Geochemistry of sediment subsamples from gravity cores and push cores from the Escanaba Trough (Gorda Ridge)

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What does this data set describe?

Title:
Geochemistry of sediment subsamples from gravity cores and push cores from the Escanaba Trough (Gorda Ridge)
Abstract:
This portion of the data release contains geochemical data of sediment subsamples from push cores and gravity cores collected from the Escanaba Trough vent field, Gorda Ridge, in the northeast Pacific Ocean. These data were collected in 2022 (USGS Field Activity 2022-621-FA). Data include major, minor, and trace element concentrations, location information (latitude, longitude, depth), analytical methods, and instrument detection limits where available.
Supplemental_Information:
Additional information about the field activity or activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-621-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Adamczyk, Katlin Bowman, Gartman, Amy, Favela, Jaycee, and Tidwell, Jacob, 20250317, Geochemistry of sediment subsamples from gravity cores and push cores from the Escanaba Trough (Gorda Ridge): data release DOI:10.5066/P13B46QX, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Adamczyk, Katlin Bowman, Gartman, Amy, Favela, Jaycee, and Tidwell, Jacob, 2025, Computed tomography (CT) scans, photographs, geochemistry, grain-size analysis, X-ray fluorescence (XRF) scans, X-ray diffraction (XRD), magnetic susceptibility, and gamma-ray bulk density data of gravity cores and push cores from the Escanaba Trough (Gorda Ridge): data release DOI:10.5066/P13B46QX, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Other_Citation_Details:
    Suggested Citation: Adamczyk, K., Gartman, A., Favela, J., and Tidwell, J., 2025, Computed tomography (CT) scans, photographs, geochemistry, grain-size analysis, X-ray fluorescence (XRF) scans, X-ray diffraction (XRD), magnetic susceptibility, and gamma-ray bulk density data of gravity cores and push cores from the Escanaba Trough (Gorda Ridge): U.S. Geological Survey data release, https://doi.org/10.5066/P13B46QX.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -127.5357
    East_Bounding_Coordinate: -127.4076
    North_Bounding_Coordinate: 41.1632
    South_Bounding_Coordinate: 40.6957
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/670957a2d34e969edc5a2a9b?name=geochemistry.jpg&allowOpen=true (JPEG)
    Push core sediment collection with a remotely operated vehicle.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 12-Jul-2022
    Ending_Date: 29-Nov-2023
    Currentness_Reference:
    Time data were compiled to completion of the last process step
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited text
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (78)
    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 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.
  7. How does the data set describe geographic features?
    TN403_SedimentGeochemistry.csv
    Comma-delimited file containing results from geochemical analyses of marine sediment samples at the latitude, longitude, and water depth of each sample location. The value -8888 indicates that the measurement for an analyte was below the detection limit, and the value of -7777 indicates that the measurement for an analyte was above the detection limit. (Source: Producer defined)
    Cruise_ID
    The alphanumeric cruise identifier for the expedition during which the sample was collected (Source: producer defined)
    ValueDefinition
    TN403Cruise identifier for the Escanaba Trough expedition onboard the R/V Thomas G. Thompson in 2022
    Sample_ID
    The sample ID for each sample (Source: Producer defined) Sample IDs for gravity cores are formatted as GC#-section (for example, GC08-X is gravity core 08 section X). Gravity core sections are 'X' (0-60 cm), 'Y' (60-120 cm), and 'Z' (>120 cm). Sample IDs for push cores are formatted as Dive#-PushCore# (for example, J2-1418-PC03 is ROV Jason dive number J2-1418, push core number 03).
    Subsample_Depth_Interval
    The subsample depth interval for each sample (Source: Producer defined) The depth interval, measured in centimeters from the top of the sediment-water interface in push cores and gravity core 'X' sections, or the top of the core liner for gravity core 'Y' and 'Z' sections. For example, GC06-Z-0–2 represents 0–2 cm in section Z of gravity core 06; 0 cm here is the top of section Z, not the sediment-water interface of the entire gravity core. Text appended after the sediment depth interval (such as _brown) are notable color descriptions of the material.
    Latitude
    Latitude at which sample was collected (Source: TN403_CoreLocations)
    Range of values
    Minimum:40.6957
    Maximum:41.1632
    Units:decimal degrees
    Resolution:.0001
    Longitude
    Longitude at which sample was collected (Source: TN403_CoreLocations)
    Range of values
    Minimum:-127.5357
    Maximum:-127.4076
    Units:decimal degrees
    Resolution:.0001
    Water_Depth
    Water depth in meters at which the sample was collected (Source: TN403_CoreLocations)
    Range of values
    Minimum:3201
    Maximum:3304
    Units:meters
    Resolution:1
    Fe
    Iron concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:34300
    Maximum:562000
    Units:parts per million
    Resolution:1
    Mn
    Manganese concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:29
    Maximum:34200
    Units:parts per million
    Resolution:1
    Si
    Silicon concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1700
    Maximum:305000
    Units:parts per million
    Resolution:1
    Al
    Aluminum concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:500
    Maximum:87900
    Units:parts per million
    Resolution:1
    Mg
    Magnesium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:700
    Maximum:84800
    Units:parts per million
    Resolution:1
    Ca
    Calcium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:300
    Maximum:24400
    Units:parts per million
    Resolution:1
    Na
    Sodium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:3600
    Maximum:38300
    Units:parts per million
    Resolution:1
    K
    Potassium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:3000
    Maximum:25000
    Units:parts per million
    Resolution:1
    Ti
    Titanium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:100
    Maximum:4800
    Units:parts per million
    Resolution:1
    S
    Sulfur concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1100
