Wilson, Fredric H. (ORCID: 0000-0003-1761-6437) Karl, Susan M. (ORCID: 0000-0003-1559-7826) Shew, Nora B. (ORCID: 0000-0003-0025-7220) 20210125 tabular digital data Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Suggested Citation: Wilson, F.H., Karl, S.M., Shew, N.B., 2021, Geochemical and 40Ar/39Ar analytical data of rocks from Glacier Bay National Park and Preserve: U.S. Geological Survey data release, https://doi.org/10.5066/P987S177 https://doi.org/10.5066/P987S177 This dataset contains major and trace element geochemical data and 40Ar/39Ar isotopic data and ages for rock samples collected during 2016 fieldwork in Glacier Bay National Park and Preserve. The plutonic rock samples were collected for radiometric age determinations to test for the presence of the Late Jurassic to Early Cretaceous (130-160 Ma) Saint Elias suite. The age analyses indicate that all the dated plutons are too young to be included in the Saint Elias suite. The plutonic rock samples were collected for radiometric age determination to test for the presence of plutons of the Late Jurassic to Early Cretaceous (130-160 Ma) Saint Elias suite. Major and trace element chemical data was determined to help in the categorization of these rocks. 2021 publication date Complete None planned -136.6 -136.2 58.7 58.3 USGS Metadata Identifier USGS:ASC344 ISO 19115 Topic Category GeoScientificInformation NASA GCMD Earth Science Keyword Thesaurus Earth science Igneous rocks USGS Thesaurus Geology Geochronology Geochemistry Isotopic analysis Potassium-argon analysis None Ar/Ar geochronology Pluton USGS Geographic Names Information System (GNIS) Alaska Glacier Bay National Park Glacier Bay National Preserve Geikie Inlet Fingers Bay Dundas Bay No access constraints. No use constraints. These data are marked with a Creative Common CC0 1.0 Universal License and are in the public domain. It is requested that this USGS data release be cited for any subsequent publications that reference or utilize these data. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov The geochemical analyses, run at ALS Global laboratories (Fairbanks, Alaska, and North Vancouver, British Columbia), includes quality control steps through sample preparation and analysis, inter-laboratory test programs, and regular internal audits. Samples were run with standard reference materials and blanks. Quality control data is archived at ALS. For the argon-argon geochronology analyses, mineral samples were irradiated with monitor mineral MMhb-1 with preferred age of 523.5 Ma (Renne et al, 1994). Samples and monitors were step-heated or fused using a 6-watt argon-ion laser. Argon purification was achieved using a liquid nitrogen cold trap and SAES Zr-Al getter at 400 degrees C. The argon isotopes were measured and corrected for system blank and mass discrimination, as well as neutron induced reactions on calcium, potassium and chlorine. Typical full-system 8 min laser blank values (in moles) were generally 2e-16 mol 40Ar, 3e-18 mol 39Ar, 9e-18 mol 38Ar, 2e-18 mol 37Ar, and 2e-18 mol 36Ar, which are 10-50 times smaller than the sample/standard volume fractions. Correction factors for nucleogenic interferences during irradiation were determined from irradiated CaF2 and K2SO4 as follows: (39Ar/37Ar)Ca = 7.06e-4, (36Ar/37Ar)Ca = 2.79e-4, and (40Ar/39Ar)K = 0.0297. Mass discrimination was monitored by analyzing air shots with an assumed 40Ar/36Ar value of 295.5 (Nier, 1950). The mass discrimination during these experiments was 1.3% per mass unit. No significant variation in discrimination over the course of the analyses was measured and so a single value was used in data reduction. Ages with +/- 1 sigma error were calculated using the decay constants of Renne et al, 2010. The integrated age is the age given by the total gas measured and is equivalent to a potassium-argon (K-Ar) age. A plateau age is reported if three or more consecutive gas fractions representing at least 50 percent of the total gas released that are within two standard deviations of each other and with an overall Mean Square Weighted Deviation (MSWD) less than or equal to 2.5. No unexpected values are found in these data. Negative values in some of the geochemistry data columns denote the element was detected but