LABNO - Unique sample identifier assigned in the laboratory STATIONID - Sample name or number assigned in the field PROJECT - Project under which samples were taken or data were generated CRUISEID - Name or number of cruise on which the sample was collected or station was occupied PRINCIPAL - Name of the principal investigator LATITUDE - Latitude in decimal degrees (north latitudes are positive values) LONGITUDE - Longitude in decimal degrees (west longitudes are negative values) DEPTH_M - Depth of water overlying sediment at the time of sampling, measured by a hull-mounted fathometer, corrected for draft, but not corrected for tides, in meters T_DEPTH - Top depth of the sample below the sediment-water interface, in centimeters B_DEPTH - Bottom depth of the sample below the sediment-water interface, in centimeters DEVICE - Device used to collect the sample MONTH - Number of calendar month during which the sample was collected DAY - Calendar day on which the sample was collected YEAR - Calendar year during which the sample was collected WEIGHT - Dry weight of sample, in grams ZGRAVEL - Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1 phi and larger) ZSAND - Sand content in percent dry weight of the sample (particles with nominal diameters less than 2 mm but greater than or equal to 0.0625 mm; 0 through 4 phi, inclusive) ZSILT - Silt content in percent dry weight of the sample (particles with nominal diameters less than 0.0625 mm but greater than or equal to 0.004 mm; 5 through 8 phi, inclusive) ZCLAY - Clay content in percent dry weight of the sample (particles with nominal diameters less than 0.004 mm; 9 phi and smaller) SEDCLASS - Sediment description based on a rigorous definition (Shepard, 1954; Schlee, 1973; Poppe and others, 2004) For sediments with gravel equal to or greater than 10 percent: GRAVEL – gravel equal to or greater than 50 percent GRAVELLY SEDIMENT – gravel equal to or greater than 10 percent, but less than 50 percent For sediments with gravel less than 10 percent: SAND – sand equal to or greater than 75 percent SILTY SAND - sand less than 75 percent and equal to or greater than 50 percent, silt is greater than clay, and clay less than 20 percent CLAYEY SAND - sand less than 75 percent and equal to or greater than 50 percent, clay is greater than silt, and silt less than 20 percent SILT - silt equal to or greater than 75 percent SANDY SILT – silt less than 75 percent and equal to or greater than 50 percent, sand is greater than clay, and clay less than 20 percent CLAYEY SILT - silt less than 75 percent and equal to or greater than 50 percent, clay is greater than sand, and sand less than 20 percent CLAY – clay equal to or greater than 75 percent SANDY CLAY - clay less than 75 percent and equal to or greater than 50 percent, sand is greater than silt, and silt less than 20 percent SILTY CLAY - clay less than 75 percent and equal to or greater than 50 percent, silt is greater than sand, and sand less than 20 percent SAND SILT CLAY – all of these components greater than 20 percent MEDIAN - Middle point in the grain-size distribution, in phi units MEAN - Average value in the grain-size distribution, in phi units STDDEV - Standard deviation (root mean square of the deviations) of the grain-size distribution, in phi units (that is, sorting) SKEWNESS - Deviation from symmetrical form of the grain-size distribution KURTOSIS - Degree of curvature near the mode of the grain-size distribution PHI_11 - Weight percent of the sample in the 11-phi fraction (nominal diameter of particles greater than or equal to 0.0005 mm but less than 0.001 mm); fine clay PHI_10 - Weight percent of the sample in the 10-phi fraction (nominal diameter of particles greater than or equal to 0.001 mm but less than 0.002 mm); medium clay PHI_9 - Weight percent of the sample in the 9-phi fraction (nominal diameter of particles greater than or equal to 0.002 mm but less than 0.004 mm); coarse clay PHI_8 - Weight percent of the sample in the 8-phi fraction (nominal diameter of particles greater than or equal to 0.004 mm but less than 0.008 mm); very fine silt PHI_7 - Weight percent of the sample in the 7-phi fraction (nominal diameter of particles greater than or equal to 0.008 mm but less than 0.016 mm); fine silt PHI_6 - Weight percent of the sample in the 6-phi fraction (nominal diameter of particles greater than or equal to 0.016 mm but less than 0.031 mm); medium silt PHI_5 - Weight percent of the sample in the 5-phi fraction (nominal diameter of particles greater than or equal to 0.031 mm but less than 0.0625 mm); coarse silt PHI_4 - Weight percent of the sample in the 4-phi fraction (nominal diameter of particles greater than or equal to 0.0625 mm but less than 0.125 mm); very fine sand PHI_3 - Weight percent of the sample in the 3-phi fraction (nominal diameter of particles greater than or equal to 0.125 mm but less than 0.25 mm); fine sand PHI_2 - Weight percent of the sample in the 2-phi fraction (nominal diameter of particles greater than or equal to 0.25 mm but less than 0.5 mm); medium sand PHI_1 - Weight percent of the sample in the 1-phi fraction (nominal diameter of particles greater than or equal to 0.5 mm but less than 1 mm); coarse sand PHI_0 - Weight percent of the sample in the 0-phi fraction (nominal diameter of particles greater than or equal to 1 mm but less than 2 mm); very coarse sand PHIM1 - Weight percent of the sample in the -1-phi fraction (nominal diameter of particles greater than or equal to 2 mm but less than 4 mm); very fine pebbles (granules) PHIM2 - Weight percent of the sample in the -2-phi fraction (nominal diameter of particles greater than or equal to 4 mm but less than 8 mm); fine pebbles PHIM3 - Weight percent of the sample in the -3-phi fraction (nominal diameter of particles greater than or equal to 8 mm but less than 16 mm); medium pebbles PHIM4 - Weight percent of the sample in the -4-phi fraction (nominal diameter of particles greater than or equal to 16 mm but less than 32 mm); coarse pebbles PHIM5 - Weight percent of the sample in the -5-phi fraction (nominal diameter of particles greater than or equal to 32 mm); very coarse pebbles to boulders