Major, minor, and trace element data for rock samples from the Escanaba Trough (Gorda Ridge)

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What does this data set describe?

Title:
Major, minor, and trace element data for rock samples from the Escanaba Trough (Gorda Ridge)
Abstract:
This data release contains geochemical data of rock samples collected from the Escanaba Trough hydrothermal vent field, Gorda Ridge, in the northeast Pacific Ocean. These data were collected in 2022 on expedition TN403 (USGS Field Activity 2022-621-FA). Samples were taken to the USGS Pacific Coastal Marine Science Center for subsampling and geochemical analyses. 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?
    Shapiro, Isabelle M., Favela, Jaycee, Adamczyk, Katlin Bowman, and Gartman, Amy, 20260403, Major, minor, and trace element data for rock samples from the Escanaba Trough (Gorda Ridge): data release DOI: 10.5066/P1DJPX9G, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Shapiro, Isabelle M., Favela, Jaycee, Adamczyk, Katlin Bowman, and Gartman, Amy, 2026, Geochemistry and x-ray diffraction data of rock samples from the Escanaba Trough (Gorda Ridge): data release DOI: 10.5066/P1DJPX9G, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    Other_Citation_Details:
    Suggested Citation: Shapiro, I. M., Favela, J., Adamczyk, K.B., and Gartman, A., 2026, Geochemistry and x-ray diffraction data of rock samples from the Escanaba Trough (Gorda Ridge): U.S. Geological Survey data release, https://doi.org/10.5066/P1DJPX9G.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -127.5477
    East_Bounding_Coordinate: -127.4463
    North_Bounding_Coordinate: 41.0822
    South_Bounding_Coordinate: 40.6957
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 12-Jul-2022
    Ending_Date: 11-Aug-2025
    Currentness_Reference:
    Date that the last process step was completed
  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 (59)
    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 1/298.257223563.
  7. How does the data set describe geographic features?
    TN403_Bulk_Geochem_data.csv
    Comma-delimited file containing results from geochemical analyses of rock 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, the value of -7777 indicates that the measurement for an analyte was above the detection limit, and the value -9999 indicates that no analysis was performed. (Source: Producer defined)
    Cruise_ID
    The alphanumeric cruise identified 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 are formatted as Dive#-Rock#-bulk (for example, J2-1424-R07-bulk is ROV Jason dive number J2-1424, rock number 7, bulk composition). Deviations from this naming convention include J2-1417-B01 rock-bulk (rock collected with a scoop sample of a bacterial mat), GC02-bulk (rock collected in a 20cm-long section of gravity core), GC05-z-rock_63-69_bulk (rock extracted from gravity core GC05 section z between 63 and 69 cm core depth).
    Sample_Type
    The type of rock each sample (Source: Producer defined)
    ValueDefinition
    bulk mudstonethis sample is bulk mudstone
    bulk hydrothermal precipitatethis sample is bulk hydrothermal precipitate
    Latitude
    Latitude at which sample was collected (Source: producer defined)
    Range of values
    Minimum:40.6957
    Maximum:41.0822
    Units:decimal degrees
    Resolution:0.0001
    Longitude
    Longitude at which sample was collected (Source: producer defined)
    Range of values
    Minimum:-127.5477
    Maximum:-127.4463
    Units:decimal degrees
    Resolution:0.0001
    Water_Depth
    Water depth in meters at which the sample was collected (Source: producer defined)
    Range of values
    Minimum:3192
    Maximum:3319
    Units:meters
    Resolution:1
    Fe
    Iron concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:18500
    Maximum:561000
    Units:parts per million
    Resolution:100
    Mn
    Manganese concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:7
    Maximum:6070
    Units:parts per million
    Resolution:1
    Si
    Silicon 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:315000
    Units:parts per million
    Resolution:100
    Al
    Aluminum 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:91200
    Units:parts per million
    Resolution:100
    Mg
    Magnesium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:200
    Maximum:142000
    Units:parts per million
    Resolution:100
    Ca
    Calcium 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:200
    Maximum:10200
    Units:parts per million
    Resolution:100
    Na
    Sodium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:800
    Maximum:47900
    Units:parts per million
    Resolution:100
    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:1000
    Maximum:18000
    Units:parts per million
    Resolution:1000
    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:4900
    Units:parts per million
    Resolution:100
    S
    Sulfur concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:900
    Maximum:488000
    Units:parts per million
    Resolution:100
    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:12
    Maximum:652
    Units:parts per million
    Resolution:1
    As
    Arsenic concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:7
    Maximum:16800
    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:290
    Units:parts per million
    Resolution:10
    Ba
    Barium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:55
    Maximum:53300
    Units:parts per million
    Resolution:1
    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:319
    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:3
    Maximum:839
    Units:parts per million
    Resolution:1
    Cl
    Chlorine concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1100
    Maximum:28900
    Units:parts per million
    Resolution:100
    Co
    Cobalt concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.6
    Maximum:2010.0
    Units:parts per million
    Resolution:0.1
    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:9
    Maximum:132
    Units:parts per million
    Resolution:1
    Cu
    Copper concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:22
    Maximum:141000
    Units:parts per million
    Resolution:1
    Ga
    Gallium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1
    Maximum:204
    Units:parts per million
    Resolution:0.1
    Ge
    Germanium 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:0.8
    Maximum:166.0
    Units:parts per million
    Resolution:0.1
    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:4
    Units:parts per million
    Resolution:1
    Hg
    Mercury 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:0.018
    Maximum:93.200
    Units:parts per million
    Resolution:0.001
    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:0.2
    Maximum:81.2
    Units:parts per million
    Resolution:0.1
    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:23
    Maximum:50
    Units:parts per million
    Resolution:1
    Mo
    Molybdenum 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:3
    Maximum:124
