Gebhard, S N; Carlson, Richard L (1983): (Table 1) Summary of densities and compressional-wave velocities at DSDP Hole 72-516F [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.811466, Supplement to: Gebhard, SN; Carlson, RL (1983): Compressional-wave velocities in basalts from the Rio Grande Rise. In: Barker, PF; Carlson, RL; Johnson, DA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 72, 577-579, https://doi.org/10.2973/dsdp.proc.72.125.1983
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Published: 1983 (exact date unknown) • DOI registered: 2013-06-11
Abstract:
Compressional-wave velocities were measured in 9 samples from the 18 m of igneous basement penetrated by drilling at Hole 516F. Wet-bulk densities range from 2.50 to 2.92 g/cm**3; compressional-wave velocities (measured at 0.4 kbar confining pressure) range from 4.29 to 6.32 km/s. Because of progressive alteration, compressional-wave velocities in deep-sea basalts tend to decrease with age; velocities in basalts from immediately beneath the sediment/basement contact are consistent with the proposed age (86 ± 4 Ma) of basement at the site. A very strong vertical velocity gradient of 0.126 km/s/m in the 18-m basement interval reflects a marked decrease in the degree of alteration with depth beneath the contact.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -30.276500 * Longitude: -35.285000
Date/Time Start: 1980-03-11T00:00:00 * Date/Time End: 1980-03-11T00:00:00
Minimum DEPTH, sediment/rock: 1.8 m * Maximum DEPTH, sediment/rock: 15.9 m
Event(s):
72-516F * Latitude: -30.276500 * Longitude: -35.285000 * Date/Time: 1980-03-11T00:00:00 * Elevation: -1313.0 m * Penetration: 1270.6 m * Recovery: 690.1 m * Location: South Atlantic/CONT RISE * Campaign: Leg72 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 127 cores; 1092.5 m cored; 9 m drilled; 63.2 % recovery
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
90 data points
Data
| 1 Sample label (DSDP/ODP/IODP sample designation) | 2 WBD [g/cm3] | 3 Depth sed [m] (mbsf) | 4 Vp [m/s] (Varying pressure = 0.2 kbar, ...) | 5 Vp [m/s] (Varying pressure = 0.4 kbar, ...) | 6 Vp [m/s] (Varying pressure = 0.6 kbar, ...) | 7 Vp [m/s] (Varying pressure = 0.8 kbar, ...) | 8 Vp [m/s] (Varying pressure = 1.0 kbar, ...) | 9 Vp [m/s] (Varying pressure = 2.0 kbar, ...) | 10 Vp [m/s] (Varying pressure = 4.0 kbar, ...) | 11 Vp [m/s] (Varying pressure = 6.0 kbar, ...) |
|---|---|---|---|---|---|---|---|---|---|---|
| 72-516F-126-2,25-31 | 2.56 | 1.8 | 4610 | 4640 | 4660 | 4680 | 4690 | 4730 | 4780 | 4830 |
| 72-516F-126-2,38-43 | 2.56 | 1.9 | 4620 | 4640 | 4650 | 4660 | 4670 | 4710 | 4780 | 4840 |
| 72-516F-126-3,78-88 | 2.59 | 2.8 | 4500 | 4540 | 4570 | 4600 | 4610 | 4660 | 4750 | 4820 |
| 72-516F-126-3,116-121 | 2.50 | 3.2 | 4250 | 4290 | 4320 | 4340 | 4350 | 4400 | 4500 | 4590 |
| 72-516F-127-2,60-66 | 2.56 | 7.1 | 4530 | 4560 | 4580 | 4600 | 4610 | 4670 | 4770 | 4850 |
| 72-516F-127-3,46-52 | 2.64 | 7.5 | 4940 | 4960 | 4980 | 5000 | 5010 | 5070 | 5140 | 5210 |
| 72-516F-127-4,32-37 | 2.75 | 8.8 | 5380 | 5410 | 5430 | 5440 | 5450 | 5480 | 5520 | 5560 |
| 72-516F-128-1,90-96 | 2.86 | 14.9 | 6020 | 6050 | 6080 | 6100 | 6110 | 6140 | 6150 | 6160 |
| 72-516F-128-2,33-39 | 2.92 | 15.9 | 6300 | 6320 | 6330 | 6340 | 6350 | 6360 | 6390 | 6410 |