Table T7. Structural data, Hole 1177A.
|
Core,
section, interval (cm)
|
Depth (mbsf)
|
Cr az. (°)
|
Cr dip (°)
|
Pm
az.
|
Pm
plunge |
Half
|
Identifier
|
Notes
|
|---|---|---|---|---|---|---|---|---|
| 190-1177A- | ||||||||
| 1R | 300.21 | 0 | 0 | W | Bed | Locally, bed dips 8° | ||
| 1R | 300.21 | W | Fracture | Subvertical fractures, drilling induced? | ||||
| 2R | 309.21 | 0 | 0 | W | Bed | |||
| 2R-1, 140-144 | 310.60 | 80 | Fracture | 5-mm displacement (rotated biscuit) | ||||
| 3R | 318.91 | 0 | 0 | Bed | ||||
| 3R-4, 22-31 | 323.62 | 318 | 63 | Normal fault | (22-29) offset ~1 cm | |||
| 4R | 328.51 | 0 | 0 | Bed | Highly biscuited | |||
| 5R | 338.11 | 0 | 0 | Bed | Highly biscuited | |||
| 6R | 347.71 | 0 | 0 | Bed | ||||
| 7R | 357.31 | 0 | 0 | Bed | ||||
| 8R | 367.01 | 0 | 0 | Bed | ||||
| 9R | 376.61 | 0 | 0 | Bed | ||||
| 10R | 386.11 | 0 | 0 | Bed | ||||
| 11R | 395.71 | 0 | 0 | Bed | ||||
| 11R-2,3,4, 80-84 | 398.00 | Breccia | Unusual texture, friable, polished fragments | |||||
| 11R-5, 10-14 | 401.80 | Breccia | Early dewatering structure | |||||
| 12R-4 | 409.19 | 85 | Fracture | Subvertical, cannot be reoriented | ||||
| 13R-1 | 414.91 | 12 | Bed | |||||
| 13R-3, 19-24 | 418.09 | ~65 | Fracture | Drilling induced? | ||||
| 13R-6, 6-7 | 422.46 | Microbreccia | Soft sediment deformation. | |||||
| 14R | 424.51 | 0 | 0 | Zoophycos | ||||
| 14R-5, 125-135 | 431.75 | Faults | Small offset | |||||
| 16R-2, 48-50 | 445.88 | Fold | Tight fold in lamination | |||||
| 16R-5, 36-39 | 450.26 | Web structure | Probably drilling induced | |||||
| 17R | 453.51 | 0 | 0 | Fracture? | ||||
| 18R | 463.11 | 0 | 0 | Bed | Highly biscuited | |||
| 19R-2, 75-76 | 475.05 | 0 | 10 | Bed | ||||
| 19R-2, 14-18 | 474.44 | 110 | 71 | Fracture | Drilling induced? | |||
| 19R-4, 72-77 | 478.02 | 352 | 41 | Fault | 2-mm offset | |||
| 19R-6, 98-101 | 481.28 | 138 | 65 | Fault | Parallel set | |||
| 21R | 492.01 | 0 | 0 | |||||
| 22R-CC | 502.45 | 0 | 0 | Bed | Turbidites | |||
| 22R-CC | 502.45 | Web structure | Normal sense | |||||
| 23R | 511.11 | 0 | 0 | Bed | Horizontal turbidites and hemipelagites | |||
| 24R | 520.71 | 0 | 0 | Bed | Horizontal turbidites and hemipelagites | |||
| 25R | 530.41 | 0 | 0 | |||||
| 25R-5, 60-30 | 537.00 | Stylolite | Possible? | |||||
| 26R | 540.11 | 0 | 0 | Bed | Horizontal turbidites | |||
| 27R | 549.71 | 0 | 0 | Bed | Horizontal turbidites | |||
| 28R-CC | 559.41 | 0 | 0 | Bed | Only sands in CC | |||
| 29R | 568.91 | 0 | 0 | Bed | ||||
| 30R | 578.51 | 0 | 0 | Bed | ||||
| 30R-1, 95-105 | 579.45 | 180 | 53 | Fracture | Bluish green alteration along the fracture | |||
| 30R-1, 106-110 | 579.56 | 310 | 80 | 50 | 80 | Fault | Normal, 2.5-cm offset | |
