Grain size and bulk density of sediment cores from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2016

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What does this data set describe?

Title:
Grain size and bulk density of sediment cores from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2016
Abstract:
Grain size distribution and bulk density are reported for sediment push cores from two flooded agricultural tracts, Little Holland Tract and Liberty Island, in the Sacramento-San Joaquin Delta, California. Push core samples were collected from 17 sites by the U.S Geological Survey in August, 2016. Each core was analyzed at multiple depths to investigate variations in particle sizes with depth below the sediment surface. The same sites were sampled previously in 2014 (https://www.sciencebase.gov/catalog/item/5a73a58fe4b0a9a2e9e172cf). These data provide insight into the variation of particle size distributions in space, bed depth, and time.
Supplemental_Information:
Information about the data collection field activities can be found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-646-FA
  1. How might this data set be cited?
    Lacy, Jessica R, Dailey, Evan T, and Carlson, Emily M, 2018, Grain size and bulk density of sediment cores from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2016: data release doi:10.5066/F7V1241K, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Lacy, Jessica R, Dailey, Evan T, and Carlson, Emily M, 2018, Bed sediment properties in Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2014 to 2017: data release doi:10.5066/F7V1241K, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -121.673911
    East_Bounding_Coordinate: -121.653289
    North_Bounding_Coordinate: 38.327370
    South_Bounding_Coordinate: 38.267560
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/5a73aa70e4b0a9a2e9e172de?name=LHT-LI_SampleMeans-2016_Depths.png&allowOpen=true (PNG)
    Image map showing average values of median grain size (excluding gravel) and ratio of sand, silt, and clay for samples 0 to 2 cm deep (left) and 4 to 5 cm deep (right) at each sampling location.
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 09-Jun-2016
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: Comma-separated values
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected in the Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California
      This is a Point data set.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1.0E-5. Longitudes are given to the nearest 1.0E-5. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    GrainsizeBD_LHT-LI_2016Cores.csv
    Table containing attribute information associated with the dataset (Source: Producer defined)
    FACS/FAN I.D.
    Unique U.S. Geological Survey field activity identifier. (Source: Producer defined) Unique U.S. Geological Survey field activity identifier.
    Sample I.D.
    Sample identifier (Source: Producer defined) Unique identifier for samples; assigned in the field.
    Lab I.D.
    Sample identifier for sediment lab, "NA" indicates that no value was assigned. (Source: Producer defined) Unique identifier for samples; assigned in the sediment lab.
    Date Collected
    Date in month/day/year format of sample collection. (Source: Producer defined)
    Range of values
    Minimum:06/09/2016
    Maximum:06/09/2016
    Units:Date in month/day/year format
    Time (PDT)
    Time of sample collection, in hours:minutes:seconds format, Pacific Daylight Time (PDT). (Source: Producer defined)
    Range of values
    Minimum:00:00:00
    Maximum:23:59:59
    Units:hours:minutes:seconds format, Pacific Daylight Time (PDT)
    Site
    Unique identifier of sampling locations. (Source: Producer defined) Unique identifier of sampling locations.
