{"action":"create","ckan_id":null,"date_created":"Sat, 28 Mar 2026 21:07:45 GMT","date_finished":null,"harvest_job_id":"c87df6d4-55a4-4157-8f97-1f84fe294e8c","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"162a6caf-1ef9-49f6-881d-52ca57bc0656","identifier":"https://dggs.alaska.gov/webpubs/metadata/RDF2008-4.xml","parent_identifier":null,"source_hash":"f68cb538e7a5d586fb887eebf9de748fad0d29c81c9facebc5426adf9e955f9e","source_raw":"\r\n\r\n\r\n\r\n\r\nLayer, P.W.\r\nSolie, D.N.\r\n2008\r\n40Ar/39Ar ages from the Tyonek D-6 quadrangle and parts of Tyonek D-7, Tyonek D-5 and Tyonek C-6 quadrangles, Alaska\r\ntabular digital data\r\n\r\nRaw Data File\r\nRDF 2008-4\r\n\r\n\r\nFairbanks, Alaska - USA\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\n14 pp.\r\nhttp://dx.doi.org/10.14509/16521\r\n\r\n\r\n\r\n40Ar/39Ar data from plutonic and volcanic samples collected during preliminary mapping of the Tyonek D-6 and parts of Tyonek D-5, D-7 and C-6 quadrangles yield results indicating three discrete igneous events at about 55, 60 and 68 Ma. Igneous clasts from a boulder conglomerate retain Early Cretaceous ages.\r\nIn 1990, DGGS conducted a preliminary geologic mapping project in the Tyonek D-6 and parts of the adjacent D-5, D-7 and C-6 quadrangles. DGGS published a preliminary geologic map and geochemical data resulting from that initial work in 1991 (Solie and others, 1991a and 1991b). At that time, the results from the 40Ar/39Ar age dating were pending. A brief discussion of the results was given in Layer and Solie (1991) and Solie and Layer (1993). The purpose of this DGGS Raw Data File is to present the 40Ar/39Ar results and make them available for use to others interested in the area.\r\n\r\nAttribute information for the following tables (entities) is included in this metadata file under the "Entity_and_Attribution_Information" section. The tables are as follows:\r\n>Table1_coordinates Coordinates for 40Ar/39Ar samples\r\n>Table2_agesummary Summary table for 40Ar/39Ar data\r\n>Table3_analyticaldata The 40Ar/39Ar analytical data associated with each recorded temperature\r\n\r\n\r\n\r\n\r\n\r\n1990\r\n1991\r\n\r\n\r\nground condition\r\n\r\n\r\nComplete\r\nNone planned\r\n\r\n\r\n\r\n-152.3361\r\n-151.8734\r\n61.9254\r\n61.6924\r\n\r\n\r\n\r\n\r\nISO 19115 Topic Category\r\ngeoscientificInformation\r\n\r\n\r\nNone\r\nGeology\r\n40Ar/39Ar\r\nAge Dates\r\nGeochronology\r\n\r\n\r\nNone\r\nTyonek Quadrangle\r\n\r\n\r\nNone\r\nCretaceous\r\nPaleocene\r\nEarly Cretaceous\r\n\r\n\r\nThis report and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).\r\nAny hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.\r\n\r\n\r\n\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\nGIS Data Manager/Cartographer\r\n\r\nmailing and physical\r\n
3354 College Road
\r\nFairbanks\r\nAK\r\n99709-3707\r\n\r\n(907) 451-5029\r\n(907) 451-5020\r\n(907) 451-5050\r\ndggspubs@alaska.gov\r\nYou may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change.\r\n\r\n\r\nThis research was supported by State funding to the Alaska Division of Geological & Geophysical Surveys. Additional Acknowledgments: 1990 DGGS field mapping and sample collection by DN. Solie, J.T. Kline (deceased), W.G. Gilbert, E.E. Harris, M.S. Robinson, S.A. Liss and K.K. DePalma. Review of draft manuscript by D.J. Szumigala.\r\nMicrosoft Windows XP SP2, Microsoft Excel 2003\r\n\r\n\r\n\r\n\r\nAll field locations were visually determined by the geologists in the field and recorded on a 1:63,360 topographic map enlarged to a scale of 1:40,000. Coordinates were digitized visually from the field maps.\r\nDGGS submitted fourteen rock samples to the UAF Geochronology Laboratory for 40Ar/39Ar dating. Major oxide and selected trace element analyses for most of the samples are included in Solie and others (1991b). Separates for 40Ar/39Ar dating were prepared to >99.5% purity (visual inspection) using standard heavy liquid and magnetic separation techniques followed by hand-picking under a binocular microscope. Thin section examination of the samples prior to crushing indicated that the chosen minerals were free from alteration and sufficiently coarse-grained for mechanical separation. For all minerals, grains in the size range of 250 - 500 microns were used. For each sample, ~50-80 mg of biotite or 250-350 mg of hornblende or whole rock (phenocryst-free groundmass) was packaged in an aluminum foil tube and irradiated in position 5C at the McMaster University nuclear reactor, in Hamilton, Ontario. Approximately 20 samples were irradiated at a time. Six packages containing ~20 mg of the standard mineral mmhb-1 (Samson and Alexander, 1987) with an age of 513.9 Ma (Lanphere and others, 1990) were also irradiated with the samples to determine the irradiation parameter (J) and the flux gradient in the reactor. Samples and standards were analyzed 45 to 90 days after irradiation.