at a level below the limit of reporting (LOR). The LOR is the absolute value of the value listed. Blank cells in the geochrononology tables indicate values were either not provided, not measured, or not calculated. The dataset is complete, no data were omitted. Coordinates determined by handheld GPS with +/- 30 meter accuracy. Mineral separation for 40Ar/39Ar analysis was done at the Geochronology Laboratory at the University of Alaska Fairbanks (UAF). Bulk rock samples were crushed, sieved, washed and hand-picked for pure hornblende and biotite mineral separates. Samples and standards were wrapped in aluminum foil and loaded into aluminum cans of 2.5 cm diameter and 6 cm height. The samples were irradiated in position 5c of the uranium enriched research reactor of McMaster University in Hamilton, Ontario, Canada for 20 megawatt-hours. After irradiation, the samples and standards were returned to UAF and loaded into an ultra-high vacuum extraction line. The standards were fused, and the samples heated, using a 6-watt argon-ion laser. Argon purification was achieved using a liquid nitrogen cold trap and a SAES Zr-Al getter at 400 degrees C. The argon isotopes were analyzed in a VG-3600 mass spectrometer, fitted with a single Daly detector, and operated in peak mode. Unknown Samples were submitted to USGS contact laboratory ALS Minerals for whole rock major oxide and trace element analysis. The samples were processed at the ALS lab in Fairbanks, Alaska, and analyzed for whole rock and trace elements at the ALS lab in North Vancouver, British Columbia. The major oxide analyses were determined by x-ray fluorescence (XRF). Trace elements were analyzed by either lithium borate fusion, followed by acid dissolution (4% HNO3 + 2% HCL3 solution), and inductively coupled plasma mass spectrometry (ICP-MS), or four acid digestion (HN03-HCl4-HF digest, finished with HCl leach) and inductively coupled plasma atomic emission spectroscopy (ICP-AES). ALS Certificate of analysis FA16160446. Unknown LITERATURE CITED: Nier, A.O., 1950. A redetermination of the relative abundances of the isotopes of carbon, nitrogen, oxygen, argon, and potassium. Physical Review 77(6):789. https://doi.org/10.1103/PhysRev.77.789 Renne, P.R., Deino, A.L., Walter, R.C., Turrin, B.D., Swisher, C.C., Becker, T.A., Curtis, G.H., Sharp, W.D., Jaouni, A.-R., 1994. Intercalibration of astronomical and radioisotopic time. Geology 22(9):783–786. https://doi.org/10.1130/0091-7613(1994)022<0783:IOAART>2.3.CO;2 Renne, P.R., Mundil, R., Balco, G., Min, K., Ludwig, K.R., 2010. Joint determination of 40K decay constants and 40Ar*/40K for the Fish Canyon sanidine standard, and improved accuracy for 40Ar/39Ar geochronology. Geochimica et Cosmochimica Acta 74(18):5349-5367. https://doi.org/10.1016/j.gca.2010.06.017 Samson, S.D., Alexander, E.C., 1987. Calibration of the interlaboratory 40Ar/39Ar dating standard, MMhb1. Chemical Geology: Isotope Geoscience section. 66(1-2):27-34. https://doi.org/10.1016/0168-9622(87)90025-X Unknown Point 0.0001 0.0001 Decimal degrees North American Datum of 1983 (NAD83) Geodetic Reference System of 1980 (GRS80) 6378137 298.257222101 geochronology_40Ar39Ar_glacierBay_wilson.csv Table of 40Ar/39Ar isotopic data, including heating power levels, measurements, and calculated age for each heating step. There are 81 records in this table. Presented in a Comma Separated Value (CSV) formatted table. Author defined Sample Sample identifier as collected in the field. Descriptive and locational information about the sample is provide in table "geochronology_40Ar39Ar_summary_glacierBay_wilson.csv" Author defined Unique sample identifier. Labels consist of the last two digits of the year collected, an abbreviation identifying the collector (AWs - F.H. Wilson), and a number. LabID Sample name assigned by the laboratory corresponding to the USGS sample identifier and mineral analyzed. Author defined Alphanumeric code consisting of UAF and a hyphenated number. Lab Laboratory where analysis was conducted Author defined UAF Geochronology Laboratory, University of Alaska Fairbanks Author defined Sample_material Mineral analyzed Author defined The following values are used in this data set: biotite, hornblende. Monitor_mineral Reference mineral