Docstoc

Dictionary

Document Sample
Dictionary Powered By Docstoc
					TABLE OF GRAIN SIZE DATA Short_Field_Name Full Length Field Name

GROUP

Group USGS unique sample identifier Field Identifier Project name Cruise ID Principal contact Area Latitude Longitude Original precision Depth or sounding in meters Sounding method Top depth Bottom depth Sampling device Month collected Day collected Year collected Lithology Comments Month analyzed Day analyzed Year analyzed Weight %Gravel %Sand

USGS DB_ID FIELD_ID PROJ_NAME CRUISE_ID CONTACT AREA LATITUDE LONGITUDE ORIG_PREC DEPTH_M SOUND.METHOD T_DEPTH B_DEPTH DEVICE MONTH_COLL DAY_COLL YEAR_COLL LITHOLOGY COMMENTS MONTH_ANAL DAY_ANAL YEAR_ANAL WEIGHT GRAVEL_PCT SAND_PCT

Field Description Number assigned to data based on source (1 = Samples taken before start of the joint USGS/WHOI project; 2 = USGS/WHO I Atlantic Continental Margin Program stations; 3 = samples analyzed by the USGS Branch of Atlantic Marine Geology Sediment Laboratory) Unique identification number (consisting of 2 characters and 3 numerics) generated in the sedimentation laboratory of the USGS's Woods Hole Field Center for the USGS East Coast Sediment Texture Database Sample name or number as assigned in the field Project under which samples were taken or data generated; sometimes indicates more specific area Name or number of cruise on which sample collected Name of Principal Investigator (usually first initial and last name) General area (general enough to easily locate on a state map ) Latitude in decimal-degrees (south latitudes depicted by negative values, according to World Convention) Longitude in decimal-degrees (west longitudes depicted by negative values, according to World Convention) Precision of location measurement (e.g.. DM for degrees and minutes, DMS.x for degrees, minutes, and seconds to the tenth decimal position) Measured depth of water overlying sediment during sampling, not corrected for tides, in meters Method used to ascertain depth Top depth of sample below the sediment-water interface, in cm Bottom depth of sample below the sediment-water interface, in cm Device used to collect the sample Calendar month sample collected Calendar day sample collected Calendar year sample collected General lithologic description of sample Comments on sample collection or lithology Calendar month sample analyzed Calendar day sample analyzed Calendar year sample analyzed Weight of wet sample in grams Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1 phi and larger Sand content in percent dry weight of sample (particles with nominal diameters less than 2 mm but greater than or equal to 0.0625 mm; 0 phi through 4 phi)

Short_Field_Name SILT_PCT CLAY_PCT SED_CLASS CLASS_CODE MEDIAN MEAN STDEV SKEWNESS KURTOSIS MODE_1_CLA MODE_1_STR MODE_2_CLA MODE_2_STR MODE_3_CLA MODE_3_STR N_MODES PHI_STEP FROM_PHI TO_PHI PHI-11 PHI-10 PHI-9 PHI-8 PHI-7 PHI-6 PHI-5 PHI-4

Full Length Field Name %Silt %Clay Classification Class code Median Mean Standard deviation (sorting) Skewness Kurtosis Mode 1 class Mode 1 strength Mode 2 class Mode 2 strength Mode 3 class Mode 3 strength No. of modes Phi step From phi To phi -11 Phi -10 Phi -9 Phi -8 Phi -7 Phi -6 Phi -5 Phi -4 Phi

