Screaton, Elizabeth J.; Hays, Troy; Gamage, Kusali; Martin, Jennifer (2006): Permeabilities of Costa Rica subduction zone sediments. Texas A&M University, Ocean Drilling Program, College Station, TX, United States, In: Morris, Julie D., Villinger, Heinrich W., Klaus, Adam, Cardace, Dawn M., Chavagnac, Valerie M. C., Clift, Peter D., Haeckel, Matthias, Hisamitsu, Toshio, Kastner, Miriam, Pfender, Marion, Saffer, Demian M., Santelli, Cara, Schramm, Burkhard, Screaton, Elizabeth J., Solomon, Evan A., Strasser, Michael, Moe, Kyaw Thu, Vannucchi, Paola, Proceedings of the Ocean Drilling Program; scientific results; fluid flow and subduction fluxes across the Costa Rica convergent margin; implications for the seismogenic zone and subduction factory; covering Leg 205 of the cruises of the Drilling Vessel JOIDES Resolution; Victoria, Canada, to Balboa, Panama; Sites 1253-1255; 2 September-6 November 2002, 205, georefid:2007-025140

Constant-pressure difference and constant-flow permeability tests were conducted on core samples from Ocean Drilling Program Legs 170 and 205 from the Costa Rica subduction zone representing pelagic carbonate and hemipelagic mud lithologies. Seven whole-round core samples from Sites 1040, 1253, and 1255 were tested for vertical permeabilities. The permeabilities of the pelagic carbonate sediments range from approximately 4 X 10 (super -16) to approximately 1 X 10 (super -15) m (super 2) . The permeabilities of the hemipelagic mud sediments vary from approximately 2 X 10 (super -18) to approximately 4 X 10 (super -18) m (super 2) . To further characterize the sediments, grain size, total carbon, and total inorganic carbon analyses were conducted.
West: -86.1200 East: -86.1000 North: 9.4000 South: 9.3800
Expedition: 205
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