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doi:10.2204/iodp.proc.348.201.2017

Data report: permeability and microfabric of core samples from IODP Expedition 348, Hole C0002P, Nankai Trough accretionary prism 1

Chen Song 2 and Michael B. Underwood 3

Abstract

This report documents the results of constant-flow permeability tests in the vertical (along core) direction administered at effective isotropic confining stresses of 0.28 MPa (40 psi) and 0.55 MPa (80 psi). Specimens from the Nankai accretionary prism were collected from Hole C0002P of the Integrated Ocean Drilling Program. Beds dip at steep angles (typically 80° or more) throughout the cored interval (2174.98–2209.64 meters below seafloor). We tested specimens that consist of indurated clayey siltstone and medium to coarse siltstone. Environmental scanning electron microscopy shows that grain fabric is random and does not vary significantly among the specimens tested. Hydraulic conductivity values range from 3.83 × 10–9 to 2.68 × 10–8 cm/s. Intrinsic permeability values range from 3.80 × 10–18 to 2.66 × 10–17 m2.

1 Song, C., and Underwood, M.B., 2017. Data report: permeability and microfabric of core samples from IODP Expedition 348, Hole C0002P, Nankai Trough accretionary prism. In Tobin, H., Hirose, T., Saffer, D., Toczko, S., Maeda, L., Kubo, Y., and the Expedition 348 Scientists, Proceedings of the Integrated Ocean Drilling Program, 348: College Station, TX (Integrated Ocean Drilling Program).
doi:10.2204/iodp.proc.348.201.2017

2 Department of Geological Sciences, University of Missouri, Columbia MO 65211, USA.

3 Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro NM 87801, USA.
UnderwoodM@missouri.edu

Initial receipt: 23 February 2016
Acceptance: 1 May 2017
Publication: 7 July 2017
MS 348-201