Katlin Bowman Adamczyk Amy Gartman Jaycee Favela Jacob Tidwell 20250317 comma-delimited text data release DOI:10.5066/P13B46QX Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P13B46QX https://www.sciencebase.gov/catalog/item/670957a2d34e969edc5a2a9b Katlin Bowman Adamczyk Amy Gartman Jaycee Favela Jacob Tidwell 2025 data release DOI:10.5066/P13B46QX Pacific Coastal and Marine Science Center, Santa Cruz, CA U.S. Geological Survey 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. https://doi.org/10.5066/P13B46QX https://www.sciencebase.gov/catalog/item/67004442d34e80be174aea95 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. Data were obtained to characterize downcore geochemical properties of sediments. These data are intended for science researchers, students, policy makers, and the general public. 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. 20220712 20231129 Time data were compiled to completion of the last process step Complete None planned -127.5357 -127.4076 41.1632 40.6957 ISO 19115 Topic Category oceans geoscientificInformation Data Categories for Marine Planning Nonliving Resources Material Resources Mineral Resources Physical/Chemical Features USGS Thesaurus push coring gravity coring chemical analysis mass spectroscopy geochemistry metallic mineral resources earth sciences marine geology Marine Realms Information Bank (MRIB) keywords sediment geochemistry mineral resources chemical analysis None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC Global Ocean Mineral Resources USGS Metadata Identifier USGS:670957a2d34e969edc5a2a9b Geographic Names Information System (GNIS) Pacific Ocean NGA GEOnet Names Server (GNS) Escanaba Trough Gorda Ridge No access 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. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov https://www.sciencebase.gov/catalog/file/get/670957a2d34e969edc5a2a9b?name=geochemistry.jpg&allowOpen=true Push core sediment collection with a remotely operated vehicle. JPEG 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. Windows 11 Enterprise, Microsoft Excel 365 for enterprise 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. No formal logical accuracy tests were conducted. 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. 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. 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. Adamczyk, Katlin Gartman, Amy Favela, Jaycee Tidwell, Jacob 2025 comma-delimited text online U.S. Geological Survey https://www.sciencebase.gov/catalog/item/679282a3d34e88f5864c49e9 U.S. Geological Survey data release 20220524 20220613 ground condition at time samples were collected TN403_CoreLocations Latitude, longitude, and water depth information for gravity cores and push cores from this same data release Actlabs, Ancaster, Ontario, Canada 2022 https://actlabs.com/geochemistry/ geochemical analyses 20220712 Date that official lab reports were released by Actlabs geochemistry 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. 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. 20220613 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. 20220620 Approximately 10 grams of each sample was mailed to ACTLabs in individual plastic screw-top containers. All geochemical analyses were performed by ActLabs. 20220625 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). TN403_CoreLocations geochemistry 20231129 Katlin Adamczyk USGS Physical Scientist mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-460-7420 kadamczyk@usgs.gov Point Point 78 0.0001 0.0001 Decimal degrees D_WGS_1984 WGS_1984 6378137.0 298.257222101 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. Producer defined Cruise_ID The alphanumeric cruise identifier for the expedition during which the sample was collected producer defined TN403 Cruise identifier for the Escanaba Trough expedition onboard the R/V Thomas G. Thompson in 2022 producer defined Sample_ID The sample ID for each sample 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 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 TN403_CoreLocations 40.6957 41.1632 decimal degrees .0001 Longitude Longitude at which sample was collected TN403_CoreLocations -127.5357 -127.4076 decimal degrees .0001 Water_Depth Water depth in meters at which the sample was collected TN403_CoreLocations 3201 3304 meters 1 Fe Iron concentration in each sample. standard reporting value in geochemistry 34300 562000 parts per million 1 Mn Manganese concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. standard reporting value in geochemistry 29 34200 parts per million 1 Si Silicon concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. standard reporting value in geochemistry 1700 305000 parts per million 1 Al Aluminum concentration in each sample. standard reporting value in geochemistry 500 87900 parts per million 1 Mg Magnesium concentration in each sample. standard reporting value in geochemistry 700 84800 parts per million 1 Ca Calcium concentration in each sample. standard reporting value in geochemistry 300 24400 parts per million 1 Na Sodium concentration in each sample. standard reporting value in geochemistry 3600 38300 parts per million 1 K Potassium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 3000 25000 parts per million 1 Ti Titanium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 100 4800 parts per million 1 S Sulfur concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. standard reporting value in geochemistry 1100 364000 parts per million 1 Ag Silver concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry. 16 35 parts per million 1 As Arsenic concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 2.0 5750.0 parts per million .1 B Boron concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 10 300 parts per million 1 Ba Barium concentration in each sample. standard reporting value in geochemistry 500 64800 parts per million 1 Be Beryllium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. 