    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:2.5
    Maximum:24.4
    Units:parts per million
    Resolution:0.1
    Ni
    Nickel 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:5930
    Units:parts per million
    Resolution:10
    Pb
    Lead concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:9.9
    Maximum:57700.0
    Units:parts per million
    Resolution:0.1
    Rb
    Rubidium 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:0.4
    Maximum:72.7
    Units:parts per million
    Resolution:0.1
    Sb
    Antimony 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:1710
    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:0.1
    Maximum:16.3
    Units:parts per million
    Resolution:0.1
    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:1690
    Units:parts per million
    Resolution:1
    Sn
    Tin concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:1.0
    Maximum:1380.0
    Units:parts per million
    Resolution:0.1
    Sr
    Strontium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:18
    Maximum:7750
    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:0.2
    Maximum:4.0
    Units:parts per million
    Resolution:0.1
    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:6
    Maximum:33
    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:0.1
    Maximum:11.2
    Units:parts per million
    Resolution:0.1
    Tl
    Thallium 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:0.1
    Maximum:328.0
    Units:parts per million
    Resolution:0.1
    U
    Uranium concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.1
    Maximum:15.4
    Units:parts per million
    Resolution:0.1
    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:6
    Maximum:319
    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:0.7
    Maximum:80.8
    Units:parts per million
    Resolution:0.1
    Zn
    Zinc concentration in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:50
    Maximum:196000
    Units:parts per million
    Resolution:10
    Zr
    Zirconium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate no analysis was performed. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2
    Maximum:165
    Units:parts per million
    Resolution:1
    La
    Lanthanum 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:0.4
    Maximum:44.1
    Units:parts per million
    Resolution:0.1
    Ce
    Cerium 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:1.0
    Maximum:74.6
    Units:parts per million
    Resolution:0.1
    Pr
    Praseodymium 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:0.1
    Maximum:8.6
    Units:parts per million
    Resolution:0.1
    Nd
    Neodyium 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:0.4
    Maximum:34.8
    Units:parts per million
    Resolution:0.1
    Sm
    Samarium 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:0.1
    Maximum:7.4
    Units:parts per million
    Resolution:0.1
    Eu
    Europium 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:0.1
    Maximum:110.0
    Units:parts per million
    Resolution:0.1
    Gd
    Gadolinium 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:0.1
    Maximum:7.8
    Units:parts per million
    Resolution:0.1
    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:0.2
    Maximum:0.9
    Units:parts per million
    Resolution:0.1
    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:0.3
    Maximum:4.7
    Units:parts per million
    Resolution:0.1
    Y
    Yttrium content 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:0.1
    Maximum:27.0
    Units:parts per million
    Resolution:0.1
    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:0.2
    Maximum:1.0
    Units:parts per million
    Resolution:0.1
    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:0.1
    Maximum:2.9
    Units:parts per million
    Resolution:0.1
    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:0.2
    Maximum:0.5
    Units:parts per million
    Resolution:0.1
    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:0.1
    Maximum:2.4
    Units:parts per million
    Resolution:0.1
    SUM_REY
    Summation of the concentration of rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Y in each sample (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.0
    Maximum:209.8
    Units:parts per million
    Resolution:0.1
    Percent_HREY
    Percentage of the heavy rare earth elements calculated by taking the sum of heavy rare earth elements (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and Y and dividing by the total_REY for each sample. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0
    Maximum:100
    Units:percent
    Resolution:1
    Au
    Gold concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -7777 indicate that the measurements was above the detection limit. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.010
    Maximum:7.710
    Units:parts per million
    Resolution:0.001
    Ir
    Iridium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.005
    Maximum:0.024
    Units:parts per million
    Resolution:0.001
    Os
    Osmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.009
    Maximum:0.009
    Units:parts per million
    Resolution:0.001
    Pd
    Palladium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.005
    Maximum:0.059
    Units:parts per million
    Resolution:0.001
    Pt
    Platinum concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.005
    Maximum:0.093
    Units:parts per million
    Resolution:0.001
    Rh
    Rhodium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.005
    Maximum:0.013
    Units:parts per million
    Resolution:0.001
    Ru
    Ruthenium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:0.006
    Maximum:0.048
    Units:parts per million
    Resolution:0.001
    TOC
    Total organic carbon concentration in each sample. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:211
    Maximum:138128
    Units:parts per million
    Resolution:1
    TIC
    Total inorganic carbon concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. Values of -9999 indicate that no analysis was done. (Source: standard reporting value in geochemistry)
    Range of values
    Minimum:2
    Maximum:375
    Units:parts per million
    Resolution:1
    Fe_Detection
    The detection limit for iron concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Mn_Detection
    The detection limit for manganese concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    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 aresenic 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
    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
    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
    Cl_Detection
    The detection limit for chlorine 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
    Cu_Detection
    The detection limit for copper concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    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 (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
    Au_Detection