    Latitude
    Latitude of sample location in decimal degrees, north. (Source: Producer defined)
    Range of values
    Minimum:38.26756
    Maximum:38.32737
    Units:Decimal degrees
    Longitude
    Longitude of sample location in decimal degrees, east. (Source: Producer defined)
    Range of values
    Minimum:-121.6739111
    Maximum:-121.6532889
    Units:Decimal degrees
    Sample Type
    Type of sample collected (Source: Producer defined)
    ValueDefinition
    section of push coreSample collected with push core
    Core Depth
    The midpoint of the depth into the sediment bed of the sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.25
    Maximum:17
    Units:centimeters
    Thickness
    The thickness (starting depth to the ending depth) of the sediment core sampled, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.25
    Maximum:2
    Units:centimeters
    Wt. percent in -4.00 phi bin or 16 mm bin
    Weight percent of sample with grain diameter greater than -4.00 phi, or 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -3.75 phi bin or 13.5 mm bin
    Weight percent of sample with grain diameter between -4.00 and -3.75 phi, or 13.5 and 16 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -3.50 phi bin or 11.2 mm bin
    Weight percent of sample with grain diameter between -3.75 and -3.50 phi, or 11.2 and 13.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -3.25 phi bin or 9.51 mm bin
    Weight percent of sample with grain diameter between -3.50 and -3.25 phi, or 9.51 and 11.2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -3.00 phi bin or 8 mm bin
    Weight percent of sample with grain diameter between -3.25 and -3.00 phi, or 8 and 9.51 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in -2.75 phi bin or 6.73 mm bin
    Weight percent of sample with grain diameter between -3.00 and -2.75 phi, or 6.73 and 8 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.328633
    Units:percentage
    Wt. percent in -2.50 phi bin or 5.66 mm bin
    Weight percent of sample with grain diameter between -2.75 and -2.50 phi, or 5.66 and 6.73 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.147675
    Units:percentage
    Wt. percent in -2.25 phi bin or 4.76 mm bin
    Weight percent of sample with grain diameter between -2.50 and -2.25 phi, or 4.76 and 5.66 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.257494
    Units:percentage
    Wt. percent in -2.00 phi bin or 4 mm bin
    Weight percent of sample with grain diameter between -2.25 and -2.00 phi, or 4 and 4.76 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.924268
    Units:percentage
    Wt. percent in -1.75 phi bin or 3.36 mm bin
    Weight percent of sample with grain diameter between -2.00 and -1.75 phi, or 3.36 and 4 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.745835
    Units:percentage
    Wt. percent in -1.50 phi bin or 2.83 mm bin
    Weight percent of sample with grain diameter between -1.75 and -1.50 phi, or 2.83 and 3.36 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.387455
    Units:percentage
    Wt. percent in -1.25 phi bin or 2.38 mm bin
    Weight percent of sample with grain diameter between -1.50 and -1.25 phi, or 2.38 and 2.83 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.947667
    Units:percentage
    Wt. percent in -1.00 phi bin or 2 mm bin
    Weight percent of sample with grain diameter between -1.25 and -1.00 phi, or 2 and 2.38 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.144214
    Units:percentage
    Wt. percent in -0.75 phi bin or 1.68 mm bin
    Weight percent of sample with grain diameter between -1.00 and -0.75 phi, or 1.68 and 2 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.459125
    Units:percentage
    Wt. percent in -0.50 phi bin or 1.41 mm bin
    Weight percent of sample with grain diameter between -0.75 and -0.50 phi, or 1.41 and 1.68 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.500913
    Units:percentage
    Wt. percent in -0.25 phi bin or 1.19 mm bin
    Weight percent of sample with grain diameter between -0.50 and -0.25 phi, or 1.19 and 1.41 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.497431
    Units:percentage
    Wt. percent in 0.00 phi bin or 1 mm bin
    Weight percent of sample with grain diameter between -0.25 and 0.00 phi, or 1 and 1.19 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.493949
    Units:percentage
    Wt. percent in 0.25 phi bin or 0.8409 mm bin
    Weight percent of sample with grain diameter between 0.00 and 0.25 phi, or 0.8409 and 1 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.614636
    Units:percentage
    Wt. percent in 0.50 phi bin or 0.7071 mm bin
    Weight percent of sample with grain diameter between 0.25 and 0.50 phi, or 0.7071 and 0.8409 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.683834
