Karato, Shun-ichiro; Wilkens, Roy H; Langseth, Marcus G (1983): (Table 1) Physical properties of basalts from DSDP Legs 69 and 70 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816582, Supplement to: Karato, S- et al. (1983): Shipboard physical-properties measurements of basalts from the Costa Rica Rift, Deep Sea Drilling Project Legs 69 and 70. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 675-681, https://doi.org/10.2973/dsdp.proc.69.141.1983
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Abstract:
Physical properties of basalts from Deep Sea Drilling Project Sites 504 and 505, south of the Costa Rica Rift, including wet-bulk density, water content, sonic velocity, and thermal conductivity, were measured on board D/V Glomar Challenger during Legs 69 and 70. The mean wet-bulk density is 2.90±0.06 g/cm**3, porosity 5.0±2.2%, sonic velocity 5.75±0.30 km/s, and thermal conductivity 1.67±0.09 W/m°K.
Basalts from this young ocean crust (5.9 m.y.) have relatively low porosity and consequently high density and sonic velocity, as compared to average DSDP basalts.
Some systematic trends in depth variation of physical properties were found: down to Core 40 in Hole 504B, grain densities were lower than those deeper in the hole, whereas porosity in the upper section was higher. This can be attributed either to differences in the flow type or in the nature of alteration of basalts at the different levels in the hole.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.458067 * Median Longitude: -83.749500 * South-bound Latitude: 1.227000 * West-bound Longitude: -83.788300 * North-bound Latitude: 1.920000 * East-bound Longitude: -83.730000
Date/Time Start: 1979-09-29T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Minimum Elevation: -3507.0 m * Maximum Elevation: -3460.0 m
Event(s):
69-504B * Latitude: 1.227200 * Longitude: -83.730200 * Date/Time: 1979-10-07T00:00:00 * Elevation: -3460.0 m * Penetration: 489 m * Recovery: 262 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
69-505B * Latitude: 1.920000 * Longitude: -83.788300 * Date/Time: 1979-09-29T00:00:00 * Elevation: -3507.0 m * Penetration: 178 m * Recovery: 6.8 m * Location: North Pacific/GRABEN * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 42 m cored; 0 m drilled; 16.3 % recovery
70-504B * Latitude: 1.227000 * Longitude: -83.730000 * Date/Time: 1979-12-04T00:00:00 * Elevation: -3460.0 m * Penetration: 836.1 m * Recovery: 91.6 m * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 328.6 m cored; 18.5 m drilled; 27.9 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | Karato, Shun-ichiro | DSDP/ODP/IODP sample designation | ||
| 6 | Density, wet bulk | WBD | g/cm3 | Karato, Shun-ichiro | see reference(s) | |
| 7 | Density, grain | Density grain | g/cm3 | Karato, Shun-ichiro | see reference(s) | |
| 8 | Porosity | Poros | % vol | Karato, Shun-ichiro | see reference(s) | |
| 9 | Velocity, compressional wave | Vp | m/s | Karato, Shun-ichiro | Hamilton frame velocimeter, Boyce (1976) | |
| 10 | Conductivity, thermal | k | W/m/K | Karato, Shun-ichiro | Steady state needle probe | #1.1 = smectite breccia; #1.35 = average of five measurements of breccias |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
670 data points