    The detection limit for gold concentration based on the measurement method and instrumentation (Source: Producer defined)
    Range of values
    Minimum:0.002
    Maximum:0.005
    Units:parts per million
    Resolution:100
    Ir_Detection
    The detection limit for iridium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Os_Detection
    The detection limit for osmium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Pd_Detection
    The detection limit for palladium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Pt_Detection
    The detection limit for platinum concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Rh_Detection
    The detection limit for rhodium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    Ru_Detection
    The detection limit for ruthenium concentration based on the measurement method and instrumentation (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    TOC_Detection
    The detection limit total organic carbon concentration based on the measurement method and instrumentation. Values of -9999 indicate that the detection limit was not available. (Source: Producer defined) Numerical value provided by the analyzer in parts per million
    TIC_Detection
    The detection limit total inorganic carbon concentration based on the measurement method and instrumentation. Values of -9999 indicate that the detection limit was not available. (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_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    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 by ActsLabs
    Si_method
    An alphanumeric code that denotes the method and instrumentation used to measure silicon concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Al_method
    An alphanumeric code that denotes the method and instrumentation used to measure aluminum concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Mg_method
    An alphanumeric code that denotes the method and instrumentation used to measure magnesium concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Ca_method
    An alphanumeric code that denotes the method and instrumentation used to measure calcium concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Na_method
    An alphanumeric code that denotes the method and instrumentation used to measure sodium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    K_method
    An alphanumeric code that denotes the method and instrumentation used to measure potassium concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Ti_method
    An alphanumeric code that denotes the method and instrumentation used to measure titanium concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    S_method
    An alphanumeric code that denotes the method and instrumentation used to measure sulfur concentration (Source: Producer defined)
    ValueDefinition
    ICP_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Ag_method
    An alphanumeric code that denotes the method and instrumentation used to measure silver concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    As_method
    An alphanumeric code that denotes the method and instrumentation used to measure aresenic concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion by ActsLabs
    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 by ActsLabs
    Ba_method
    An alphanumeric code that denotes the method and instrumentation used to measure barium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    Cl_method
    An alphanumeric code that denotes the method and instrumentation used to measure chlorine concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    Co_method
    An alphanumeric code that denotes the method and instrumentation used to measure cobalt concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion by ActsLabs
    Cr_method
    An alphanumeric code that denotes the method and instrumentation used to measure choromium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    Hf_method
    An alphanumeric code that denotes the method and instrumentation used to measure hafnium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    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 by ActLabs
    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 by ActsLabs
    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_OES_Na2O2Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion by ActLabs
    Mo_method
    An alphanumeric code that denotes the method and instrumentation used to measure molybdenum concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabss
    Sb_method
    An alphanumeric code that denotes the method and instrumentation used to measure antimony concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_Na2O2Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion by ActsLabs
    Sc_method
    An alphanumeric code that denotes the method and instrumentation used to measure scandium concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    Sm_method
    TAn 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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    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 by ActsLabs
    Au_method
    An alphanumeric code that denotes the method and instrumentation used to measure gold concentration (Source: Producer defined)
    ValueDefinition
    INAAInstrumental Neutron Activation Analysis by ActLabs
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Ir_method
    An alphanumeric code that denotes the method and instrumentation used to measure iridium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Os_method
    An alphanumeric code that denotes the method and instrumentation used to measure osmium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Pd_method
    An alphanumeric code that denotes the method and instrumentation used to measure palladium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Pt_method
    An alphanumeric code that denotes the method and instrumentation used to measure platinum concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Rh_method
    An alphanumeric code that denotes the method and instrumentation used to measure rhodium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    Ru_method
    An alphanumeric code that denotes the method and instrumentation used to measure ruthenium concentration (Source: Producer defined)
    ValueDefinition
    ICP_MS_NiS_FAInductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay by Intertek
    TOC_method
    An alphanumeric code that denotes the method and instrumentation used to measure total organic carbon concentration (Source: Producer defined)
    ValueDefinition
    Wt_differenceSample weight difference
    TIC_method
    An alphanumeric code that denotes the method and instrumentation used to measure total inorganic carbon concentration (Source: Producer defined)
    ValueDefinition
    UICUIC CM5230 acid digester attached to a CM5017 coulometer
    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)
    • Isabelle M. Shapiro
    • Jaycee Favela
    • Katlin Bowman Adamczyk
    • Amy Gartman
  2. Who also contributed to the data set?
  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?