    Units:percentage
    Wt. percent in 0.75 phi bin or 0.5946 mm bin
    Weight percent of sample with grain diameter between 0.50 and 0.75 phi, or 0.5946 and 0.7071 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:1.923723
    Units:percentage
    Wt. percent in 1.00 phi bin or 0.5 mm bin
    Weight percent of sample with grain diameter between 0.75 and 1.00 phi, or 0.5 and 0.5946 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.763841
    Units:percentage
    Wt. percent in 1.25 phi bin or 0.4204 mm bin
    Weight percent of sample with grain diameter between 1.00 and 1.25 phi, or 0.4204 and 0.5 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.000075
    Maximum:4.06385
    Units:percentage
    Wt. percent in 1.50 phi bin or 0.3536 mm bin
    Weight percent of sample with grain diameter between 1.25 and 1.50 phi, or 0.3536 and 0.4204 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.003463
    Maximum:5.067922
    Units:percentage
    Wt. percent in 1.75 phi bin or 0.2973 mm bin
    Weight percent of sample with grain diameter between 1.50 and 1.75 phi, or 0.2973 and 0.3536 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.00046
    Maximum:5.548819
    Units:percentage
    Wt. percent in 2.00 phi bin or 0.25 mm bin
    Weight percent of sample with grain diameter between 1.75 and 2.00 phi, or 0.25 and 0.2973 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.001232
    Maximum:5.495974
    Units:percentage
    Wt. percent in 2.25 phi bin or 0.2102 mm bin
    Weight percent of sample with grain diameter between 2.00 and 2.25 phi, or 0.2102 and 0.25 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.023666
    Maximum:6.295424
    Units:percentage
    Wt. percent in 2.50 phi bin or 0.1768 mm bin
    Weight percent of sample with grain diameter between 2.25 and 2.50 phi, or 0.1768 and 0.2102 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.010008
    Maximum:7.578957
    Units:percentage
    Wt. percent in 2.75 phi bin or 0.1487 mm bin
    Weight percent of sample with grain diameter between 2.50 and 2.75 phi, or 0.1487 and 0.1768 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.034552
    Maximum:8.190163
    Units:percentage
    Wt. percent in 3.00 phi bin or 0.125 mm bin
    Weight percent of sample with grain diameter between 2.75 and 3.00 phi, or 0.125 and 0.1487 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.013475
    Maximum:7.70128
    Units:percentage
    Wt. percent in 3.25 phi bin or 0.1051 mm bin
    Weight percent of sample with grain diameter between 3.00 and 3.25 phi, or 0.1051 and 0.125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.014718
    Maximum:6.186415
    Units:percentage
    Wt. percent in 3.50 phi bin or 0.08839 mm bin
    Weight percent of sample with grain diameter between 3.25 and 3.50 phi, or 0.08839 and 0.1051 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.026426
    Maximum:4.1724
    Units:percentage
    Wt. percent in 3.75 phi bin or 0.07433 mm bin
    Weight percent of sample with grain diameter between 3.50 and 3.75 phi, or 0.07433 and 0.08839 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.006803
    Maximum:2.571488
    Units:percentage
    Wt. percent in 4.00 phi bin or 0.0625 mm bin
    Weight percent of sample with grain diameter between 3.75 and 4.00 phi, or 0.0625 and 0.07433 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.005952
    Maximum:2.604711
    Units:percentage
    Wt. percent in 4.25 phi bin or 0.052556 mm bin
    Weight percent of sample with grain diameter between 4.00 and 4.25 phi, or 0.052556 and 0.0625 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:2.685189
    Units:percentage
    Wt. percent in 4.50 phi bin or 0.044194 mm bin
    Weight percent of sample with grain diameter between 4.25 and 4.50 phi, or 0.044194 and 0.052556 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:3.011711
    Units:percentage
    Wt. percent in 4.75 phi bin or 0.037163 mm bin
    Weight percent of sample with grain diameter between 4.50 and 4.75 phi, or 0.037163 and 0.044194 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:4.123051
    Units:percentage
    Wt. percent in 5.00 phi bin or 0.03125 mm bin
    Weight percent of sample with grain diameter between 4.75 and 5.00 phi, or 0.03125 and 0.037163 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.014901
    Maximum:4.737546
    Units:percentage
    Wt. percent in 5.25 phi bin or 0.02628 mm bin
    Weight percent of sample with grain diameter between 5.00 and 5.25 phi, or 0.02628 and 0.03125 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.246745
    Maximum:4.780349
    Units:percentage
    Wt. percent in 5.50 phi bin or 0.0221 mm bin
    Weight percent of sample with grain diameter between 5.25 and 5.50 phi, or 0.0221 and 0.02628 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.720496
