Data report: permeability and grain size of sediments, IODP Expeditions 372 and 375

Abstract

A total of 15 whole-round core samples from International Ocean Discovery Program (IODP) Expeditions 372 and 375 were tested for vertical permeability. The samples were recovered from four sites. Sites U1517 and U1519 are located on the upper slope, Site U1518 is located near the trench, and Site U1520 is located seaward of the trench. Measured vertical permeability varied from 5.7 × 10−19 m2 to 1.7 × 10−16 m2. Unless cores were too consolidated to disaggregate, subsamples were taken and analyzed for grain size. The tested samples contained 35.4%–66.3% clay-sized (<4 µm), 32.7%–51.7% silt-sized (4–63 µm), and 0.5%–23.1% sand-sized (>63 µm) fractions.