used to monitor neutron flux and calculate the irradiation parameter J. Author defined MMhb-1 hornblende standard for 40Ar/39Ar Samson and Alexander 1987, Renne et al. 1994 Monitor_mineral_age Published age of the monitor mineral Author defined The monitor mineral used for all analyses in this data set is MMhb-1 with preferred age of 523.5 Ma. J_value Measure of neutron fluence Author defined 0.005133 0.005133 J_unc Uncertainty (1-sigma) in measure of neutron fluence Author defined 0.00001591 0.00001591 Laser_power_mW Laser power setting, in milliwatt, for each heating step. Blank cells indicate an integrated analysis. Author defined 500 9000 mW (milliwatt) Integrated Integrated analysis indicates that values were calculated by weighting individual heating steps by the fractions of 39Ar released. Author defined N not integrated Author defined Y integrated Author defined 39Ar_cum Cumulative argon isotope 39 released at this step. Blank cells indicate an integrated analysis. Author defined 0.0001 1.0000 percentage in decimal format 40Ar_39Ar_ratio Measured 40Ar/39Ar ratio for each heating step, corrected for blank and 39Ar decay. Author defined 3.88406 1699.15675 40Ar_39Ar_ratio_unc Uncertainty (1-sigma) in 40Ar/39Ar (40Ar_39Ar_ratio) Author defined 0.00997 1537.62175 37Ar_39Ar_ratio Measured 37Ar/39Ar ratio for each heating step, corrected for blank and 37Ar and 39Ar decay. Author defined -4.10232 13.96157 37Ar_39Ar_ratio_unc Uncertainty (1-sigma) in 37Ar/39Ar (37Ar_39Ar_ratio) Author defined 0.00082 5.83017 36Ar_39Ar_ratio Measured 36Ar/39Ar ratio for each heating step, corrected for blank and 39Ar decay. Author defined -0.00930 6.40371 36Ar_39Ar_ratio_unc Uncertainty (1-sigma) in 36Ar/39Ar (36Ar_39Ar_ratio) Author defined 0.00014 5.92191 Perc_atm_40Ar Percent of 40Ar which is atmospheric in the measurement Author defined -40.47811 111.38866 percent Perc_atm_40Ar_unc Uncertainty (1-sigma) in percent atmospheric 40Ar in measurement Author defined 0.31404 33.29497 percent Ca_K_ratio Calcium to potassium ratio as determined from 37 argon derived from calcium and 39 argon derived from potassium; 37Ar(Ca)/39Ar(K). Author defined -7.50545 25.87267 Ca_K_ratio_unc Uncertainty (1-sigma) in calcium to potassium ratio Author defined 0.00150 10.63585 Cl_K_ratio Chlorine to potassium ratio as determined from 38 argon derived from chlorine and 39 argon derived from potassium; 38Ar(Cl)/39Ar(K). Author defined 0.00144 0.77453 Cl_K_ratio_unc Uncertainty (1-sigma) in chlorine to potassium ratio Author defined 0.00006 0.27347 40Ar_39Ar_K Ratio of radiogenic 40Ar to 39Ar derived from potassium Author defined -192.94886 77.49668 40Ar_39Ar_K_unc Uncertainty (1-sigma) in ratio of radiogenic 40Ar to 39Ar from potassium Author defined 0.05128 399.95468 Age_Ma Age calculated for each heating step from ratio of radiogenic 40Ar to 39Ar from potassium, in millions of years. Author defined -4311.60 603.45 millions of years (Ma) Age_Ma_unc Uncertainty (1-sigma) in calculated age, in millions of years Author defined 0.44 381986.79 millions of years (Ma) geochronology_40Ar39Ar_summary_glacierBay_wilson.csv Table with descriptive sample information, including location, rock description, and summary of 40Ar/39Ar geochronology analyses. This table contains 9 records and is presented in comma separated value (CSV) format. Author defined Sample Sample identifier as collected in the field Author defined Unique sample identifier. Labels consist of the last two digits of the year collected, an abbreviation identifying the collector (AWs - F.H. Wilson), and a number. Latitude Latitude in decimal degrees, datum NAD83. Author defined 58.3681 58.6433 Decimal degrees (NAD83) Longitude Longitude in decimal degrees, datum NAD83. Author defined -136.4985 -136.3925 Decimal degrees (NAD83) Rock_Type Sample rock type Author defined A general rock description as identified in the field. Sample_description Text field with brief sample description and location description. Author defined Text field with brief sample description and location description. Analysis_Type Type of geochronologic analysis Author defined 40Ar/39Ar argon-argon radiometric dating Author defined Analysis_Lab Laboratory where analysis was conducted Author defined UAF Geochronology Laboratory, University of Alaska Fairbanks Author defined LabID Sample identifier assigned by the laboratory corresponding to the USGS sample identifier and mineral analyzed. Author defined Alphanumeric code consisting of UAF and a hyphenated number Sample_material Mineral analyzed Author defined The following values are used in this data set: biotite, hornblende. 