    Maximum:364000
    Units:parts per million
    Resolution:1
    Ag
    Silver concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry.)
    Range of values
    Minimum:16
    Maximum:35
    Units:parts per million
    Resolution:1
    As
    Arsenic concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2.0
    Maximum:5750.0
    Units:parts per million
    Resolution:.1
    B
    Boron concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:10
    Maximum:300
    Units:parts per million
    Resolution:1
    Ba
    Barium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:500
    Maximum:64800
    Units:parts per million
    Resolution:1
    Be
    Beryllium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry) Values of -8888 indicate that the measurement was below the detection limit (<3 ppm).
    Bi
    Bismuth concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2
    Maximum:314
    Units:parts per million
    Resolution:1
    Br
    Bromine concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:24.5
    Maximum:242.0
    Units:parts per million
    Resolution:.1
    Cd
    Cadmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2
    Maximum:32
    Units:parts per million
    Resolution:1
    Co
    Cobalt concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:5
    Maximum:981
    Units:parts per million
    Resolution:1
    Cr
    Chromium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:15
    Maximum:209
    Units:parts per million
    Resolution:1
    Cs
    Caesium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:10.2
    Units:parts per million
    Resolution:.1
    Cu
    Copper concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:23
    Maximum:18400
    Units:parts per million
    Resolution:1
    Ga
    Gallium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:3.3
    Maximum:38.9
    Units:parts per million
    Resolution:.1
    Ge
    Germanium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.8
    Maximum:43.0
    Units:parts per million
    Resolution:.1
    Hf
    Hafnium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1
    Maximum:6
    Units:parts per million
    Resolution:1
    Hg
    Mercury concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.026
    Maximum:18.000
    Units:parts per million
    Resolution:.001
    In
    Indium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.2
    Maximum:15.3
    Units:parts per million
    Resolution:.1
    Li
    Lithium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:16
    Maximum:78
    Units:parts per million
    Resolution:1
    Mo
    Molybdenum concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:3
    Maximum:152
    Units:parts per million
    Resolution:1
    Nb
    Niobium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2.4
    Maximum:16.4
    Units:parts per million
    Resolution:.1
    Ni
    Nickel concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:40
    Maximum:340
    Units:parts per million
    Resolution:1
    Pb
    Lead concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:9.9
    Maximum:3660.0
    Units:parts per million
    Resolution:.1
    Rb
    Rubidium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1.1
    Maximum:121.0
    Units:parts per million
    Resolution:.1
    Sb
    Antimony concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.5
    Maximum:206.0
    Units:parts per million
    Resolution:.1
    Sc
    Scandium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.6
    Maximum:19.9
    Units:parts per million
    Resolution:.1
    Se
    Selenium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:8
    Maximum:370
    Units:parts per million
    Resolution:1
    Sn
    Tin concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1.7
    Maximum:291.0
    Units:parts per million
    Resolution:.1
    Sr
    Strontium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:95
    Maximum:1750
    Units:parts per million
    Resolution:1
    Ta
    Tantalum concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.2
    Maximum:2.4
    Units:parts per million
    Resolution:.1
    Te
    Tellurium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:7
    Maximum:17
    Units:parts per million
    Resolution:1
    Th
    Thorium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.2
    Maximum:11.1
    Units:parts per million
    Resolution:.1
    Tl
    Thallium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:14.7
    Units:parts per million
    Resolution:.1
    U
    Uranium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.9
    Maximum:47.2
    Units:parts per million
    Resolution:.1
    V
    Vanadium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:24
    Maximum:277
    Units:parts per million
    Resolution:1
    W
    Tungsten concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.8
    Maximum:6.7
    Units:parts per million
    Resolution:.1
    Zn
    Zinc concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:40
    Maximum:10000
    Units:parts per million
    Resolution:1
    Zr
    Zirconium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2
    Maximum:181
    Units:parts per million
    Resolution:1
    La
    Lanthanum concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:3.6
    Maximum:34.1
    Units:parts per million
    Resolution:.1
    Ce
    Cerium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:4.9
    Maximum:69.7
    Units:parts per million
    Resolution:.1
    Pr
    Praseodymium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.4
    Maximum:8.0
    Units:parts per million
    Resolution:.1
    Nd
    Neodymium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1.7
    Maximum:31.6
    Units:parts per million
    Resolution:.1
    Sm
    Samarium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.4
    Maximum:5.8
    Units:parts per million
    Resolution:.1
    Eu
    Europium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.5
    Maximum:17.0
    Units:parts per million
    Resolution:.1
    Gd
    Gadolinium concentration in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.3
    Maximum:6.2
    Units:parts per million
    Resolution:.1
    Tb
    Terbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:.8
    Units:parts per million
    Resolution:.1
    Dy
    Dysprosium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.4
    Maximum:4.8
    Units:parts per million
    Resolution:.1
    Y
    Yttrium content in each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.3
