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Dugan, Brandon; Olgaard, David L; Flemings, Peter B; Gooch, M J (2002): Effective stress, porosity, p-wave velocity and mineral composition of ODP Hole 174A-1073A sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.787680, Supplement to: Dugan, B et al. (2002): Data report: Bulk physical properties of sediments from ODP Site 1073. In: Christie-Blick, N; Austin, JA Jr.; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 174A, 1-62, https://doi.org/10.2973/odp.proc.sr.174A.161.2002

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Abstract:
Porosity, permeability, and compressional (P-wave) velocity were measured as a function of stress on sediments from Ocean Drilling Program Site 1073, U.S. Mid-Atlantic continental slope. Thin sections, scanning electron microscopy, and X-ray diffraction analyses provided mineralogical characteristics of the samples. Uniaxial strain boundary conditions were imposed on the samples during consolidation tests with the maximum effective axial stress reaching 13 MPa. The maximum effective radial stress necessary to maintain uniaxial strain was 7.6 MPa. Over an effective axial stress interval of 0 to 5.2 MPa, Sample 174A-1073A-26X-2, 82-89 cm (226.65 meters below seafloor [mbsf]), exhibited the largest decrease in porosity (51% to 41%), whereas Sample 71X-1, 2-8 cm (644.70 mbsf), exhibited the smallest decrease in porosity (48% to 45%). All samples showed negligible porosity increases during unloading. The permeability (on the order of 1 x 10-17 m**2) of Sample 174A-1073A-71X-1, 2-8 cm, was twice that measured on Sample 8H-1, 23-26 cm (63.75 mbsf), even though the former was considerably deeper and older. The differences in porosity-stress behavior and permeability between shallow and deep samples is related to lithologic, mineralogic, and diagenetic differences between the sediments above and below the Pliocene-Pleistocene to Miocene unconformity. P-wave velocity for Samples 174A-1073A-41X-5, 97-103 cm (372.35 mbsf), and 71X-1, 2-8 cm, increased with decreasing porosity, but did not change significantly during unloading.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 39.225360 * Longitude: -72.275750
Date/Time Start: 1997-07-13T16:15:00 * Date/Time End: 1997-07-13T16:15:00
Event(s):
174-1073A * Latitude: 39.225360 * Longitude: -72.275750 * Date/Time: 1997-07-13T16:15:00 * Elevation: -639.4 m * Penetration: 663.6 m * Recovery: 662.98 m * Location: South Atlantic Ocean * Campaign: Leg174A * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 72 cores; 663.6 m cored; 0 m drilled; 99.9 % recovery
Comment:
For data of Table T11 see Dugan et al. (2003) dataset: doi:10.1594/PANGAEA.725246.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets

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Datasets listed in this publication series

  1. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T10) Mineral composition of ODP Hole 174A-1073A. https://doi.org/10.1594/PANGAEA.787679
  2. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T8) Compressional wave velocity and porosity of ODP Hole 174A-1073A. https://doi.org/10.1594/PANGAEA.787677
  3. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T9) Effective stress, fluid flux, porosity and permeability of ODP Hole 174A-1073A. https://doi.org/10.1594/PANGAEA.787678
  4. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T3) Effective stress and porosity measurements of ODP Sample 174A-1073A-8H-1,17-22. https://doi.org/10.1594/PANGAEA.787672
  5. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T4) Effective stress and porosity measurements of ODP Sample 174A-1073A-26X-2,76-82. https://doi.org/10.1594/PANGAEA.787673
  6. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T5) Effective stress and porosity measurements of ODP Sample 174A-1073A-26X-2,82-89. https://doi.org/10.1594/PANGAEA.787674
  7. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T6) Effective stress and porosity measurements of ODP Sample 174A-1073A-41X-5,97-103. https://doi.org/10.1594/PANGAEA.787675
  8. Dugan, B; Olgaard, DL; Flemings, PB et al. (2002): (Table T7) Effective stress and porosity measurements of ODP Sample 174A-1073A-71X-1,2-8. https://doi.org/10.1594/PANGAEA.787676