\r\nThe irradiated samples were step-heated on-line in a Modifications Ltd. low-blank furnace. Temperature control was better than 5 degrees and a maximum temperature in excess of 1600o C was achievable to ensure complete sample fusion. The extracted argon was purified in a two-stage process using a liquid nitrogen cold finger and two SAES Zr-Al getters. Prior to measurement of the Ar, the gas was collected on an activated charcoal finger. The purified Ar gas was measured using a Nuclide 6-60-SGA 15 cm mass spectrometer. The sensitivity of the spectrometer is 6.5 x 10-15 mol/mV and system noise is generally around 0.02 mV. System blanks are generally better than 1 X 10-14 mol for 40Ar. Argon isotopic measurements for both samples and standards were corrected for the system blanks, for decay of 37Ar and 39Ar, and for reactor-induced isotopic interferences. Ages were calculated using the equations and corrections from McDougall and Harrison (1999) and the constants from Steiger and Jaeger (1977) and are shown in Table 2 (age summary) and Table 3 (analytical data). All errors on analyses are reported at the 1-sigma level.\r\nFor each mass spectrometer analysis, five Ar isotope abundances are measured. 36Ar is used to determine the amount of atmospheric or initial Ar in the sample, 37Ar provides an estimation of the Ca content in the mineral, 38Ar provides an estimation of the Cl content, 39Ar reflects the K content and 40Ar is a mixture of initial and radiogenic Ar. The age of the sample is proportional to the ratio of the amount of radiogenic 40Ar to the amount of 39Ar produced by neutron bombardment from 40K.\r\n\r\n\r\nNo topologic relationships are present in the data.\r\nThis dataset includes all of the samples submitted for 40Ar/39Ar age date analyses from the Tyonek quadrangle which were collected by DGGS during the summer of 1990.\r\n\r\n\r\nSample locations were determined visually by geologist in the field, using a Brunton compass and altimeter and topographic map. Locations were then digitized visually from the field maps using ArcGIS v9.2.\r\n\r\n100\r\nThe sample locations were found in the field using a compass and altimeter. Considering the errors inherent in the USGS topographic maps, locating oneself in the field, and the methods of digitizing stations, samples are located to an accuracy of between 10 and 100 meters.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLanphere, M.A.\r\nDalrymple, G.B.\r\nFleck, R.J.\r\nPringle, M.S.\r\n1990\r\nIntercalibration of mineral standards for K/Ar and 40Ar/39Ar age measurements\r\njournal article\r\n\r\nEOS Transactions of the American Geophysical Union\r\nv. 71\r\n\r\n(abstract), P. 1658\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1990\r\n\r\n\r\npublication date\r\n\r\nLanphere and others, 1990\r\nDescribes intercalibration standards\r\n\r\n\r\n\r\n\r\nLayer, P.W.\r\nSolie, D.N.\r\n1991\r\nTiming of igneous activity and basin formation, southern Alaska Range, as constrained by 40Ar/39Ar dating\r\njournal article\r\n\r\nEOS Transactions of the American Geophysical Union\r\nv.72, no. 44\r\n\r\n(abstract), p. 503\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1991\r\n\r\n\r\npublication date\r\n\r\nLayer and Solie, 1991\r\nAbstract discussing age results\r\n\r\n\r\n\r\n\r\nMcDougall, I\r\nHarrison, T.M.\r\n1999\r\nGeochronology and Thermochronology by the 40Ar/39Ar method\r\n2\r\nbook chapter\r\n\r\nOxford\r\nOxford University Press\r\n\r\n269 pp.\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1999\r\n\r\n\r\npublication date\r\n\r\nMcDougall and others, 1999\r\nSource reference for equations and corrections used in age calculation.\r\n\r\n\r\n\r\n\r\nSamson, S.D.\r\nAlexander, E.C.