    Maximum:25.0
    Units:parts per million
    Resolution:.1
    Ho
    Holmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.2
    Maximum:1.0
    Units:parts per million
    Resolution:.1
    Er
    Erbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:3.0
    Units:parts per million
    Resolution:.1
    Tm
    Thulium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:.4
    Units:parts per million
    Resolution:.1
    Yb
    Ytterbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.1
    Maximum:3.0
    Units:parts per million
    Resolution:.1
    Lu
    Lutetium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.05
    Maximum:.41
    Units:parts per million
    Resolution:.01
    Au
    Gold concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:.006
    Maximum:3.060
    Units:parts per million
    Resolution:.001
    Ir
    Iridium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry) Values of -8888 indicate that the measurement was below the detection limit (<0.005 ppm).
    Fe_Detection
    The detection limit for iron concentration based on the measurement method and instrumentation (Source: Producer defined)
    Range of values
    Minimum:100
    Maximum:500
    Units:parts per million
    Resolution:100
    Mn_Detection
    The detection limit for manganese concentration based on the measurement method and instrumentation (Source: Producer defined)
    Range of values
    Minimum:3
    Maximum:100
    Units:parts per million
    Resolution:1
    Si_Detection
    The detection limit for silicon concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Al_Detection
    The detection limit for aluminum concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Mg_Detection
    The detection limit for magnesium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ca_Detection
    The detection limit for calcium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Na_Detection
    The detection limit for sodium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    K_Detection
    The detection limit for potassium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ti_Detection
    The detection limit for titanium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    S_Detection
    The detection limit for sulfur concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ag_Detection
    The detection limit for silver concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    As_Detection
    The detection limit for arsenic concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    B_Detection
    The detection limit for boron concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ba_Detection
    The detection limit for barium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Be_Detection
    The detection limit for beryllium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Bi_Detection
    The detection limit for bismuth concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Br_Detection
    The detection limit for bromine concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Cd_Detection
    The detection limit for cadmium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Co_Detection
    The detection limit for cobalt concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Cr_Detection
    The detection limit for chromium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Cs_Detection
    The detection limit for cesium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Cu_Detection
    The detection limit for copper concentration based on the measurement method and instrumentation (Source: Producer defined)
    Range of values
    Minimum:2
    Maximum:50
    Units:parts per million
    Resolution:1
    Ga_Detection
    The detection limit for gallium concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ge_Detection
    The detection limit for germanium concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Hf_Detection
    The detection limit for hafnium concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Hg_Detection
    The detection limit for mercury concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    In_Detection
    The detection limit for indium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Li_Detection
    The detection limit for lithium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Mo_Detection
    The detection limit for molybdenum concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Nb_Detection
    The detection limit for niobium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ni_Detection
    The detection limit for nickel concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Pb_Detection
    The detection limit for lead concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Rb_Detection
    The detection limit for rubidium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Sb_Detection
    The detection limit for antimony concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Sc_Detection
    The detection limit for scandium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Se_Detection
    The detection limit for selenium concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Sn_Detection
    The detection limit for tin concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Sr_Detection
    The detection limit for strontium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ta_Detection
    The detection limit for tantalum concentration based on the measurement method and instrumentation. Values of -9999 indicate that no analysis was performed. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Te_Detection
    The detection limit for tellurium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Th_Detection
    The detection limit for thorium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Tl_Detection
    The detection limit for thallium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    U_Detection
    The detection limit for uranium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    V_Detection
    The detection limit for vanadium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    W_Detection
    The detection limit for tungsten concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Zn_Detection
    The detection limit for zinc concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Zr_Detection
    The detection limit for zirconium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    La_Detection
    The detection limit for lanthanum concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ce_Detection