    Maximum:4.40946
    Units:percentage
    Wt. percent in 5.75 phi bin or 0.01858 mm bin
    Weight percent of sample with grain diameter between 5.50 and 5.75 phi, or 0.01858 and 0.0221 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.05607
    Maximum:4.164877
    Units:percentage
    Wt. percent in 6.00 phi bin or 0.01563 mm bin
    Weight percent of sample with grain diameter between 5.75 and 6.00 phi, or 0.01563 and 0.01858 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.977111
    Maximum:3.975961
    Units:percentage
    Wt. percent in 6.25 phi bin or 0.01314 mm bin
    Weight percent of sample with grain diameter between 6.00 and 6.25 phi, or 0.01314 and 0.01563 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.115289
    Maximum:3.894322
    Units:percentage
    Wt. percent in 6.50 phi bin or 0.01105 mm bin
    Weight percent of sample with grain diameter between 6.25 and 6.50 phi, or 0.01105 and 0.01314 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.57062
    Maximum:3.919232
    Units:percentage
    Wt. percent in 6.75 phi bin or 0.00929 mm bin
    Weight percent of sample with grain diameter between 6.50 and 6.75 phi, or 0.00929 and 0.01105 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.730802
    Maximum:4.087987
    Units:percentage
    Wt. percent in 7.00 phi bin or 0.00781 mm bin
    Weight percent of sample with grain diameter between 6.75 and 7.00 phi, or 0.00781 and 0.00929 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.843058
    Maximum:4.672286
    Units:percentage
    Wt. percent in 7.25 phi bin or 0.00657 mm bin
    Weight percent of sample with grain diameter between 7.00 and 7.25 phi, or 0.00657 and 0.00781 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.907387
    Maximum:5.489883
    Units:percentage
    Wt. percent in 7.50 phi bin or 0.00552 mm bin
    Weight percent of sample with grain diameter between 7.25 and 7.50 phi, or 0.00552 and 0.00657 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.951646
    Maximum:6.178387
    Units:percentage
    Wt. percent in 7.75 phi bin or 0.00465 mm bin
    Weight percent of sample with grain diameter between 7.50 and 7.75 phi, or 0.00465 and 0.00552 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.910282
    Maximum:6.488621
    Units:percentage
    Wt. percent in 8.00 phi bin or 0.00391 mm bin
    Weight percent of sample with grain diameter between 7.75 and 8.00 phi, or 0.00391 and 0.00465 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.885707
    Maximum:6.780561
    Units:percentage
    Wt. percent in 8.25 phi bin or 0.00329 mm bin
    Weight percent of sample with grain diameter between 8.00 and 8.25 phi, or 0.00329 and 0.00391 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.827939
    Maximum:6.938478
    Units:percentage
    Wt. percent in 8.50 phi bin or 0.00276 mm bin
    Weight percent of sample with grain diameter between 8.25 and 8.50 phi, or 0.00276 and 0.00329 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.694776
    Maximum:6.721343
    Units:percentage
    Wt. percent in 8.75 phi bin or 0.00232 mm bin
    Weight percent of sample with grain diameter between 8.50 and 8.75 phi, or 0.00232 and 0.00276 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.596416
    Maximum:6.573295
    Units:percentage
    Wt. percent in 9.00 phi bin or 0.00195 mm bin
    Weight percent of sample with grain diameter between 8.75 and 9.00 phi, or 0.00195 and 0.00232 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.484322
    Maximum:6.30681
    Units:percentage
    Wt. percent in 9.25 phi bin or 0.00164 mm bin
    Weight percent of sample with grain diameter between 9.00 and 9.25 phi, or 0.00164 and 0.00195 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.365056
    Maximum:5.941627
    Units:percentage
    Wt. percent in 9.50 phi bin or 0.00138 mm bin
    Weight percent of sample with grain diameter between 9.25 and 9.50 phi, or 0.00138 and 0.00164 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.247236
    Maximum:5.546835
    Units:percentage
    Wt. percent in 9.75 phi bin or 0.00116 mm bin
    Weight percent of sample with grain diameter between 9.50 and 9.75 phi, or 0.00116 and 0.00138 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.137425
    Maximum:5.161912
    Units:percentage
    Wt. percent in 10.00 phi bin or 0.00098 mm bin
    Weight percent of sample with grain diameter between 9.75 and 10.00 phi, or 0.00098 and 0.00116 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.975023
    Maximum:4.520374
    Units:percentage
    Wt. percent in 10.25 phi bin or 0.00082 mm bin
    Weight percent of sample with grain diameter between 10.00 and 10.25 phi, or 0.00082 and 0.00098 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.882901