Field Description 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 phi through 8 phi, inclusive) Clay content in percent dry weight of the sample (particles with nominal diameters less than 0.004 mm; less than 8 phi) Sediment description based on rigorous definition (usually Shepard,1954) Code number assigned based on sample classification; for plotting purposes only Middle point in the grain size distribution in phi units Average value in the grain size distribution in phi units Standard deviation (root mean square of the deviations) of the grain size distribution in phi units Skewness (deviation from symmetrical form) of the grain size distribution in phi units Kurtosis (degree of curvature near the mode) of the grain size distribution in phi units First mode (particle size that occurs the most number of times) in phi units Modal strength of the first mode in percent Second mode in phi units Modal strength of the second mode in percent Third mode in phi units Modal strength of the third mode in percent Number of modes Phi step interval used in analysis (e.g. full phi, half phi) Largest particle size measured, in phi units Smallest particle size measured, in phi units Weight percent of the sample in the -11 phi fraction (nominal diameter of particles greater than or equal to 2048mm) Weight percent of the sample in the -10 phi fraction (nominal diameter of particles greater than or equal to 1024mm, but less than 2048mm) Weight percent of the sample in the -9 phi fraction (nominal diameter of particles greater than or equal to 512mm, but less than 1024mm) Weight percent of the sample in the -8 phi fraction (nominal diameter of particles greater than or equal to 256mm, but less than 512mm); boulders Weight percent of the sample in the -7 phi fraction (nominal diameter of particles greater than or equal to 128mm, but less than 256mm); large cobbles Weight percent of the sample in the -6 phi fraction (nominal diameter of particles greater than or equal to 64mm, but less than 128mm); small cobbles Weight percent of the sample in the -5 phi fraction (nominal diameter of particles greater than or equal to 32mm, but less than 64mm); very coarse pebbles Weight percent of the sample in the -4 phi fraction (nominal diameter of particles greater than or equal to 16mm, but less than 32mm); coarse pebbles

Short_Field_Name PHI-3 PHI-2 PHI-1 PHI_0 PHI_1 PHI_2 PHI_3 PHI_4 PHI_5 PHI_6 PHI_7 PHI_8 PHI_9 PHI_10 PHI_11 PHI_12 PHI_13 PHI_14 PHI_15

Full Length Field Name -3 Phi -2 Phi -1 Phi 0 Phi 1 Phi 2 Phi 3 Phi 4 Phi 5 Phi 6 Phi 7 Phi 8 Phi 9 Phi 10 Phi 11 Phi 12 Phi 13 Phi 14 Phi 15 Phi

Field Description Weight percent of the sample in the -3 phi fraction (nominal diameter of particles greater than or equal to 8mm, but less than 16mm); medium pebbles Weight percent of the sample in the -2 phi fraction (nominal diameter of particles greater than or equal to 4mm, but less than 8mm); fine pebbles Weight percent of the sample in the -1 phi fraction (nominal diameter of particles greater than or equal to2mm, but less than 4mm); very fine pebbles (granules) Weight percent of the sample in the 0 phi fraction (nominal diameter of particles greater than or equal to 1mm, but less than 2mm); very coarse sand Weight percent of the sample in the 1 phi fraction (nominal diameter of particles greater than or equal to 0.5mm, but less than 1mm); coarse sand Weight percent of the sample in the 2 phi fraction (nominal diameter of particles greater than or equal to 0.25mm, but less than 0.5mm); medium sand Weight percent of the sample in the 3 phi fraction (nominal diameter of particles greater than or equal to 0.125mm, but less than 0.25mm); fine sand Weight percent of the sample in the 4 phi fraction (nominal diameter of particles greater than or equal to 0.0625mm, but less than 0.125mm); very fine sand Weight percent of the sample in the 5 phi fraction (nominal diameter of particles greater than or equal to 0.031mm, but less than 0.0625mm); coarse silt Weight percent of the sample in the 6 phi fraction (nominal diameter of particles greater than or equal to 0.016mm, but less than 0.031mm); medium silt Weight percent of the sample in the7 phi fraction (nominal diameter of particles greater than or equal to 0.008mm, but less than 0.016mm); fine silt Weight percent of the sample in the 8 phi fraction (nominal diameter of particles greater than or equal to 0.004mm, but less than 0.008mm); very fine silt Weight percent of the sample in the 9 phi fraction (nominal diameter of particles greater than or equal to 0.002mm, but less than 0.004mm); coarse clay Weight percent of the sample in the 10 phi fraction (nominal diameter of particles greater than or equal to 0.001mm, but less than 0.002mm); medium clay Weight percent of the sample in the 11 phi fraction (nominal diameter of particles greater than or equal to 0.5µm, but less than 0.001mm); fine clay Weight percent of the sample in the 12 phi fraction (nominal diameter of particles greater than or equal to 0.25µm, but less than 0.5µm); very fine clay Weight percent of the sample in the 13 phi fraction (nominal diameter of particles greater than or equal to 0.125µm, but less than 0.25µm) Weight percent of the sample in the 14 phi fraction (nominal diameter of particles greater than or equal to 0.125µm, but less than 0.0625µm) Weight percent of the sample in the 15 phi fraction (nominal diameter of particles greater than or equal to 0.0625µm, but less than 0.031µm)