    The detection limit for cerium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Pr_Detection
    The detection limit for praseodymium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Nd_Detection
    The detection limit for neodymium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Sm_Detection
    The detection limit for samarium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Eu_Detection
    The detection limit for europium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Gd_Detection
    The detection limit for gadolinium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Tb_Detection
    The detection limit for terbium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Dy_Detection
    The detection limit for dysprosium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Y_Detection
    The detection limit for yttrium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ho_Detection
    The detection limit for holmium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Er_Detection
    The detection limit for erbium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Tm_Detection
    The detection limit for thulium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Yb_Detection
    The detection limit for ytterbium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Lu_Detection
    The detection limit for lutetium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Au_Detection
    The detection limit for gold concentration based on the measurement method and instrumentation. Values of -9999 indicate that no analysis was performed. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ir_Detection
    The detection limit for iridium concentration based on the measurement method and instrumentation. Values of -9999 indicate that no analysis was performed. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Fe_method
    An alphanumeric code that denotes the method and instrumentation used to measure iron concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    INAAInstrumental Neutron Activation Analysis
    Mn_method
    An alphanumeric code that denotes the method and instrumentation used to measure manganese concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion
    Si_method
    An alphanumeric code that denotes the method and instrumentation used to measure silicon concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Al_method
    An alphanumeric code that denotes the method and instrumentation used to measure aluminum concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Mg_method
    An alphanumeric code that denotes the method and instrumentation used to measure magnesium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ca_method
    An alphanumeric code that denotes the method and instrumentation used to measure calcium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Na_method
    An alphanumeric code that denotes the method and instrumentation used to measure sodium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    K_method
    An alphanumeric code that denotes the method and instrumentation used to measure potassium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ti_method
    An alphanumeric code that denotes the method and instrumentation used to measure titanium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    S_method
    An alphanumeric code that denotes the method and instrumentation used to measure sulfur concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ag_method
    An alphanumeric code that denotes the method and instrumentation used to measure silver concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    As_method
    An alphanumeric code that denotes the method and instrumentation used to measure arsenic concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    B_method
    An alphanumeric code that denotes the method and instrumentation used to measure boron concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ba_method
    An alphanumeric code that denotes the method and instrumentation used to measure barium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Be_method
    An alphanumeric code that denotes the method and instrumentation used to measure beryllium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Bi_method
    An alphanumeric code that denotes the method and instrumentation used to measure bismuth concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Br_method
    An alphanumeric code that denotes the method and instrumentation used to measure bromine concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Cd_method
    An alphanumeric code that denotes the method and instrumentation used to measure cadmium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Co_method
    An alphanumeric code that denotes the method and instrumentation used to measure cobalt concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Cr_method
    An alphanumeric code that denotes the method and instrumentation used to measure chromium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Cs_method
    An alphanumeric code that denotes the method and instrumentation used to measure caesium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Cu_method
    An alphanumeric code that denotes the method and instrumentation used to measure copper concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion
    Ga_method
    An alphanumeric code that denotes the method and instrumentation used to measure gallium concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ge_method
    An alphanumeric code that denotes the method and instrumentation used to measure germanium concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Hf_method
    An alphanumeric code that denotes the method and instrumentation used to measure hafnium concentration. (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Hg_method
    An alphanumeric code that denotes the method and instrumentation used to measure mercury concentration. (Source: Producer defined)
    ValueDefinition
    CVAASCold Vapor Atomic Absorption Spectroscopy
    In_method
    An alphanumeric code that denotes the method and instrumentation used to measure indium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Li_method
    An alphanumeric code that denotes the method and instrumentation used to measure lithium concentration based on the measurement method and instrumentation (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Mo_method
    An alphanumeric code that denotes the method and instrumentation used to measure molybdenum concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Nb_method