    Maximum:4.19467
    Units:percentage
    Wt. percent in 10.50 phi bin or 0.00069 mm bin
    Weight percent of sample with grain diameter between 10.25 and 10.50 phi, or 0.00069 and 0.00082 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.693705
    Maximum:3.444098
    Units:percentage
    Wt. percent in 10.75 phi bin or 0.00058 mm bin
    Weight percent of sample with grain diameter between 10.50 and 10.75 phi, or 0.00058 and 0.00069 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.537253
    Maximum:2.759403
    Units:percentage
    Wt. percent in 11.00 phi bin or 0.00049 mm bin
    Weight percent of sample with grain diameter between 10.75 and 11.00 phi, or 0.00049 and 0.00058 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.358978
    Maximum:1.910434
    Units:percentage
    Wt. percent in 11.25 phi bin or 0.0004 mm bin
    Weight percent of sample with grain diameter between 11.00 and 11.25 phi, or 0.0004 and 0.00049 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.19849
    Maximum:1.080667
    Units:percentage
    Wt. percent in 11.50 phi bin or 0.00035 mm bin
    Weight percent of sample with grain diameter between 11.25 and 11.50 phi, or 0.00035 and 0.0004 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.046704
    Maximum:0.250836
    Units:percentage
    Wt. percent in 12.00 phi bin or 0.000241 mm bin
    Weight percent of sample with grain diameter between 11.50 and 12.00 phi, or 0.000241 and 0.00035 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Wt. percent in 13.00 phi bin or 0.00012 mm bin
    Weight percent of sample with grain diameter between 12.00 and 13.00 phi, or 0.00012 and 0.000241 mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.0
    Units:percentage
    Percent Gravel
    Percent of sample greater than 2 mm, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:7.726692
    Units:Percentage
    Percent Sand
    Percent of sample less than 2 mm and greater than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.654505
    Maximum:61.241631
    Units:Percentage
    Percent Silt
    Percent of sample less than 63 microns and greater than 4 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:24.712145
    Maximum:56.611514
    Units:Percentage
    Percent Clay
    Percent of sample less than 4 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:14.046225
    Maximum:61.034923
    Units:Percentage
    Percent Mud
    Percent of sample less than 63 microns, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:38.758369
    Maximum:99.345495
    Units:Percentage
    Gravel/Sand
    Ratio of gravel to sand in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.333
    Sand/Silt
    Ratio of sand to silt in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.016
    Maximum:2.478
    Silt/Clay
    Ratio of silt to clay in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.617
    Maximum:2.234
    Sand/Clay
    Ratio of sand to clay in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.011
    Maximum:4.36
    Sand/Mud
    Ratio of sand to mud in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.007
    Maximum:1.58
    Gravel/Mud
    Ratio of gravel to mud in sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.0
    Maximum:0.123
    D5 Phi
    Phi size at D5 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-1.471
    Maximum:6.088
    Units:Phi size
    D10 Phi
    Phi size at D10 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:-0.344
    Maximum:6.704
    Units:Phi size
    D16 Phi
    Phi size at D16 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:0.654
    Maximum:7.065
    Units:Phi size
    D25 Phi
    Phi size at D25 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:1.724
    Maximum:7.47
    Units:Phi size
    D50 Phi
    Phi size at D50 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:3.122
    Maximum:8.406
    Units:Phi size
    D75 Phi
    Phi size at D75 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:6.541
    Maximum:9.412
    Units:Phi size
    D84 Phi
    Phi size at D84 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:7.74
    Maximum:9.863
    Units:Phi size
    D90 Phi
    Phi size at D90 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:8.583
    Maximum:10.218
    Units:Phi size
    D95 Phi
    Phi size at D95 for sample, "NA" indicates that no value was calculated. (Source: Producer defined)
    Range of values
    Minimum:9.467
    Maximum:10.59
    Units:Phi size
    F-W Median
    Phi size median for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.122012
    Maximum:8.406335
    Units:Phi size
    F-W Mean
    Phi size mean for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:4.211503
    Maximum:8.44062
    Units:Phi size
    F-W Sorting