| 30R-2, 3-9 | 580.03 | 236 | 62 | Fault | (0-60) black surface with slickenlines | |||
| 30R-2, 20-20 | 580.20 | 58 | 53 | Fault | (0-60) | |||
| 30R-2, 38-38 | 580.38 | 214 | 58 | Fault | (0-60) | |||
| 30R-2, 50-50 | 580.50 | 5 | 45 | Fault | (0-60) all brecciated zone | |||
| 31R-1,2 | 588.21 | Highly biscuited | ||||||
| 32R | 597.81 | 0 | 0 | Bed | ||||
| 33R | 607.51 | 0 | 0 | Bed | ||||
| 34R | 620.00 | 0 | 0 | Bed | ||||
| 35R | 626.71 | 0 | 0 | Bed | ||||
| 35R-3, 6-9 | 628.26 | Soft sediment deformation | Fluid-escape structure? | |||||
| 36R | 636.31 | 0 | 0 | Bed | ||||
| 37R | 645.91 | 0 | 0 | Bed | ||||
| 38R | 655.51 | 0 | 0 | Bed | ||||
| 39R | 665.21 | 0 | 0 | Bed | ||||
| 40R | 674.81 | 0 | 0 | Bed | ||||
| 41R | 684.41 | 0 | 0 | Bed | ||||
| 42R | 694.01 | 0 | 0 | Bed | ||||
| 43R | 703.71 | 0 | 0 | Bed | ||||
| 44R | 713.31 | 0 | 0 | Bed | ||||
| 45R | 722.91 | 0 | 0 | Bed | ||||
| 47R-1,2,3 | 742.11 | 0 | 0 | Bed | ||||
| 47R-1, 0-25 | 742.10 | Sedimentary breccia | ||||||
| 48R | 751.71 | 0 | 0 | Bed | Rip-up clasts | |||
| 49R | 761.31 | 0 | 0 | Bed | ||||
| 50R-1, 1-56 | 771.01 | 0 | 0 | Bed | ||||
| 50R-1, 56-150 | 771.56 | Disrupted interval, intralayer folds | ||||||
| 50R-2, 9-32 | 772.59 | Disrupted and folded interval, slumped? | ||||||
| 51R | 780.61 | 0 | 0 | Bed | ||||
| 52R | 790.31 | 0 | 0 | Bed | ||||
| 53R | 799.91 | 0 | 0 | Bed | ||||
| 54R-1 to 5 | 809.51 | 0 | 0 | Bed | ||||
| 54R-CC, 21-23 | 816.40 | Normal faults | Probably drilling induced | |||||
| 55R-2, 112-115 | 821.82 | Recumbent fold | Soft sediment deformation | |||||
| 55R-3, 1-12 | 822.21 | 0 | 0 | Fissility | ||||
| 55R-3, 16-20 | 822.36 | Recumbent fold | Soft sediment deformation | |||||
| 56R | 828.81 | 0 | 0 | Bed | ||||
| 56R-3, 3-4 | 831.11 | 309 | 37 | Vein | 1 mm wide | |||
| 56R-3, 15-19 | 831.23 | 341 | 75 | Vein | 1 to 2 mm | |||
| 56R-3, 28-28 | 831.36 | 42 | 13 | Vein | 1 to 2 mm wide | |||
| 56R-3, 26-26 | 831.34 | 322 | 19 | Vein | <1 mm wide | |||
| 56R-3, 22-22 | 831.30 | 142 | 49 | Contact | ||||
| 56R-3, 31-44 | 831.39 | 0 | 12 | 340 | 12 | Vein | 2.5 mm wide | |
| 56R-3, 36-40 | 831.44 | 153 | 72 | Vein | ||||
| 56R-3, 67-73 | 831.75 | 39 | 53 | 14 | 53 | Vein | Dark, fracture, 0.5 mm wide | |
| 56R-3, 80-80 | 831.88 | 71 | 21 | 46 | 21 | Vein | White, 3 mm wide | |
| 56R-3, 66-66 | 831.74 | 180 | 5 | 155 | 5 | Vein | White, 1 mm wide | |
| 56R-3, 70-75 | 831.78 | 164 | 49 | 139 | 49 | Vein | Dark, <1 mm wide |
Note: Cr az. = azimuth of plane in core reference frame, Cr dip = dip of plane in core reference frame, Pm az. = azimuth of plane in paleomagnetic reference frame, Pm plunge = plunge of plane in paleomagnetic reference frame.