    An alphanumeric code that denotes the method and instrumentation used to measure niobium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ni_method
    An alphanumeric code that denotes the method and instrumentation used to measure nickel concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Pb_method
    An alphanumeric code that denotes the method and instrumentation used to measure lead concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Rb_method
    An alphanumeric code that denotes the method and instrumentation used to measure rubidium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Sb_method
    An alphanumeric code that denotes the method and instrumentation used to measure antimony concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Sc_method
    An alphanumeric code that denotes the method and instrumentation used to measure scandium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Se_method
    An alphanumeric code that denotes the method and instrumentation used to measure selenium concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Sn_method
    An alphanumeric code that denotes the method and instrumentation used to measure tin concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Sr_method
    An alphanumeric code that denotes the method and instrumentation used to measure strontium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ta_method
    An alphanumeric code that denotes the method and instrumentation used to measure tantalum concentration. (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Te_method
    An alphanumeric code that denotes the method and instrumentation used to measure tellurium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Th_method
    An alphanumeric code that denotes the method and instrumentation used to measure thorium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Tl_method
    An alphanumeric code that denotes the method and instrumentation used to measure thallium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    U_method
    An alphanumeric code that denotes the method and instrumentation used to measure uranium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    V_method
    An alphanumeric code that denotes the method and instrumentation used to measure vanadium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    W_method
    An alphanumeric code that denotes the method and instrumentation used to measure tungsten concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Zn_method
    An alphanumeric code that denotes the method and instrumentation used to measure zinc concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Zr_method
    An alphanumeric code that denotes the method and instrumentation used to measure zirconium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_FUSInductively Coupled Plasma Mass Spectrometry, Lithium Borate Fusion
    La_method
    An alphanumeric code that denotes the method and instrumentation used to measure lanthanum concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ce_method
    An alphanumeric code that denotes the method and instrumentation used to measure cerium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Pr_method
    An alphanumeric code that denotes the method and instrumentation used to measure praseodymium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Nd_method
    An alphanumeric code that denotes the method and instrumentation used to measure neodymium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Sm_method
    An alphanumeric code that denotes the method and instrumentation used to measure samarium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Eu_method
    An alphanumeric code that denotes the method and instrumentation used to measure europium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Gd_method
    An alphanumeric code that denotes the method and instrumentation used to measure gadolinium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Tb_method
    An alphanumeric code that denotes the method and instrumentation used to measure terbium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Dy_method
    An alphanumeric code that denotes the method and instrumentation used to measure dysprosium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Y_method
    An alphanumeric code that denotes the method and instrumentation used to measure yttrium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Ho_method
    An alphanumeric code that denotes the method and instrumentation used to measure holmium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Er_method
    An alphanumeric code that denotes the method and instrumentation used to measure erbium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Tm_method
    An alphanumeric code that denotes the method and instrumentation used to measure thulium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Yb_method
    An alphanumeric code that denotes the method and instrumentation used to measure ytterbium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion
    Lu_method
    An alphanumeric code that denotes the method and instrumentation used to measure lutetium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Au_method
    An alphanumeric code that denotes the method and instrumentation used to measure gold concentration. (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Ir_method
    An alphanumeric code that denotes the method and instrumentation used to measure iridium concentration. (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis
    Entity_and_Attribute_Overview: The first line of the csv file is a header line.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Katlin Bowman Adamczyk
    • Amy Gartman
    • Jaycee Favela
    • Jacob Tidwell
  2. Who also contributed to the data set?
    Exploring the Seafloor and Oceanic Footprints is an interagency effort involving the National Oceanic and Atmospheric Administration, the U.S. Geological Survey, and the Bureau of Ocean Energy Management. Funding is acknowledged from NOAA Ocean Exploration via its Ocean Exploration Fiscal Year 2019 Funding Opportunity and through the National Oceanographic Partnership Program (NOPP), from the USGS Coastal and Marine Hazards and Resources Enhanced Funding Opportunities, and from the Bureau of Ocean Energy Management through Interagency Agreement M19PG00021 with the United States Geological Survey.
  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

