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doi:10.2204/iodp.proc.344.202.2015

Data report: permeability of Expedition 344 sediments from the Costa Rica Seismogenesis Project¹

Stephanie R. James,² and Elizabeth J. Screaton²

Abstract

Permeability tests were conducted on 17 core samples (oriented vertically) and 1 minicore sample (oriented horizontally) from Integrated Ocean Drilling Program Expedition 344, which investigated the processes affecting seismogenesis of the Costa Rica subduction zone. Fifteen of the samples consisted of clastic sediment and three samples consisted of calcareous ooze. Measured vertical permeability varies from 5.4 × 10^–19 m² to 1.3 × 10^–15 m². Grain sizes were measured for 11 of the core samples. Samples consisted primarily of clay-sized (<4 µm) fractions (53–77 wt%), with lesser silt-sized (4 to 63 µm) fractions (22–41 wt%) and sand-sized (>63 µm) fractions (1–19 wt%).

¹ James, S.R., and Screaton, E.J., 2015. Data report: permeability of Expedition 344 sediments from the Costa Rica Seismogenesis Project. In Harris, R.N., Sakaguchi, A., Petronotis, K., and the Expedition 344 Scientists, Proceedings of the Integrated Ocean Drilling Program, 344: College Station, TX (Integrated Ocean Drilling Program). doi:10.2204/iodp.proc.344.202.2015

² Department of Geological Sciences, University of Florida, Gainesville FL 32611, USA. Correspondence author: screaton@ufl.edu

Acceptance: 1 October 2015
Publication: 14 December 2015
MS 344-202

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