These data serve to expand the knowledge and statistics for deep ocean marine mineral occurrences and composition within the global ocean.

How was the data set created?

  1. From what previous works were the data drawn?
    geochemistry (source 1 of 2)
    Activation Laboratories Ltd. (Actlabs), Ancaster, Ontario, Canada, 2023, Geochemical Element Analysis.

    Online Links:

    Type_of_Source_Media: geochemical analyses
    Source_Contribution:
    Geochemical analysis of rock powders. Fe, Si, Al, Ca, Mg, K, Ti, and Li were determined by Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion (ICP_OES_Na2O2); Mn, As, B, Ba, Bi, Cd, Co, Cu, Ga, Ge, In, Nb, Ni, Rb, Pb, Sb, Sn, Sr, Se, Ta, Te, Th, Tl, U, V, W, Zn, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Y, Ho, Er, Tm, and Yb were determined by Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion (ICP_MS_Na2O2); Na, Ag, Cl, Cr, Hf, Mo, and Sc were determined by Instrumental Neutron Activation Analysis (INAA); Ir, Os, Pd, Pt, Rh, and Ru were determined by Inductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay (ICP_MS_NiS_FA); Zr was determined by Inductively Coupled Plasma Mass Spectrometry, Lithium Borate Fusion (ICP_MS_FUS), and Hg was determined by Cold Vapor Atomic Absorption Spectroscopy (CVAAS). Au was determined by Instrumental Neutron Activation Analysis (INAA) for most of the samples and by Inductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay (ICP_MS_NiS_FA) for the remaining.
    PGE data (source 2 of 2)
    Intertek, Maddington, Western Australia, 2024, Platinum Group Element Analysis.

