Figure F5. Pore water data of prism and underthrust sediments indicating lateral fluid flow along the décollement and an upper flow conduit (gray shaded areas). A. Sites 1040 and Site 1254 1.5 km arcward of the deformation front. B. Sites 1043 and 1255 0.4 km arcward of the deformation front. Note that propane data shown here were determined using the headspace sampling technique.