Moran, Kate; Christian, Harold A (1990): Strength and deformation behavior of ODP Leg 110 sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.747751, Supplement to: Moran, K; Christian, HA (1990): Strength and deformation behavior of sediment from the Lesser Antilles Forearc Accretionary Prism. In: Moore, JC; Mascle, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 110, 279-288, https://doi.org/10.2973/odp.proc.sr.110.150.1990
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Abstract:
The shape and morphology of the northern Barbados Ridge complex is largely controlled by the sediment yield and failure behavior in response to high lateral loads imposed by convergence. Loads in excess of sediment yield strength result in nonrecoverable deformations within the wedge, and failure strength acts as an upper limit beyond which stresses are released through thrust faults. Relatively high loading rates lead to delayed consolidation and in-situ pore pressures greater than hydrostatic. The sediment yield and failure behavior is described for any stress path by a generalized constitutive model. A yield locus delineates the onset of plastic (non-recoverable) deformation, as defined from the isotropic and anisotropic consolidation responses of high-quality 38-mm triaxial specimens; a failure envelope was obtained by shearing the same specimens in both triaxial compression and extension. The yield locus is shown to be rotated into extension space and is centered about a K-line greater than unity, suggesting that the in-situ major principal stress has rotated into the horizontal plane, and that the sediment wedge is being subjected to extensional effective stress paths.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 15.532760 * Median Longitude: -58.687853 * South-bound Latitude: 15.525800 * West-bound Longitude: -58.732500 * North-bound Latitude: 15.540000 * East-bound Longitude: -58.641000
Date/Time Start: 1986-06-28T12:45:00 * Date/Time End: 1986-08-14T00:30:00
Event(s):
110-671B * Latitude: 15.525800 * Longitude: -58.732500 * Date/Time Start: 1986-06-28T12:45:00 * Date/Time End: 1986-07-10T23:15:00 * Elevation: -4942.0 m * Penetration: 691.2 m * Recovery: 553.13 m * Location: South Atlantic Ocean * Campaign: Leg110 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 74 cores; 691.2 m cored; 0 m drilled; 80 % recovery
110-672A * Latitude: 15.540000 * Longitude: -58.641000 * Date/Time Start: 1986-07-15T11:10:00 * Date/Time End: 1986-07-22T12:15:00 * Elevation: -4984.0 m * Penetration: 493.8 m * Recovery: 382.62 m * Location: South Atlantic Ocean * Campaign: Leg110 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 493.8 m cored; 0 m drilled; 77.5 % recovery
110-676A * Latitude: 15.530800 * Longitude: -58.703300 * Date/Time Start: 1986-08-10T11:15:00 * Date/Time End: 1986-08-14T00:30:00 * Elevation: -5070.0 m * Penetration: 310.2 m * Recovery: 262.09 m * Location: South Atlantic Ocean * Campaign: Leg110 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 310.2 m cored; 0 m drilled; 84.5 % 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
- Moran, K; Christian, HA (1990): (Table 1) Index properties of ODP Leg 110 triaxial samples. https://doi.org/10.1594/PANGAEA.747749
- Moran, K; Christian, HA (1990): (Table 2) Triaxial stress conditions ans shear strength parameters of ODP Leg 110 samples. https://doi.org/10.1594/PANGAEA.747750