Consolidation tests of ODP Leg 113 samples
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1990
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| _version_ | 1867169502346608640 |
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| author | Bryant, William Rack, Frank R |
| author_facet | Bryant, William Rack, Frank R |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Examination of the geotechnical characteristics of Weddell Sea, Maud Rise, and South Orkney microcontinental margin sediments recovered during ODP Leg 113 reveals that the reduction in porosity (consolidation) of the siliciclastic, calcareous, and diatomaceous sediments is primarily a process governed by vertical stresses created by overburden. The initial porosity of the sediments in these areas is governed by the amount of diatoms present. The more diatoms, the higher the porosity. Surficial diatom-rich sediments are everywhere overconsolidated. This is attributed to the strong microfabric created by the diatoms, calcareous and clay particles. The deeper diatom-free sediments of Maud Rise range from slightly underconsolidated to normally consolidated. The silty clays and clays of the Weddell Sea and South Orkney margin are underconsolidated. The degree of underconsolidation of these sediments is similar to that determined in a number of different locations throughout the world's oceans. The very low permeability of the Weddell Sea and South Orkney margin sediments appears to account for this underconsolidation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_754290 |
| institution | PANGAEA |
| language | en |
| publishDate | 1990 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Consolidation tests of ODP Leg 113 samples Bryant, William Rack, Frank R 113-689C; 113-689D; 113-690C; 113-693A; 113-695A; 113-696A; 113-697B; DRILL; Drilling/drill rig; Joides Resolution; Leg113; Ocean Drilling Program; ODP; South Atlantic Ocean; Weddell Sea Examination of the geotechnical characteristics of Weddell Sea, Maud Rise, and South Orkney microcontinental margin sediments recovered during ODP Leg 113 reveals that the reduction in porosity (consolidation) of the siliciclastic, calcareous, and diatomaceous sediments is primarily a process governed by vertical stresses created by overburden. The initial porosity of the sediments in these areas is governed by the amount of diatoms present. The more diatoms, the higher the porosity. Surficial diatom-rich sediments are everywhere overconsolidated. This is attributed to the strong microfabric created by the diatoms, calcareous and clay particles. The deeper diatom-free sediments of Maud Rise range from slightly underconsolidated to normally consolidated. The silty clays and clays of the Weddell Sea and South Orkney margin are underconsolidated. The degree of underconsolidation of these sediments is similar to that determined in a number of different locations throughout the world's oceans. The very low permeability of the Weddell Sea and South Orkney margin sediments appears to account for this underconsolidation. |
| title | Consolidation tests of ODP Leg 113 samples |
| topic | 113-689C; 113-689D; 113-690C; 113-693A; 113-695A; 113-696A; 113-697B; DRILL; Drilling/drill rig; Joides Resolution; Leg113; Ocean Drilling Program; ODP; South Atlantic Ocean; Weddell Sea |
| url | https://doi.org/10.1594/PANGAEA.754290 |