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

Why was the data set created?

Data were obtained to characterize downcore geochemical properties of sediments. These data are intended for science researchers, students, policy makers, and the general public.

How was the data set created?

  1. From what previous works were the data drawn?
    TN403_CoreLocations (source 1 of 2)
    Adamczyk, Katlin, Gartman, Amy, Favela, Jaycee, and Tidwell, Jacob, 2025, Location and water depth for gravity cores and push cores from the Escanaba Trough (Gorda Ridge): U.S. Geological Survey, online.

    Online Links:

    Type_of_Source_Media: U.S. Geological Survey data release
    Source_Contribution:
    Latitude, longitude, and water depth information for gravity cores and push cores from this same data release
    geochemistry (source 2 of 2)
    Actlabs, Ancaster, Ontario, Canada, 2022, Geochemical Element Analysis.

    Online Links:

    Type_of_Source_Media: geochemical analyses
    Source_Contribution:
    Geochemical analysis of sediment with Inductively Coupled Plasma Mass Spectrometry (sodium peroxide or lithium borate fusion), Instrumental Neutron Activation Analysis, and Cold Vapor Atomic Absorption Spectroscopy techniques.
  2. How were the data generated, processed, and modified?
    Date: 13-Jun-2022 (process 1 of 4)
    Push core and gravity core samples were collected on the R/V Thomas G. Thompson between May 24, 2022, and June 13, 2022, during the TN403 Escanaba Trough expedition, which was led and staffed by USGS employees. Push cores were pushed into sediment at 37 locations by ROV Jason’s manipulator arm in water depths between 3201 and 3301 meters. Gravity cores were collected using a gravity corer at 7 locations in water depths between 3209 and 3304 meters. Gravity cores greater than 60 cm in length were cut into sections onboard the ship and labeled ‘X’ (0-60 cm), ‘Y’ (60-120 cm), and ‘Z’ (>120 cm). All cores were stored upright and refrigerated until return to shore.
    Date: 20-Jun-2022 (process 2 of 4)
    In the USGS Pacific Coastal and Marine Science Center (PCMSC) Core Preparation and Analysis Laboratory, subsamples were collected from relevant stratigraphic regions of the core. Pelagic clay and organic-rich sediments were air-dried and sulfidic sediments were dried in a glove bag purged with nitrogen gas. Dried sediment was ground to a powder using a mortar and pestle.
    Date: 25-Jun-2022 (process 3 of 4)
    Approximately 10 grams of each sample was mailed to ACTLabs in individual plastic screw-top containers. All geochemical analyses were performed by ActLabs.
    Date: 29-Nov-2023 (process 4 of 4)
    Results from lab analyses, detection limits, analytical method information, location data, cruise identification, and location data were combined into a comma-delimited text value document (TN403_SedimentGeochemistry.csv). Person who carried out this activity:
    Katlin Adamczyk
    USGS
    Physical Scientist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7420 (voice)
    kadamczyk@usgs.gov
    Data sources used in this process:
    • TN403_CoreLocations
    • geochemistry
