Bryant, William; Rack, Frank R (1990): Consolidation tests of ODP Leg 113 samples [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.754290, Supplement to: Bryant, W; Rack, FR (1990): Consolidation characteristics of Weddell Sea sediments: results of ODP Leg 113 (see chapter correction). In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 211-223, https://doi.org/10.2973/odp.proc.sr.113.173.1990
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Abstract:
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.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -64.797886 * Median Longitude: -22.868340 * South-bound Latitude: -70.832000 * West-bound Longitude: -43.451600 * North-bound Latitude: -61.810000 * East-bound Longitude: 3.100400
Date/Time Start: 1987-01-18T06:45:00 * Date/Time End: 1987-03-07T13:30:00
Event(s):
113-689C * Latitude: -64.517000 * Longitude: 3.100400 * Date/Time Start: 1987-01-18T06:45:00 * Date/Time End: 1987-01-18T12:30:00 * Elevation: -2091.0 m * Penetration: 27.6 m * Recovery: 20.54 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 27.6 m cored; 0 m drilled; 74.4 % recovery
113-689D * Latitude: -64.517000 * Longitude: 3.100400 * Date/Time Start: 1987-01-18T12:30:00 * Date/Time End: 1987-01-19T09:00:00 * Elevation: -2091.0 m * Penetration: 133.8 m * Recovery: 115.97 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 115.7 m cored; 0 m drilled; 100.2 % recovery
113-690C * Latitude: -65.160000 * Longitude: 1.204800 * Date/Time Start: 1987-01-21T07:00:00 * Date/Time End: 1987-01-23T20:30:00 * Elevation: -2925.0 m * Penetration: 321.2 m * Recovery: 177.19 m * Location: South Atlantic Ocean * Campaign: Leg113 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 200.6 m cored; 0 m drilled; 88.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Bryant, W; Rack, FR (1990): (Table 1) Consolidation test of ODP Leg 113 samples. https://doi.org/10.1594/PANGAEA.754277
- Bryant, W; Rack, FR (1990): (Table 2) Shear strength to vertical stress ratios of ODP Leg 113 samples. https://doi.org/10.1594/PANGAEA.754288