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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
1983
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| Online Access: | https://doi.org/10.1594/PANGAEA.816582 |
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| _version_ | 1867170962049335296 |
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| author | Karato, Shun-ichiro Wilkens, Roy H Langseth, Marcus G |
| author_facet | Karato, Shun-ichiro Wilkens, Roy H Langseth, Marcus G |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_816582 |
| institution | PANGAEA |
| language | en |
| publishDate | 1983 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Physical properties of basalts from DSDP Legs 69 and 70 Karato, Shun-ichiro Wilkens, Roy H Langseth, Marcus G 69-504B; 69-505B; 70-504B; Conductivity, thermal; Deep Sea Drilling Project; Density, grain; Density, wet bulk; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Hamilton frame velocimeter, Boyce (1976); Latitude of event; Leg69; Leg70; Longitude of event; North Pacific/GRABEN; Porosity; Sample code/label; see reference(s); Steady state needle probe; Velocity, compressional wave 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. |
| title | (Table 1) Physical properties of basalts from DSDP Legs 69 and 70 |
| topic | 69-504B; 69-505B; 70-504B; Conductivity, thermal; Deep Sea Drilling Project; Density, grain; Density, wet bulk; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Hamilton frame velocimeter, Boyce (1976); Latitude of event; Leg69; Leg70; Longitude of event; North Pacific/GRABEN; Porosity; Sample code/label; see reference(s); Steady state needle probe; Velocity, compressional wave |
| url | https://doi.org/10.1594/PANGAEA.816582 |