Karato, Shun-ichiro (1983): (Table 1) Physical properties of basalts from DSDP Holes 69-504B and 70-504B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816584, Supplement to: Karato, S- (1983): Physical properties of basalts from Deep Sea Drilling Project Hole 504B, Costa Rica Rift. 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, 687-695, https://doi.org/10.2973/dsdp.proc.69.143.1983
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Abstract:
A detailed study of physical properties was made on core samples from Deep Sea Drilling Project Hole 504B. The measured properties are density, porosity, sonic velocity, electrical resistivity, and fluid permeability. Basalts from this young oceanic crust have higher density and sonic velocity than the average DSDP basalts. Porosity (and temperature) dependences of physical properties are given by V = Vo - a-phi; roo = roo-0 exp(E*/RT)phi**-q; k = k0' phi**2q-1; where V is the sonic velocity (km/s), Vo = 6.45 (km/s), a = 0.111 (km/s %), phi is the porosity (%), roo is the electrical resistivity (ohm m), roo-0 = 0.002 (ohm m), E* = 2.7 (Kcal/mol) for fresh basalts, RT has its usual meaning, q = 1.67 ± 0.27, k is the permeability, k0' = (1 to about 10) x 10**-12 (cm**2). Porosity distribution in the crust in this area is estimated by combining the seismic velocity distribution and velocity-porosity relation. Because of the rapid decrease in porosity with depth, resistivity increases and permeability decreases rapidly with depth. The decreasing rate of permeability with increasing depth is approximately given by k(cm**2) = 2 x 10**-10 exp(-z (km)/0.3).
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.227100 * Median Longitude: -83.730100 * South-bound Latitude: 1.227000 * West-bound Longitude: -83.730200 * North-bound Latitude: 1.227200 * East-bound Longitude: -83.730000
Date/Time Start: 1979-10-07T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Minimum Elevation: -3460.0 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)
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 | Sample code/label | Sample label | Karato, Shun-ichiro | DSDP/ODP/IODP sample designation | # = Basalt breccia | |
| 3 | Density, wet bulk | WBD | g/cm3 | Karato, Shun-ichiro | see reference(s) | |
| 4 | Density, grain | Density grain | g/cm3 | Karato, Shun-ichiro | see reference(s) | |
| 5 | Porosity | Poros | % vol | Karato, Shun-ichiro | see reference(s) | |
| 6 | Velocity, compressional wave | Vp | m/s | Karato, Shun-ichiro | see reference(s) | |
| 7 | Electrical resistance | R | Ohm | Karato, Shun-ichiro | see reference(s) | |
| 8 | Permeability (earth science) | k | 10-12 m2 | Karato, Shun-ichiro | see reference(s) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
382 data points