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 ~4 x 10–16 to ~1 x 10–15 m2. The permeabilities of the hemipelagic mud sediments vary from ~2 x 10–18 to ~4 x 10–18 m2. To further characterize the sediments, grain size, total carbon, and total inorganic carbon analyses were conducted.
1Screaton, E., Hays, T., Gamage, K., and Martin, J., 2006. Data report: Permeabilities of Costa Rica subduction zone sediments. In Morris, J.D., Villinger, H.W., and Klaus, A. (Eds.), Proc. ODP, Sci. Results, 205 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/205_SR/204/204.htm>. [Cited YYYY-MM-DD]
2Department of Geological Sciences, University of Florida, 241 Williamson Hall, Box 112120, Gainsville FL 32611, USA. Correspondence author: screaton@ufl.edu
Initial receipt: 24 February 2005
Acceptance: 31 October 2005
Web publication:
19 April 2006
Ms 205SR-204