3, 22-29 | 288.57 | 303 | 37 | 37 | Bedding | Parallel fissility | |
| 32X-3, 138-143 | 289.73 | 304 | 30 | 30 | Bedding | ||
| 32X-5, 40-44 | 291.75 | 203 | 27 | 27 | Bedding | ||
| 32X-6, 49-52 | 293.34 | 187 | 28 | 162 | 28 | Bedding | |
| 32X-6, 123-140 | 294.08 | 332 | 77 | 307 | 77 | Fault | Constrasting material crossing biscuits |
| 33X-1, 143-145 | 296.93 | 332 | 22 | 2 | 22 | Bedding | |
| 33X-2, 26-28 | 297.26 | 119 | 41 | 239 | 41 | Bedding | |
| 33X-2, 109-112 | 298.09 | 342 | 24 | 24 | Bedding | ||
| 33X-4, 17-19 | 300.17 | 311 | 19 | 19 | Bedding | ||
| 33X-4, 55-58 | 300.55 | 320 | 25 | 25 | Bedding | ||
| 33X-5, 33-36 | 301.83 | 339 | 23 | 23 | Bedding | ||
| 33X-6, 110-112 | 304.10 | 162 | 30 | 322 | 30 | Bedding | |
| 34X-2, 33-42 | 306.93 | 142 | 67 | 117 | 67 | Fault | |
| 34X-2, 121-126 | 307.81 | 259 | 32 | 313 | 32 | Fissility | (121-126) |
| 34X-3, 102-106 | 309.12 | 25 | 27 | 230 | 27 | Fissility | (102-106) |
| 35X-2, 19-27 | 316.49 | 213 | 34 | 350 | 34 | Bedding | (19-32) |
| 35X-2, 123-127 | 317.53 | 0 | 24 | 164 | 24 | Bedding | (123-127) |
| 35X-3, 115-118 | 318.95 | 0 | 0 | 0 | Bedding | (115-118) | |
| 35X-4, 42-46 | 319.72 | 0 | 28 | 28 | Bedding | (42-54) | |
| 35X-4, 93-97 | 320.23 | 180 | 23 | 315 | 23 | Bedding | (92-99) |
| 35X-6, 48-49 | 322.78 | 0 | 12 | 12 | Bedding | ||
| 36X-1, 117-124 | 325.57 | 144 | 34 | 34 | Bedding | (117-125) | |
| 36X-2, 133-136 | 327.23 | 205 | 27 | 165 | 27 | Bedding | (128-135) |
| 36X-5, 34-37 | 330.74 | 180 | 26 | 165 | 26 | Bedding | (34-44) |
| 37X-1, 127-128 | 335.27 | 341 | 15 | 15 | Bedding | ||
| 37X-1, 130-132 | 335.30 | 310 | 60 | 60 | Fault? | ||
| 37X-1, 135-137 | 335.35 | 217 | 40 | 40 | Normal fault | 20-mm displacement | |
| 37X-1, 137-139 | 335.37 | 338 | 26 | 26 | Bedding | ||
| 37X-1, 146-150 | 335.46 | 37 | 38 | 38 | Fault | ||
| 37X-3, 5-10 | 337.05 | 332 | 42 | 42 | Dipping contact | (3-13?) | |
| 37X-4, 30-33 | 338.80 | 19 | 40 | 40 | Fault | (30-33) | |
| 37X-4, 30-33 | 338.80 | 141 | 30 | 30 | Bedding | (30-33) | |
| 37X-5, 77-79 | 340.77 | 35 | 31 | 31 | Bedding | ||
| 37X-6, 102-104 | 342.52 | 69 | 47 | 47 | Normal fault | >40-mm displacement | |
| 37X-6, 103-104 | 342.53 | 126 | 30 | 30 | Bedding | ||
| 38X-1, 58-60 | 344.18 | 304 | 16 | 320 | 16 | Bedding | (57-62) |
| 38X-2, 41-44 | 345.51 | 180 | 28 | 28 | Color band | (40-44) | |
| 38X-2, 131-132 | 346.41 | 226 | 29 | 231 | 29 | Color band | (130-133) |
| 38X-3, 75-76 | 347.35 | 221 | 19 | 224 | 19 | Bedding | (71-79) |
| 38X-4, 27-28 | 348.37 | 312 | 25 | 25 | Bedding | (26-30) | |
| 39X | 353.20 | No structures | |||||
| 40X-1, 13-140 | 363.03 | Sediment breccia | |||||
| 40X | 362.90 | 0 | 0 | 0 | Bedding | ||
| 40X-4, 112-114 | 368.52 | 152 | 50 | 50 | Deformation band | (110-116) | |
| 41X | 372.50 | 0 | 0 | 0 | Bedding | ||
| 41X-1, 104-108 | 373.54 | Inclined fracture set | |||||
| 41X-2, 126-130 | 375.26 | Veins | Filled with drilling (?) mud | ||||
| 41X-3, 12-13 | 11 | 24 | 24 | Normal fault | (2-16) | ||
| 41X-3, 68-71 | Brecciated zone | ||||||
| 42X | 382.10 | 0 | 0 | 0 | Bedding | ||
| 42X-3, 45-50 | 385.55 | Fault | (44-50) | ||||
| 42X-3, 61-94 | 385.71 | Veins | Filled with drilling (?) mud | ||||
| 42X-4, 57-76 | 387.17 | Veins | Filled with drilling (?) mud | ||||
| 42X-4, 10-56 | 386.70 | Fault | Disrupted and faulted interval, probably coring enhanced | ||||
| 43X-1, 66-69 | 392.26 | 90 | 47 | 47 | Normal fault | Offset >17 mm | |
| 43X-1, 104-107 | 392.64 | 215 | 43 | 43 | Fault | ||
| 43X-1, 109-114 | 392.69 | 323 | 16 | 16 | Bedding | ||
| 44X-3, 102-107 | 404.54 | 291 | 26 | 26 | Bedding | ||
| 44X-3, 140-147 | 404.92 | 195 | 30 | 30 | Normal fault | 10-mm offset, healed (140-144) | |
| 44X-4, 6-14 | 405.08 | Fracture | Network of hairline fractures | ||||
| 44X-5, 17-18 | 406.69 | 0 | 12 | 12 | Bedding | ||
| 44X-CC, 15-25 | 409.04 | 200 | 66 | 66 | Fault | Average of 4 faults 4-mm offset each one (15-19) |
Notes: Cr az. = azimuth of plane in core reference frame, Cr dip = dip of plane in core reference frame, Pm az. = azimuth of plane in paleomagnetism reference frame, Pm plunge = plunge of plane in paleomagnetism reference frame. Paired values in parentheses in Notes column record coherent interval of intact drill biscuit used in paleomagnetic reorientation. Only a portion of this table appears here. The entire table is available in ASCII format.