(Table 1) Physical properties of basalts from DSDP Holes 69-504B and 70-504B
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1983
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| _version_ | 1867171816484634624 |
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| author | Karato, Shun-ichiro |
| author_facet | Karato, Shun-ichiro |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_816584 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Physical properties of basalts from DSDP Holes 69-504B and 70-504B Karato, Shun-ichiro 69-504B; 70-504B; Deep Sea Drilling Project; Density, grain; Density, wet bulk; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Electrical resistance; Event label; Glomar Challenger; Leg69; Leg70; Permeability (earth science); Porosity; Sample code/label; see reference(s); Velocity, compressional wave 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). |
| title | (Table 1) Physical properties of basalts from DSDP Holes 69-504B and 70-504B |
| topic | 69-504B; 70-504B; Deep Sea Drilling Project; Density, grain; Density, wet bulk; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Electrical resistance; Event label; Glomar Challenger; Leg69; Leg70; Permeability (earth science); Porosity; Sample code/label; see reference(s); Velocity, compressional wave |
| url | https://doi.org/10.1594/PANGAEA.816584 |