Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Feeser, Volker; Moran, Kate; Brückmann, Warner (1993): Stress tests of ODP Site 131-808 sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.785258, Supplement to: Feeser, V et al. (1993): Stress-regime-controlled yield and strength behavior of sediment from the frontal part of the Nankai accretionary prism. In: Hill, IA; Taira, A; Firth, JV; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 131, 261-273, https://doi.org/10.2973/odp.proc.sr.131.123.1993

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Sediments undergoing accretion in trench-forearc systems are subjected to conditions of large lateral thrusting. This stress regime controls the mechanism of faulting as well as the yield and strength properties of the sediment. Understanding them is therefore crucial for the construction of quantitative models of sediment dynamics in convergent margin settings.
For this purpose triaxial and oedometer tests were performed on six whole-round core samples recovered from Site 808 from depths between 173 and 705 mbsf. Samples from five depth intervals were subjected to a triaxial test program that was primarily designed to define yield and strength behavior. Test specimens were cut parallel and normal to the core axis. Additional five oedometer tests with similarly prepared specimens were performed on samples from four depth intervals to evaluate the directional state and degree of sediment compaction.
Test results show that the degree of sediment compaction is higher than expected from overburden. This overcompaction increases with depth. A well-developed mechanical anisotropy is evident in all samples tested, regardless of their depth and lithology. Values of yield limit, stiffness, and shear strength are up to 40% higher in the horizontal direction compared to the vertical direction. In addition the test data demonstrate that the axis of the volumetric yield loci have rotated into extensional stress field. This verifies that the mechanical state of sediment in the accretionary wedge is controlled by in-situ stress conditions of extensional nature. The coefficients of lateral stress inferred suggest that the extensional stress regime becomes increasingly effective with depth.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 32.352097 * Median Longitude: 134.944248 * South-bound Latitude: 32.351400 * West-bound Longitude: 134.943600 * North-bound Latitude: 32.352800 * East-bound Longitude: 134.946000
Date/Time Start: 1990-04-04T00:00:00 * Date/Time End: 1990-05-31T05:10:00
Event(s):
131-808 * Latitude: 32.352150 * Longitude: 134.944367 * Date/Time Start: 1990-04-04T00:00:00 * Date/Time End: 1990-05-31T00:00:00 * Elevation: -4685.1 m * Penetration: 4130.2 m * Recovery: 732.1 m * Location: Philippine Sea * Campaign: Leg131 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 163 cores; 1463.3 m cored; 1980 m drilled; 50% recovery
131-808B * Latitude: 32.351400 * Longitude: 134.943600 * Date/Time Start: 1990-04-06T15:45:00 * Date/Time End: 1990-04-16T04:00:00 * Elevation: -4685.0 m * Penetration: 358.8 m * Recovery: 59.71 m * Location: Philippine Sea * Campaign: Leg131 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 28 cores; 247.8 m cored; 0 m drilled; 24.1 % recovery
131-808C * Latitude: 32.352800 * Longitude: 134.944300 * Date/Time Start: 1990-04-16T04:00:00 * Date/Time End: 1990-05-02T14:40:00 * Elevation: -4686.0 m * Penetration: 1327 m * Recovery: 572.43 m * Location: Philippine Sea * Campaign: Leg131 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 108 cores; 1028.5 m cored; 0 m drilled; 55.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Feeser, V; Moran, K; Brückmann, W (1993): (Table 2) Soil mechanical index characterization of sediments from ODP Site 131-808. https://doi.org/10.1594/PANGAEA.785255
  2. Feeser, V; Moran, K; Brückmann, W (1993): (Table 1) Yield and strength testing program of ODP Site 131-808 sediments. https://doi.org/10.1594/PANGAEA.785254
  3. Feeser, V; Moran, K; Brückmann, W (1993): (Table 3) Compression and stress test for ODP Site 131-808B sediments. https://doi.org/10.1594/PANGAEA.785257