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. standard reporting value in geochemistry 2 314 parts per million 1 Br Bromine concentration in each sample. standard reporting value in geochemistry 24.5 242.0 parts per million .1 Cd Cadmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 2 32 parts per million 1 Co Cobalt concentration in each sample. standard reporting value in geochemistry 5 981 parts per million 1 Cr Chromium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 15 209 parts per million 1 Cs Caesium concentration in each sample. standard reporting value in geochemistry .1 10.2 parts per million .1 Cu Copper concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. standard reporting value in geochemistry 23 18400 parts per million 1 Ga Gallium concentration in each sample. standard reporting value in geochemistry 3.3 38.9 parts per million .1 Ge Germanium concentration in each sample. standard reporting value in geochemistry .8 43.0 parts per million .1 Hf Hafnium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 1 6 parts per million 1 Hg Mercury concentration in each sample. standard reporting value in geochemistry .026 18.000 parts per million .001 In Indium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .2 15.3 parts per million .1 Li Lithium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 16 78 parts per million 1 Mo Molybdenum concentration in each sample. standard reporting value in geochemistry 3 152 parts per million 1 Nb Niobium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 2.4 16.4 parts per million .1 Ni Nickel concentration in each sample. standard reporting value in geochemistry 40 340 parts per million 1 Pb Lead concentration in each sample. standard reporting value in geochemistry 9.9 3660.0 parts per million .1 Rb Rubidium concentration in each sample. standard reporting value in geochemistry 1.1 121.0 parts per million .1 Sb Antimony concentration in each sample. standard reporting value in geochemistry .5 206.0 parts per million .1 Sc Scandium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .6 19.9 parts per million .1 Se Selenium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 8 370 parts per million 1 Sn Tin concentration in each sample. standard reporting value in geochemistry 1.7 291.0 parts per million .1 Sr Strontium concentration in each sample. standard reporting value in geochemistry 95 1750 parts per million 1 Ta Tantalum concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .2 2.4 parts per million .1 Te Tellurium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 7 17 parts per million 1 Th Thorium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .2 11.1 parts per million .1 Tl Thallium concentration in each sample. standard reporting value in geochemistry .1 14.7 parts per million .1 U Uranium concentration in each sample. standard reporting value in geochemistry .9 47.2 parts per million .1 V Vanadium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 24 277 parts per million 1 W Tungsten concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .8 6.7 parts per million .1 Zn Zinc concentration in each sample. Values of -7777 indicate that the measurement was above the detection limit. standard reporting value in geochemistry 40 10000 parts per million 1 Zr Zirconium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry 2 181 parts per million 1 La Lanthanum concentration in each sample. standard reporting value in geochemistry 3.6 34.1 parts per million .1 Ce Cerium concentration in each sample. standard reporting value in geochemistry 4.9 69.7 parts per million .1 Pr Praseodymium concentration in each sample. standard reporting value in geochemistry .4 8.0 parts per million .1 Nd Neodymium concentration in each sample. standard reporting value in geochemistry 1.7 31.6 parts per million .1 Sm Samarium concentration in each sample. standard reporting value in geochemistry .4 5.8 parts per million .1 Eu Europium concentration in each sample. standard reporting value in geochemistry .5 17.0 parts per million .1 Gd Gadolinium concentration in each sample. standard reporting value in geochemistry .3 6.2 parts per million .1 Tb Terbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .1 .8 parts per million .1 Dy Dysprosium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .4 4.8 parts per million .1 Y Yttrium content in each sample. standard reporting value in geochemistry .3 25.0 parts per million .1 Ho Holmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .2 1.0 parts per million .1 Er Erbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .1 3.0 parts per million .1 Tm Thulium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .1 .4 parts per million .1 Yb Ytterbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .1 3.0 parts per million .1 Lu Lutetium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .05 .41 parts per million .01 Au Gold concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. standard reporting value in geochemistry .006 3.060 parts per million .001 Ir Iridium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. 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 Producer defined 100 500 parts per million 100 Mn_Detection The detection limit for manganese concentration based on the measurement method and instrumentation Producer defined 3 100 parts per million 1 Si_Detection The detection limit for silicon concentration based on the measurement method and instrumentation 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 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 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 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 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 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 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. 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 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 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 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 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 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 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 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 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 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 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 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 Producer defined 2 50 parts per million 1 Ga_Detection The detection limit for gallium concentration based on the measurement method and instrumentation. 