    sorting for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.375542
    Maximum:3.635318
    Units:Phi size
    F-W Skewness
    skewness for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.44403
    Maximum:0.556594
    Units:Phi size
    F-W Kurtosis
    Kurtosis for sample by Folk and Ward (1957) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.631154
    Maximum:1.274627
    Units:Phi size
    Inman Median
    Phi size median for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:3.122012
    Maximum:8.406335
    Units:Phi size
    Inman Mean
    Phi size mean for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:4.570083
    Maximum:8.457763
    Units:Phi size
    Inman Sorting
    sorting for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.393141
    Maximum:3.915893
    Units:Phi size
    Inman Skew 16-84
    skewness for sample (D16-D84) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.461399
    Maximum:0.593881
    Units:Phi size
    Inman Skew 05-95
    skewness for sample (D5-D95) by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-0.81492
    Maximum:0.748551
    Units:Phi size
    Inman Kurtosis
    Kurtosis for sample by Inman (1952) method, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.255739
    Maximum:1.111433
    Units:Phi size
    Trask Median
    mm size median for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.002947
    Maximum:0.114863
    Units:millimeters
    Trask Mean
    mm size mean for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.003554
    Maximum:0.155367
    Units:millimeters
    Trask Sorting
    sorting for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.960514
    Maximum:8.673112
    Units:millimeters
    Trask Skewness
    skewness for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.164853
    Maximum:7.697622
    Units:millimeters
    Trask Kurtosis
    kurtosis for sample by Trask (1930) method in mm, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.033209
    Maximum:0.290439
    Units:millimeters
    Mean Phi
    phi size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:4.23711
    Maximum:8.353344
    Units:Phi size
    Mean mm
    mm size mean for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:0.003058
    Maximum:0.053028
    Units:millimeters
    Variance
    variance for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:2.036429
    Maximum:13.756656
    Units:Phi size
    Std. Dev.
    standard deviation for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.427035
    Maximum:3.708997
    Units:Phi size
    Skewness
    skewness for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-1.53608
    Maximum:0.740201
    Units:Phi size
    Kurtosis
    kurtosis for sample, "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:1.613986
    Maximum:7.120855
    Units:Phi size
    Mode in Phi
    Mode or modes of sample in phi units. If sample was multi-modal, multiple mode values reported, separated by semicolon. "NA" indicates that no value was calculated. (Source: producer defined)
    Range of values
    Minimum:-2.375
    Maximum:8.377
    Units:Phi size
    Bag Weight
    The weight of the empty sample bag. (Source: producer defined)
    Range of values
    Minimum:3.21
    Maximum:3.39
    Units:grams
    Bag and Wet Sediment Weight
    The weight of the initial wet sample, as it was collected in the sample bag. (Source: producer defined)
    Range of values
    Minimum:13.3
    Maximum:91.11
    Units:grams
    Dry Sediment Weight
    The weight of the dried sediment in the sample. (Source: producer defined)
    Range of values
    Minimum:5.04
    Maximum:55.94
    Units:grams
    Bulk Density
    The bulk density of the sample, calculated as the mass of the dry sediment divided by the volume of the initial sample. (Source: producer defined)
    Range of values
    Minimum:1.284458
    Maximum:1.944814
    Units:grams per cubic centimeter

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Jessica R Lacy
    • Evan T Dailey
    • Emily M Carlson
  2. Who also contributed to the data set?
    Data collection was funded by U.S. Geological Survey and U.S. Bureau of Reclamation
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA
    United States

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

These data will be used to inform studies of sediment resuspension and transport in Liberty Island and Little Holland Tract and to evaluate the potential for flooded agricultural tracts to contribute to elevated turbidity in adjacent waters.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: Jun-2016 (process 1 of 5)
    Sediment samples were collected on June 9, 2016 using a push core sampler. Sampling positions were recorded using a hand-held global navigation satellite system (GNSS) receiver.