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    Certified reference materials, including PACS-3 (marine sediment certified by National Research Council Canada), were measured for all reported elements except Ag, B, Br, Cr, Ge, Ir, Lu, Na, Sc. The average relative percent difference (RPD) between measured and certified concentrations was 10–20 percent for Dy, Ta, Sr, Ni, Se, W, and Tm. Higher RPDs (>20 percent) were observed for Be and Hf. Average RPDs were <10 percent for Al, As, Au, Ba, Bi, Ca, Cd, Ce, Co, Cs, Cu, Er, Eu, Fe, Ga, Gd, Hg, Ho, In, K, La, Li, Mg, Mn, Mo, Nb, Nd, Pb, Pr, Rb, S, Sb, Si, Sm, Sn, Tb, Te, Th, Ti, Tl, U, V, Y, Yb, Zn, Zr. Duplicate measurements were made for all elements except Ag, B, Br, Cr, Ge, Ir, Lu, Na, and Sc. The average RPD between duplicate measurements was 10–20 percent for Dy, Ta, Sr, Ni, Se, W, Tm. Higher RPDs (>20 percent) were observed for Be and Hf. Average RPDs were <10 percent for Al, As, Au, Ba, Bi, Ca, Cd, Ce, Co, Cs, Cu, Er, Eu, Fe, Ga, Gd, Hg, Ho, In, K, La, Li, Mg, Mn, Mo, Nb, Nd, Pb, Pr, Rb, S, Sb, Si, Sm, Sn, Tb, Te, Th, Ti, Tl, U, V, Y, Yb, Zn, and Zr. The instruments and techniques used to generate the geochemical data are included in the data table and also summarized below in a Source Citation since data were generated by a commercial laboratory. Limits for each analyte's detection by an instrument are reported in the table. The value -8888 indicates that the measurement for an analyte was below the detection limit and the value -7777 indicates that the measurement for an analyte was above the detection limit.
  2. How accurate are the geographic locations?
    The locations of push core samples were determined using ROV Jason’s ultra-short baseline (USBL) navigation. Accuracy for this depth is approximately 6-26 m. The locations of gravity core samples were determined using the R/V Thomas G. Thompson’s GPS navigation, which is accurate to less than 5 m. A formal accuracy assessment of the horizontal positional information in the dataset has not been conducted.
  3. How accurate are the heights or depths?
    For push core samples, the vertical accuracy was determined with ROV Jason’s altimeter, which is accurate to less than 1 m. For gravity core samples, the vertical accuracy was determined with the R/V Thomas G. Thompson’s multibeam bathymetry system. No formal positional accuracy tests were conducted.
  4. Where are the gaps in the data? What is missing?
    Dataset 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?
    No formal logical accuracy tests were conducted.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints No access constraints
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 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
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    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 contained in a single file.
  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?
    These data can be viewed with Microsoft Excel or any text reader.

Who wrote the metadata?

Dates:
Last modified: 17-Mar-2025
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P13B46QX/TN403_SedimentGeochemistry_Metadata.faq.html>
Generated by mp version 2.9.51 on Tue Apr 1 10:12:10 2025