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. 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. 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. 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 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 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 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 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 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 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 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 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 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. 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 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 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. 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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. 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. 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 Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined INAA Instrumental Neutron Activation Analysis producer defined Mn_method An alphanumeric code that denotes the method and instrumentation used to measure manganese concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined ICP_OES_Na2O2 Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion producer defined Si_method An alphanumeric code that denotes the method and instrumentation used to measure silicon concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Al_method An alphanumeric code that denotes the method and instrumentation used to measure aluminum concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Mg_method An alphanumeric code that denotes the method and instrumentation used to measure magnesium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ca_method An alphanumeric code that denotes the method and instrumentation used to measure calcium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Na_method An alphanumeric code that denotes the method and instrumentation used to measure sodium concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined K_method An alphanumeric code that denotes the method and instrumentation used to measure potassium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ti_method An alphanumeric code that denotes the method and instrumentation used to measure titanium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined S_method An alphanumeric code that denotes the method and instrumentation used to measure sulfur concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ag_method An alphanumeric code that denotes the method and instrumentation used to measure silver concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined As_method An alphanumeric code that denotes the method and instrumentation used to measure arsenic concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined B_method An alphanumeric code that denotes the method and instrumentation used to measure boron concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ba_method An alphanumeric code that denotes the method and instrumentation used to measure barium concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Be_method An alphanumeric code that denotes the method and instrumentation used to measure beryllium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Bi_method An alphanumeric code that denotes the method and instrumentation used to measure bismuth concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Br_method An alphanumeric code that denotes the method and instrumentation used to measure bromine concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Cd_method An alphanumeric code that denotes the method and instrumentation used to measure cadmium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Co_method An alphanumeric code that denotes the method and instrumentation used to measure cobalt concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Cr_method An alphanumeric code that denotes the method and instrumentation used to measure chromium concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Cs_method An alphanumeric code that denotes the method and instrumentation used to measure caesium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Cu_method An alphanumeric code that denotes the method and instrumentation used to measure copper concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined ICP_OES_Na2O2 Inductively Coupled Plasma Optical Emission Spectroscopy sodium peroxide fusion producer defined Ga_method An alphanumeric code that denotes the method and instrumentation used to measure gallium concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ge_method An alphanumeric code that denotes the method and instrumentation used to measure germanium concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Hf_method An alphanumeric code that denotes the method and instrumentation used to measure hafnium concentration. Producer defined INAA Instrumental Neutron Activation Analysis producer defined Hg_method An alphanumeric code that denotes the method and instrumentation used to measure mercury concentration. Producer defined CVAAS Cold Vapor Atomic Absorption Spectroscopy producer defined In_method An alphanumeric code that denotes the method and instrumentation used to measure indium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Li_method An alphanumeric code that denotes the method and instrumentation used to measure lithium concentration based on the measurement method and instrumentation Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Mo_method An alphanumeric code that denotes the method and instrumentation used to measure molybdenum concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Nb_method An alphanumeric code that denotes the method and instrumentation used to measure niobium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ni_method An alphanumeric code that denotes the method and instrumentation used to measure nickel concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Pb_method