40Ar_39Ar_ratio_Int Calculated 40Ar/39Ar ratio for the integrated value; corrected for blank and 39Ar decay. Author defined 4.70589 29.75783 36Ar_39Ar_ratio_Int Calculated 36Ar/39Ar ratio for the integrated value; corrected for blank and 37Ar and 39Ar decay. Author defined 0.00218 0.06065 40Ar_rad_pct_Int Percent of 40Ar which is radiogenic in the integrated value Author defined 71.9 90.0 percent Integrated_Age_Ma Integrated 40Ar/39Ar age, in millions of years, calculated from total gas measured Author defined 37.06 116.96 millions of years (Ma) Integrated_Age_Err_Ma Uncertainty (1-sigma) on the integrated 40Ar/39Ar, in millions of years Author defined 0.57 1.0 millions of years (Ma) Plateau_fractions Number of heating steps used in calculation of plateau age out of the number of steps measured. Author defined number of steps used out of number of steps measured 39Ar_released_pct Percent of 39Ar released in the number of heating steps used to calculated the plateau age Author defined 44.7 100.0 percent MSWD Mean square of weighted deviates (MSWD) on calculated plateau age. Author defined 0.02 4.89 Plateau_Age_Ma Plateau 40Ar/39Ar age, in millions of years, calculated from three or more consecutive gas fractions representing more than 50% of the total gas released that are within two standard deviations of each other and with an overall MSWD less than or equal to 2.5. Blank cell indicates data did not meet the criteria necessary to calculate a plateau age. Author defined 37.1 135.2 millions of years (Ma) Plateau_Age_Err_Ma Uncertainty (1-sigma) on the plateau 40Ar/39Ar age, in millions of years. Blank cell indicates data did not meet the criteria necessary to calculate a plateau age. Author defined 0.6 1.0 millions of years (Ma) Weighted_Avg_Age_Ma Calculate age, in millions of years, based on weighted average of incremental heating steps. Author defined 112.7 124.0 millions of years (Ma) Weighted_Avg_Age_Ma Uncertainty (1-sigma) of the weighted average age, in millions of years Author defined 0.6 1.6 millions of years (Ma) Preferred_Age_Ma Preferred 40Ar/39Ar age of the sample material, in millions of years. Author defined 37.1 116.4 millions of years (Ma) Preferred_Age_Err_Ma Uncertainty (1-sigma) of the preferred 40Ar/39Ar age, in millions of years. Author defined 0.57 1.8 millions of years (Ma) Preferred_Age_Type Method used to calculate Preferred_Age_Ma Author defined Values include variations of integrated age, plateau age, and weighted average. geochronology_geochemistry_glacierBay_wilson.csv Table containing whole rock and trace element analyses of thirteen plutonic and metamorphic rock samples collected from the west side of Glacier Bay in Glacier National Park and Preserve. Presented in a Comma Separated Value (CSV) formatted table. Author defined Sample Sample identifier as collected in the field. Author defined Unique sample identifier. Labels consist of the last two digits of the year collected, an abbreviation identifying the collector (AWs - F.H. Wilson; SK - Susan Karl), and a number and possible suffix. Latitude Latitude in decimal degrees, datum NAD83. Author defined 58.3551 58.6803 Decimal degrees (NAD83) Longitude Longitude in decimal degrees, datum NAD83. Author defined -136.5019 -136.2137 Decimal degrees (NAD83) Rock_type Field identification of rock type Author defined Rock names in this table include diorite, granodiorite, metabasite, and quartz diorite. Al2O3_pct Aluminum, as aluminum trioxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 13.71 20.24 weight percent BaO_pct Barium, as barium oxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 0.01 0.09 weight percent CaO_pct Calcium, as calcium oxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 1.60 9.41 weight percent Cr2O3_pct Chromium, as chromium oxide, in weight percent, analyzed by XRF. Value -0.01 indicates a determination less than the lower