\r\n1987\r\nCalibration of the interlaboratory 40Ar/39Ar dating standard, MMhb-1\r\ndocument\r\n\r\nChemical Geology\r\nv. 66\r\n\r\np. 27-34\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1987\r\n\r\n\r\npublication date\r\n\r\nSamson and Alexander, 1987\r\nInterlaboratory calibration data for age determination\r\n\r\n\r\n\r\n\r\nSolie, D.N.\r\nKline, J.T.\r\nGilbert, W.G.\r\nRobinson, M.S.\r\nHarris, E.E.\r\nLiss, S.A.\r\n1991\r\nAnalytical results from rock and pan concentrate samples, Tyonek D-6 and parts of adjacent quadrangles, Alaska\r\ndocument\r\n\r\nPublic Data File\r\nPDF 91-1\r\n\r\n14 pp., 1 sheet, scale 1:63,360\r\nhttp://dx.doi.org/10.14509/1468\r\n\r\n\r\nonline\r\n\r\n\r\n\r\n1991\r\n\r\n\r\npublication date\r\n\r\nSolie and others, 1991b\r\nGeochemical data from samples collected from project area; sample location map\r\n\r\n\r\n\r\n\r\nSolie, D.N.\r\nGilbert, W.G.\r\nHarris, E.E.\r\nKline. J.T.\r\nLiss, S.A.\r\nRobinson, M.S.\r\n1991\r\nPreliminary geologic map of Tyonek d-6 and eastern Tyonek D-7 quadrangles, Alaska\r\ndocument\r\n\r\nPublic Data File\r\nPDF 91-10\r\n\r\n16 pp., 1 sheet, scale 1:40,000\r\nhttp://dx.doi.org/10.14509/1477\r\n\r\n\r\nonline\r\n\r\n\r\n\r\n1991\r\n\r\n\r\npublication date\r\n\r\nSolie and others, 1991a\r\nPreliminary map of project area\r\n\r\n\r\n\r\n\r\nSolie, D.N.\r\nLayer, P.W.\r\n1993\r\nThe Hayes Glacier Fault, southern Alaska Range: Evidence for post-paleocene movement\r\nmap\r\n\r\nProfessional Report\r\nPR 106\r\n\r\n\r\nFairbanks, AK, USA\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\np. 71-80\r\nhttp://dx.doi.org/10.14509/2312\r\n\r\n\r\nSolie, D.N.\r\nTannian, Fran\r\n1993\r\nShort Notes on Alaskan Geology 1993\r\n\r\nProfessional Report\r\nPR 113\r\n\r\n\r\nFairbanks, AK, USA\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\n99 pp.\r\nhttp://dx.doi.org/10.14509/2304\r\n\r\n\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1993\r\n\r\n\r\npublication date\r\n\r\nSolie and Layer, 1993\r\nincludes discussion of age results\r\n\r\n\r\n\r\n\r\nSteiger, R.H.\r\nJager, E\r\n1977\r\nSubcommission on geochronology: convention on the use of decay constants in geo- and cosmochronology\r\ndocument\r\n\r\nEarth and Planetary Science Letters\r\nv.36\r\n\r\np. 359-363\r\n\r\n\r\npaper\r\n\r\n\r\n\r\n1977\r\n\r\n\r\npublication date\r\n\r\nSteiger and Jager, 1977\r\ndiscussion of use of decay constants in age determination\r\n\r\n\r\n\r\nFieldwork - The Tyonek D-6 and parts of the D-5, D-7 and C-6 quadrangles were mapped in 1990 as a preliminary project in anticipation of a continued 1:63,360 mapping project in the Tyonek quadrangle. Preliminary mapping was conducted from July 20 to August 4, 1990. Members of the field crew were DGGS staff members D.N. Solie, W.G. Gilbert, E.E. Harris, J.T. Kline, S.A. Liss, M.S. Robinson and Keri DePalma. Funding did not allow the continuation of the project, and the results of the 1990 mapping were released as a preliminary geologic map (Solie and others, 1991a). Geochemical data from samples collected during the mapping project were published in 1991 (Solie and others, 1991b). At that time, the results from the 40Ar/39Ar dating were pending. A brief discussion of the results was given in Layer and Solie (1991) and Solie and Layer (1993).\r\nPreliminary mapping was conducted in 1993 in the course of 1 1/2 weeks in which mile to inch mapping of the outcrop belt of the Tingmerkpuk Sandstone was begun. In addition, measurement of a well exposed section on Tingmerkpuk Mountain, study of depositional environment of sandstones, and sampling for micropaleontology, organic geochemistry, and apatite fission track analysis was carried out. Additional mapping of the Tingmerkpuk outcrop belt and stratigraphic studies throughout the area were continued in a brief one-week field program in 1994, and in a one-month program in 1996. In these programs, reconnaissance sampling for organic geochemistry and micropaleontology, detailed stratigraphic studies of a distinctive limestone coquina and two stratigraphic sections of Upper Triassic to Hauterivian rocks, and samples for apatite fission-track cooling and uplift history were collected. Continued geologic mapping and study of Neocomian depositional environment as well as additional sampling was conducted in the final month long field season in 1998. Surficial deposits were interpreted from 1:63,360 scale aerial photographs, incorporating