    Online Links:

    Type_of_Source_Media: geochemical analyses
    Source_Contribution:
    Geochemical analysis of rock powders. Platinum group element concentrations (PGE; Au, Ir, Os, Pd, Pt, Rh, Ru), as well as Au concentrations for several samples, were determined by Inductively Coupled Plasma Mass Spectrometry, nickel sulfide fire assay (ICP_MS_NiS_FA).
  2. How were the data generated, processed, and modified?
    Date: 13-Jun-2022 (process 1 of 4)
    Rock 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. Rocks were collected from the seafloor using the ROV Jason's manipulator arm at water depths between 3192 and 3319 meters. Rock samples were frozen immediately upon recovery from the ROV, stored frozen, and shipped on ice to the USGS Pacific Coastal and Marine Science Center in Santa Cruz, CA.
    Date: 24-Aug-2023 (process 2 of 4)
    In the USGS Pacific Coastal and Marine Science Center Global Seabed Mineral Resources Lab, bulk rock samples were freeze dried, then ground to a powder (approximately 75 micrometers) using a shatterbox and ceramic-lined bowls and ceramic pucks. Ceramic-lined bowls and pucks were cleaned thoroughly with quartz powder and detergents between samples to avoid cross-contamination. Bulk rock samples are representative of the whole sample and may include different mineralogical layers and rings (outer layers of weathered or depositional minerals). Powdered samples (10-50 grams) were then mailed to commercial analytical labs, Actlabs and Intertek, in individual plastic screw-top containers for geochemical analyses. See Source Citations for information on geochemical techniques. Data sources used in this process:
    • geochemistry
    • PGE data
    Date: 01-Nov-2023 (process 3 of 4)
    Total rare earth elements plus yttrium (Total_REY) were calculated by summing the concentration of rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Y in each sample. Percentage of the heavy rare earth elements was calculated by taking the sum of heavy rare earth elements (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and Y and dividing the sum by the Total_REY value for each sample. Data sources used in this process:
    • geochemistry
    Date: 11-Aug-2025 (process 4 of 4)
    Results from the lab analyses, detection limits, analytical method information, location data, and sample information were combined into a comma-delimited text values document (TN403_Bulk_Geochem_data.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:
    • geochemistry
    • PGE data
  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?
    All geochemistry data were calibrated against certified reference materials. The average relative percent different (RPD) between measured and certified concentrations was 10-20 percent for Au, W, V, Th, Tb, Bi, Y, Sb, Sn, In, Ga, Er, Dy, Eu, and Rb. Higher RPDs (>20 percent) were observed for Cr, Sm, and Yb. Average RPDs were <10 percent for Ir, Pd, Pt, Rh, Ru, Al, As, Ba, Ca, Cd, Ce, Cl, Co, Fe, Gd, Hf, Hg, Ho, K, La, Li, Mg, Mn, Mo, Nb, Nd, Ni, Pb, Pr, S, Si, Sr, Ti, Tl, U, Zn, Zr. There were no CRMs for Ru, Ag, B, Ge, Na, Sc, Se, Ta, Te, and Tm. Duplicate measurements were made for all elements except Os, Ag, Au, Be, Cl, Hf, Ir, Li, Ti, Na, Sc, Tm, Ta, and Lu. The average RPD between duplicate measurements was 10-20 percent for Y, Er, Pr, Eu, K, W, Tb, Tl, Rb, and In. Higher RPDs (>20 percent) were observed for Au, Ir, Pd, Pt, Rh, Ru, Gd, Dy, Te, Ca, Cs, Ni, Yb, Sm, Nd, and Nb. Average RPDs were <10 percent for Fe, S, Si, Th, V, Mn, Cu, Hg, Cd, Pb, Sb, Al, Zn, Co, As, Sr, B, Bi, U, Mg, Sn, Ce, Zr, Ba, Cr, Mo, La, Ho, Ga, Ge, and Se. The instruments and techniques used to generate the geochemical data are included in the data table and also summarized below in the Source Citations since data were generated by commercial laboratories. 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. Values of -9999 indicate that no analysis was performed.
  2. How accurate are the geographic locations?
    The location of rock samples were determined using ROV Jason's ultra-short baseline (USBL) navigation. Accuracy for this depth is approximately 6-26 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?
    Vertical accuracy was determined with ROV Jason's altimeter, which is accurate to less than 1 m. 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. Many samples do not have chemistry data because analyses were performed on representative samples only. 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. These data are marked with a Creative Common CC0 1.0 Universal License. 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?
    • Availability in digital form:
      Data format: File contains table in .csv format in format comma-delimited text (version Microsoft Excel 16.16.17 for Mac) Size: 0.088
      Network links: https://doi.org/10.5066/P1DJPX9G
    • Cost to order the data: None.

  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: 03-Apr-2026
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_P1DJPX9G/Escanaba_Bulk_Metadata.faq.html>
Generated by mp version 2.9.51 on Fri Apr 10 16:37:32 2026