Figure F27. Schematic lithologic column in a "weathering profile," x-velocity, porosity, and methane (C1) plots vs. depth for the lowermost 50 m of Site 1276 (1675–1725 mbsf). Right-hand border on the lithologic column indicates relative degree of compaction. Black circles indicate shipboard measurements. Dashed red lines are trend lines for each data set for sediments in lithologic Subunit 5C above the anomalous sediments.