limited field observations made during traverses while mapping bedrock units, and by aerial reconnaissance. Published data (Chapman and Sable, 1960) served as a guide for interpretation. No glacial deposits are recognized in the Kukpowruk River area, as Quaternary glaciation apparently did not occur on the north side of the western DeLong Mountains. Bedrock mapping involved using aerial photographs and topographic maps on a daily basis for checking geologic contacts and units. Mappers recorded observations in field notebooks and on the aerial photographs and topographic maps, predominantly at 1:63,360 scale. In some areas, photocopies of topography at varying enlarged scales were used. All compilations were made by hand on stable Mylar at 1:63,360 scale. Stations were located using aerial photographs, topographic maps, compasses, and altimeters. In some instances, GPS devices with location precision varying up to 100 meters were used. Stations were also plotted by hand on stable Mylar topographic bases and coordinates determined with a digitizing tablet.\r\n\r\nSolie and others, 1991a\r\nSolie and others, 1991b\r\nLayer and Solie, 1991\r\nSolie and Layer, 1993\r\n199007\r\n\r\n\r\n\r\nLabwork - Separates for 40Ar/39Ar dating were prepared to >99.5 percent purity (visual inspection) using standard heavy liquid and magnetic separation techniques followed by hand-picking under a binocular microscope. Thin section examination of the samples prior to crushing indicated that the chosen minerals were free from alteration and sufficiently coarse-grained for mechanical separation. For all minerals, grains in the size range of 250 - 500 microns were used. For each sample, ~50-80 mg of biotite or 250-350 mg of hornblende or whole rock (phenocryst-free groundmass) was packaged in an aluminum foil tube and irradiated in position 5C at the McMaster University nuclear reactor, in Hamilton, Ontario. Approximately 20 samples were irradiated at a time. Six packages containing ~20 mg of the standard mineral mmhb-1 (Samson and Alexander, 1987) with an age of 513.9 Ma (Lanphere and others, 1990) were also irradiated with the samples to determine the irradiation parameter (J) and the flux gradient in the reactor. Samples and standards were analyzed 45 to 90 days after irradiation.\r\nThe irradiated samples were step-heated on-line in a Modifications Ltd. low-blank furnace. Temperature control was better than 5 degrees and a maximum temperature in excess of 1600o C was achievable to ensure complete sample fusion. The extracted argon was purified in a two-stage process using a liquid nitrogen cold finger and two SAES Zr-Al getters. Prior to measurement of the Ar, the gas was collected on an activated charcoal finger. The purified Ar gas was measured using a Nuclide 6-60-SGA 15 cm mass spectrometer. The sensitivity of the spectrometer is 6.5 x 10-15 mol/mV and system noise is generally around 0.02 mV. System blanks are generally better than 1 X 10-14 mol for 40Ar. Argon isotopic measurements for both samples and standards were corrected for the system blanks, for decay of 37Ar and 39Ar, and for reactor-induced isotopic interferences. Ages were calculated using the equations and corrections from McDougall and Harrison (1999) and the constants from Steiger and Jaeger (1977). All errors on analyses are reported at the 1-sigma level.\r\nFor each mass spectrometer analysis, five Ar isotope abundances are measured. 36Ar is used to determine the amount of atmospheric or initial Ar in the sample, 37Ar provides an estimation of the Ca content in the mineral, 38Ar provides an estimation of the Cl content, 39Ar reflects the K content and 40Ar is a mixture of initial and radiogenic Ar. The age of the sample is proportional to the ratio of the amount of radiogenic 40Ar to the amount of 39Ar produced by neutron bombardment from 40K.