Short_Field_Name PHI_16 PHI_17 PHI_18 PHI_19 PHI_20 PHI_21 PHI_22 CFP11 CFP10 CFP09 CFP08 CFP07 CFP06 CFP05 CFP04 CFP03 CFP02 CFP01 CFP00 CFPM1 CFPM2 CFPM3 CFPM4 CFPM5 ANALYST ANAL_COMM

Full Length Field Name 16 Phi 17 Phi 18 Phi 19 Phi 20 Phi 21 Phi 22 Phi Cfp11 Cfp10 Cfp09 Cfp08 Cfp07 Cfp06 Cfp05 Cfp04 Cfp03 Cfp02 Cfp01 Cfp00 Cfpm1 Cfpm2 Cfpm3 Cfpm4 Cfpm5 Analyst Comments on analyses

Field Description Weight percent of the sample in the 16 phi fraction (nominal diameter of particles greater than or equal to 0.031µm, but less than 0.0125µm) Weight percent of the sample in the 17 phi fraction (nominal diameter of particles greater than or equal to 0.0125µm, but less than 0.00625µm) Weight percent of the sample in the 18 phi fraction (nominal diameter of particles greater than or equal to 0.00625µm, but less than 0.0031µm) Weight percent of the sample in the 19 phi fraction (nominal diameter of particles greater than or equal to 0.0031µm, but less than 0.00125µm) Weight percent of the sample in the 20 phi fraction (nominal diameter of particles greater than or equal to 0.00125µm, but less than 0.625nm) Weight percent of the sample in the 21 phi fraction (nominal diameter of particles greater than or equal to 0.625nm, but less than 0.31nm) Weight percent of the sample in the 22 phi fraction (nominal diameter of particles greater than or equal to 0.31nm) Cumulative frequency percent of the 11 phi fraction and coarser (less than 0.001 mm) Cumulative frequency percent of the 10 phi fraction and coarser (less than 0.002 mm) Cumulative frequency percent of the 9 phi fraction and coarser (less than 0.004 mm) Cumulative frequency percent of the 8 phi fraction and coarser (less than 0.008 mm) Cumulative frequency percent of the 7 phi fraction and coarser (less than 0.0016 mm) Cumulative frequency percent of the 6 phi fraction and coarser (less than 0.031 mm) Cumulative frequency percent of the 5 phi fraction and coarser (less than 0.062 mm) Cumulative frequency percent of the 4 phi fraction and coarser (less than 0.125 mm) Cumulative frequency percent of the 3 phi fraction and coarser (less than 0.250 mm) Cumulative frequency percent of the 2 phi fraction and coarser (less than 0.5 mm) Cumulative frequency percent of the 1 phi fraction and coarser (less than 0.1 mm) Cumulative frequency percent of the 0 phi fraction and coarser (less than 2 mm) Cumulative frequency percent of the -1 phi fraction and coarser (less than 4 mm) Cumulative frequency percent of the -2 phi fraction and coarser (less than 8 mm) Cumulative frequency percent of the -3 phi fraction and coarser (less than 16 mm) Cumulative frequency percent of the -4 phi fraction and coarser (less than 32 mm) Cumulative frequency percent of the -5 phi fraction and coarser (entire distribution is usually less than 64 mm) Name (usually first initial and last name) of person who performed the grain size or physical properties analysis Any further information about sediment analysis for all or specific parameters in this table


				
DOCUMENT INFO
Shared By:
Tags: Dicti, onary
Stats:
views:113
posted:11/28/2009
language:English
pages:4
Description: Dictionary