reporting limit of 0.01. Author defined -0.01 0.03 weight percent Fe2O3_pct Ferric iron, as iron trioxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 6.36 14.30 weight percent K2O_pct Potassium, as potassium oxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 0.17 1.84 weight percent MgO_pct Magnesium, as magnesium oxide, in weight percent, analyzed by XRF. Lower limit of reporting 0.01 percent. Author defined 3.08 7.58 weight percent MnO_pct Manganese, as manganese oxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 0.12 0.22 weight percent Na2O_pct Sodium, as sodium oxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 2.87 5.93 weight percent P2O5_pct Phosphorus, as phosphorus pentoxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 0.14 0.29 weight percent SiO2_pct Silica, as silica dioxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 43.07 59.66 weight percent SrO_pct Strontium, as strontium oxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 0.01 0.07 weight percent TiO2_pct Titanium, as titanium dioxide, in weight percent, analyzed by XRF. Lower level of reporting 0.01 percent. Author defined 0.66 1.82 weight percent LOI1000_pct Loss on ignition at 1000 degrees C. Lower level of reporting 0.01 percent. Author defined 0.24 8.00 weight percent Ba_ppm Barium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.5 ppm. Author defined 56.2 776 ppm Ce_ppm Cerium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.5 ppm. Author defined 11.6 37.3 ppm Cr_ppm Chromium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 10 ppm. Author defined 10 190 ppm Cs_ppm Cesium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.01 ppm. Author defined 0.13 6.63 ppm Dy_ppm Dysprosium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.05 ppm. Author defined 2.99 6.62 ppm Er_ppm Erbium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.03 ppm. Author defined 1.75 4.11 ppm Eu_ppm Europium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.03 ppm. Author defined 1.00 1.66 ppm Ga_ppm Gallium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.1 ppm. Author defined 16.40 22.60 ppm Gd_ppm Gadolinium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.05 ppm. Author defined 2.78 5.69 ppm Ge_ppm Gadolinium, in parts per million, analyzed by lithium borate fusion ICP-MS. Value -5 indicates a determination less than the lower reporting limit of 5 ppm. Author defined -5 -5 ppm Hf_ppm Hafnium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.2 ppm. Author defined 0.7 5.5 ppm Ho_ppm Holmium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.01 ppm. Author defined 0.60 1.39 ppm La_ppm Lanthanum, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.5 ppm. Author defined 3.8 16.9 ppm Lu_ppm Lutetium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.01 ppm. Author defined 0.20 0.53 ppm Nb_ppm Niobium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.2 ppm. Author defined 0.7 9.3 ppm Nd_ppm Neodymium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.1 ppm. Author defined 8.4 19.3 ppm Pr_ppm Praseodymium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.03 ppm. Author defined 1.89 4.85 ppm Rb_ppm Rubidium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.2 ppm. Author defined 1.9 43.6 ppm Sm_ppm Samarium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.03 ppm. Author defined 2.47 4.94 ppm Sn_ppm Tin, in parts per million, analyzed by lithium borate fusion ICP-MS. Value -1 indicates a determination less than the lower reporting limit of 1 ppm. Author defined -1 1 ppm Sr_ppm Strontium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.1 ppm. Author defined 67.7 647 ppm Ta_ppm Tantalum, in parts per million, analyzed by lithium borate fusion ICP-MS. Value -0.1 indicates a determination less than the lower reporting limit of 0.1 ppm. Author defined -0.1 0.5 ppm Tb_ppm Terbium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.01 ppm. Author defined 0.43 0.96 ppm Th_ppm Thorium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.05 ppm. Author defined 0.13 6.42 ppm Tm_ppm Thulium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.01 ppm. Author defined 0.19 0.56 ppm U_ppm Uranium, in parts per million, analyzed by lithium borate fusion ICP-MS. Value -0.05 indicates a