An alphanumeric code that denotes the method and instrumentation used to measure lead concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Rb_method An alphanumeric code that denotes the method and instrumentation used to measure rubidium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Sb_method An alphanumeric code that denotes the method and instrumentation used to measure antimony concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Sc_method An alphanumeric code that denotes the method and instrumentation used to measure scandium concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Se_method An alphanumeric code that denotes the method and instrumentation used to measure selenium concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Sn_method An alphanumeric code that denotes the method and instrumentation used to measure tin concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Sr_method An alphanumeric code that denotes the method and instrumentation used to measure strontium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ta_method An alphanumeric code that denotes the method and instrumentation used to measure tantalum concentration. Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Te_method An alphanumeric code that denotes the method and instrumentation used to measure tellurium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Th_method An alphanumeric code that denotes the method and instrumentation used to measure thorium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Tl_method An alphanumeric code that denotes the method and instrumentation used to measure thallium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined U_method An alphanumeric code that denotes the method and instrumentation used to measure uranium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined V_method An alphanumeric code that denotes the method and instrumentation used to measure vanadium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined W_method An alphanumeric code that denotes the method and instrumentation used to measure tungsten concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Zn_method An alphanumeric code that denotes the method and instrumentation used to measure zinc concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Zr_method An alphanumeric code that denotes the method and instrumentation used to measure zirconium concentration Producer defined ICP_MS_FUS Inductively Coupled Plasma Mass Spectrometry, Lithium Borate Fusion producer defined La_method An alphanumeric code that denotes the method and instrumentation used to measure lanthanum concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ce_method An alphanumeric code that denotes the method and instrumentation used to measure cerium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Pr_method An alphanumeric code that denotes the method and instrumentation used to measure praseodymium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Nd_method An alphanumeric code that denotes the method and instrumentation used to measure neodymium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Sm_method An alphanumeric code that denotes the method and instrumentation used to measure samarium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Eu_method An alphanumeric code that denotes the method and instrumentation used to measure europium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Gd_method An alphanumeric code that denotes the method and instrumentation used to measure gadolinium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Tb_method An alphanumeric code that denotes the method and instrumentation used to measure terbium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Dy_method An alphanumeric code that denotes the method and instrumentation used to measure dysprosium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Y_method An alphanumeric code that denotes the method and instrumentation used to measure yttrium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Ho_method An alphanumeric code that denotes the method and instrumentation used to measure holmium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Er_method An alphanumeric code that denotes the method and instrumentation used to measure erbium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Tm_method An alphanumeric code that denotes the method and instrumentation used to measure thulium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Yb_method An alphanumeric code that denotes the method and instrumentation used to measure ytterbium concentration Producer defined ICP_MS_Na2O2 Inductively Coupled Plasma Mass Spectrometry sodium peroxide fusion producer defined Lu_method An alphanumeric code that denotes the method and instrumentation used to measure lutetium concentration Producer defined INAA Instrumental Neutron Activation Analysis producer defined Au_method An alphanumeric code that denotes the method and instrumentation used to measure gold concentration. Producer defined INAA Instrumental Neutron Activation Analysis producer defined Ir_method An alphanumeric code that denotes the method and instrumentation used to measure iridium concentration. Producer defined INAA Instrumental Neutron Activation Analysis producer defined The first line of the csv file is a header line. U.S. Geological Survey U.S. Geological Survey - ScienceBase mailing and physical

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Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov These data are available in .csv format contained in a single file. 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. comma-delimited text Microsoft Excel 16.16.17 for Mac File contains table in .csv format No compression applied .099 https://www.sciencebase.gov/catalog/file/get/670957a2d34e969edc5a2a9b https://www.sciencebase.gov/catalog/item/670957a2d34e969edc5a2a9b https://doi.org/10.5066/P13B46QX Data and metadata can be downloaded using the Network_Resource_Name links. The first link is a direct link to download a zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release. None. These data can be viewed with Microsoft Excel or any text reader. 20250317 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998