    Date: Aug-2016 (process 2 of 5)
    The grain-size distributions of samples were determined in the USGS Pacific Coastal and Marine Science Center sediment lab. Approximately 20 g of sediment was sub-sampled and 10 mL of 35 percent hydrogen peroxide was added to remove organic material in the sample. The sample was heated at 250 degrees C to remove any remaining hydrogen peroxide and was placed in an ultrasonic bath to liberate the fine fraction. Subsequently, the sample was centrifuged for 1.5 hours to remove soluble salts. Samples were funneled through a 2 mm and a 63 um sieve to separate the gravel (greater than 2 mm), sand (63 um to 2 mm), and mud (less than 63 um). The sand and gravel fractions were dried in an 80 degree C oven and weighed. Five mL of sodium hexametaphosphate was added to the mud fraction and a 20 mL aliquot was taken from a 1 L graduated cylinder to determine the weight of the mud. The particle-size distribution of the mud and sand fractions was analyzed separately using a Beckman Coulter LS 13 320, and the gravel, sand, and mud results were integrated into a single grain-size distribution for each sample. Where used, phi sizes are equal to the negative log base 2 of millimeter size.
    Date: Aug-2016 (process 3 of 5)
    Bulk density was calculated by weighing the sample bag, the wet sample in the bag, and the dry sample in the bag. Measurements were made in the USGS Pacific Coastal and Marine Science Center sediment lab. The bulk density reported here was calculated as: water density (1 g/cm3) times sediment density (2.65 g/cm3) divided by water density plus the product of sediment density minus sediment density and water content of the sample.
    Date: 17-Jul-2018 (process 4 of 5)
    Corrected name of theme keyword thesaurus from ISO 19115 Topic Categories to Category. Updated contact information to bring up to USGS PCMSC standards. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
    Date: 05-Sep-2018 (process 5 of 5)
    Corrected Point of Contact and Metadata Contact phone number prefix. No data were changed. Person who carried out this activity:
    Susan A Cochran
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission St.
    Santa Cruz, CA
    United States

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?
    Lacy, Jessica R, and Carlson, Emily M, 2016, Wind-wave and suspended-sediment data from Liberty Island and Little Holland Tract, Sacramento-San Joaquin Delta, California: data release doi:10.5066/F73R0R07, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Snyder, Alex G, Stevens, Andrew W, Carlson, Emily M, and Lacy, Jessica R, 2016, Digital elevation model of Little Holland Tract, Sacramento-San Joaquin Delta, California, 2015: data release doi:10.5066/F7RX9954, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Folk, Robert Louis, and Ward, William C., 1957, Brazos River bar; a study in the significance of grain size parameters: Journal article Journal of Sedimentary Research, v. 27, n. 1, p. 3-26, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Inman, Douglas Lamar, 1952, Measures for describing the size distribution of sediments: Journal article Journal of Sedimentary Research, v. 22, n. 3, p. 125-145, SEPM Society for Sedimentary Geology, Boulder, CO.

    Online Links:

    Trask, Parker D., 1930, Mechanical analyses of sediments by centrifuge: Journal article Economic Geology, v. 26, n. 6, p. 581-599, Society of Economic Geologists (SEG), Littleton, CO.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Data values are within the expected values.
  2. How accurate are the geographic locations?
    Horizontal accuracy derived from GPS instrumentation is less than 1 m.
  3. How accurate are the heights or depths?
    No formal positional accuracy tests were conducted
  4. Where are the gaps in the data? What is missing?
    Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    Data values are within the expected values.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey (USGS) as the originator of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    U.S. Geological Survey
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    United States

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in csv format (GrainSizeBD_LHT-LI_2016Cores.csv) along with CSDGM FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    The data is available in comma-separated values (CSV) spreadsheet format. Text editing software can be used to open the file, as well as spreadsheet programs, such as Microsoft Excel.

Who wrote the metadata?

Dates:
Last modified: 05-Sep-2018
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA
United States

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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