determination less than the lower reporting limit of 0.05 ppm. Author defined -0.05 3.02 ppm V_ppm Vanadium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 5 ppm. Author defined 142 409 ppm W_ppm Tungsten, in parts per million, analyzed by lithium borate fusion ICP-MS. Value -1 indicates a determination less than the lower reporting limit of 1 ppm. Author defined -1 1 ppm Y_ppm Yttrium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.5 ppm. Author defined 16.0 36.8 ppm Yb_ppm Ytterbium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 0.03 ppm. Author defined 1.53 3.86 ppm Zr_ppm Zirconium, in parts per million, analyzed by lithium borate fusion ICP-MS. Lower level of reporting 2 ppm. Author defined 23 212 ppm Ag_ppm Silver, in parts per million, analyzed by four acid digestion ICP-AES. Value -0.5 indicates a determination less than the lower reporting limit of 0.5 ppm. Author defined -0.5 -0.5 ppm Cd_ppm Cadmium, in parts per million, analyzed by four acid digestion ICP-AES. Value -0.5 indicates a determination less than the lower reporting limit of 0.5 ppm. Author defined -0.5 0.5 ppm Co_ppm Cobalt, in parts per million, analyzed by four acid digestion ICP-AES. Lower limit of reporting 1 ppm. Author defined 15 48 ppm Cu_ppm Copper, in parts per million, analyzed by four acid digestion ICP-AES. Lower limit of reporting 1 ppm. Author defined 8 108 ppm Li_ppm Lithium, in parts per million, analyzed by four acid digestion ICP-AES. Value -10 indicates a determination less than the lower reporting limit of 10 ppm. Author defined -10 20 ppm Mo_ppm Molybdenum, in parts per million, analyzed by four acid digestion ICP-AES. Value -1 indicates a determination less than the lower reporting limit of 1 ppm. Author defined -1 1 ppm Ni_ppm Nickel, in parts per million, analyzed by four acid digestion ICP-AES. Lower limit of reporting 1 ppm. Author defined 3 51 ppm Pb_ppm Lead, in parts per million, analyzed by four acid digestion ICP-AES. Value -2 indicates a determination less than the lower reporting limit of 2 ppm. Author defined -2 2 ppm Sc_ppm Scandium, in parts per million, analyzed by four acid digestion ICP-AES. Lower limit of reporting 1 ppm. Author defined 13 48 ppm Zn_ppm Zinc, in parts per million, analyzed by four acid digestion ICP-AES. Lower limit of reporting 2 ppm. Author defined 64 149 ppm As_ppm Arsenic, in parts per million, analyzed by ICP-MS. Lower limit of reporting 0.1 ppm. Author defined 0.5 4.5 ppm Bi_ppm Bismuth, in parts per million, analyzed by ICP-MS. Lower limit of reporting 0.01 ppm. Author defined 0.01 0.05 ppm Hg_ppm Mercury, in parts per million, analyzed by ICP-MS. Value of -0.005 indicates a determination less than the lower reporting limit of 0.005 ppm. Author defined -0.005 0.091 ppm In_ppm Indium, in parts per million, analyzed by ICP-MS. Lower limit of reporting 0.005 ppm. Author defined 0.009 0.075 ppm Re_ppm Rhenium, in parts per million, analyzed by ICP-MS. Value of -0.001 indicates a determination less than the lower reporting limit of 0.001 ppm. Author defined -0.001 0.001 ppm Sb_ppm Antimony, in parts per million, analyzed by ICP-MS. Value of -0.05 indicates a determination less than the lower reporting limit of 0.05 ppm. Author defined -0.05 0.12 ppm Sc_ppm Scandium, in parts per million, analyzed by ICP-MS. Lower limit of reporting 0.1 ppm. Author defined 3.2 37.7 ppm Se_ppm Selenium, in parts per million, analyzed by ICP-MS. Value of -0.2 indicates a determination less than the lower reporting limit of 0.2 ppm. Author defined -0.2 0.3 ppm Te_ppm Tellurium, in parts per million, analyzed by ICP-MS. Value of -0.01 indicates a determination less than the lower reporting limit of 0.01 ppm. Author defined -0.01 0.02 ppm Tl_ppm Thallium, in parts per million, analyzed by ICP-MS. Value of -0.02 indicates a determination less than the lower reporting limit of 0.02 ppm. Author defined -0.02 0.17 ppm S_pct Sulfur, in weight percent, analyzed by ICP-MS. Lower limit of reporting 0.01 percent. Author defined 0.01 0.22 weight percent C_pct Carbon, in weight percent, analyzed by ICP-MS. Lower limit of reporting 0.01 percent. Author defined 0.01 1.47 weight percent U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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