Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

Data report: consolidation state and stress ratio of clay-rich sediments from Site U1320: Expedition 308

Proceedings of the IODP

Integrated Ocean Drilling Program

Read this article at

ScienceOpenPublisher
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Overpressure and fluid flow processes in the deepwater Gulf of Mexico were investigated during Expedition 308 of the Integrated Ocean Drilling Program. This data report presents the results from a reconsolidation test that was carried out on a clay-rich sample from the base of Brazos-Trinity Basin IV, at 276.40 m below seafloor. The sample was subjected to a stress path of uniaxial strain (K0 reconsolidation), and the test was conducted in an advanced triaxial cell under drained conditions. Posttest investigation revealed that the sample was disturbed by drilling. The results should be interpreted with care. The sample was loaded to a total effective vertical stress, σv′, of 24 MPa, corresponding to effective horizontal stress, σh′, of >16 MPa and vertical strain, εv, of 16%. The results propose an effective vertical yield stress of 2.03 MPa, which suggests a maximum pore fluid pressure in excess of hydrostatic water pressure of 0.24 MPa. Furthermore, the ratio between effective horizontal and vertical stresses is rather constant, ~0.7, even at high stress magnitudes.

      Related collections

      Most cited references 8

      • Record: found
      • Abstract: not found
      • Article: not found

      Overpressure and Fluid Flow in the New Jersey Continental Slope: Implications for Slope Failure and Cold Seeps

       B. Dugan (2000)
        Bookmark
        • Record: found
        • Abstract: not found
        • Article: not found

        Consolidation state and strength of underthrust sediments and evolution of the décollement at the Nankai accretionary margin: Results of uniaxial reconsolidation experiments

         Julia Morgan (2004)
          Bookmark
          • Record: found
          • Abstract: not found
          • Article: not found

          Work as a criterion for determiningin situand yield stresses in clays

            Bookmark

            Author and article information

            Journal
            10.2204/iodp.proc.308.2006
            Proceedings of the IODP
            Integrated Ocean Drilling Program
            1930-1014
            06 May 2009
            10.2204/iodp.proc.308.207.2009

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            Product
            Self URI (journal page): http://publications.iodp.org/

            Comments

            Comment on this article