\r\n\r\nSamson and Alexander, 1987\r\nLanphere and others, 1990\r\nMcDougall and Harrison, 1999\r\nSteiger and Jaeger, 1977\r\n1991\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nUniversal Transverse Mercator\r\n\r\n5\r\n\r\n0.999600\r\n-153.000\r\n0.0\r\n500000\r\n0\r\n\r\n\r\n\r\n\r\ncoordinate pair\r\n\r\n1\r\n1\r\n\r\nmeters\r\ntabular data\r\n\r\n\r\n\r\nNorth American Datum of 1927\r\nClarke 1866\r\n6378206.4\r\n294.978698\r\n\r\n\r\n\r\n\r\n\r\n\r\nTable1_coordinates.csv\r\nCoordinates for 40Ar/39Ar samples\r\nAlaska Division of Geological & Geophysical Surveys\r\nTable1_coordinates\r\n\r\n\r\nSampleNo\r\nItems in the Sample Number field\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\nSample numbers are unique identifiers derived from the last two digits of the year the sample was collected, initials of the geologist's name who collected it, and the consecutively numbered station location. If more than one sample was collected from the station location, each is assigned a letter (a, b, c, etc) designator as well.\r\n\r\n\r\n\r\nEasting\r\nUTM easting coordinate, Zone 5, NAD 27\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n534911\r\n559281\r\nm\r\n\r\n\r\n\r\n\r\nNorthing\r\nUTM northing coordinate, Zone 5, NAD 27\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n6840075\r\n6866077\r\nm\r\n\r\n\r\n\r\n\r\nLatitude\r\nLatitude coordinate, NAD 27\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n61.6924\r\n61.9254\r\ndecimal degree\r\n\r\n\r\n\r\n\r\nLongitude\r\nLongitude coordinate, NAD27\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n151.8734\r\n152.3361\r\ndecimal degree\r\n\r\n\r\n\r\n\r\n\r\n\r\nTable2_agesummary.csv\r\nSummary table for 40Ar/39Ar data\r\nAlaska Division of Geological & Geophysical Surveys\r\nTable2_agesummary\r\n\r\n\r\nSampleNo\r\nItems in the Sample Number field\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\nSample numbers are unique identifiers derived from the last two digits of the year the sample was collected, initials of the geologist's name who collected it, and the consecutively numbered station location. If more than one sample was collected from the station location, each is assigned a letter (a, b, c, etc) designator as well.\r\n\r\n\r\n\r\nMineral\r\nMaterial used for age date\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\nMaterial used for dating. Includes BI (biotite), HO (hornblende), WR (whole rock).\r\n\r\n\r\n\r\nIntegrated Age (Ma)\r\nIntegrated age in million years,\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n54.1 +/-0.5\r\n99.5 +/-0.7\r\nMa\r\n\r\n\r\n\r\n\r\nPlateau or Weighted Mean Age\r\nSummarizes the Plateau (P) Age or the Weighted Mean (W) Age in Million years for each sample\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n53.7 +/-0.4\r\n101.0 +/-2.0\r\nMa\r\n\r\n\r\n\r\n\r\nPlateau Information\r\nSummarizes number of fractions, percent 39Ar released and MSWD for each sample\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n# of fractions, % 39Ar released, MSWD for each sample\r\n\r\n\r\n\r\n\r\n\r\nTable3_analyticaldata.csv\r\nFor each sample, the 40Ar/39Ar analytical data associated with each recorded temperature\r\nAlaska Division of Geological & Geophysical Surveys\r\nTable3_analyticaldata\r\n\r\n\r\nSampleNo\r\nItems in the Sample Number field\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\nSample numbers are unique identifiers derived from the last two digits of the year the sample was collected, initials of the geologist's name who collected it, and the consecutively numbered station location. If more than one sample was collected from the station location, each is assigned a letter (a, b, c, etc) designator as well.\r\n\r\n\r\n\r\nTemp\r\nTemperature in Degrees C of step for which data were recorded\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n300\r\n1700\r\nDegrees C\r\n\r\n\r\n\r\n\r\nCum. 39Ar\r\nCumulative 39Argon\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0000\r\n1.0000\r\n\r\n\r\n\r\n\r\n40Ar/39Ar measured\r\nMeasured 40Ar/39Ar ratio at each heating step, corrected for blank and 39Ar decay\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n2.5705\r\n1134.98\r\n\r\n\r\n\r\n\r\n+/-\r\nDefines the size of the error bars for each measurement to one standard deviation\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0001\r\n200.0000\r\n\r\n\r\n\r\n\r\n37Ar/39Ar measured\r\nThe ratio of 37Ar to 39Ar measured at each temperature interval for each sample corrected for blank and 37Ar and 39Ar decay\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0001\r\n400.0000\r\n\r\n\r\n\r\n\r\n36Ar/39Ar\r\nRatio of amounts of 36Ar to 39Ar measured at each temperature interval for each sample corrected for blank and 39Ar decay\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0000\r\n0.4000\r\n\r\n\r\n\r\n\r\n% Atm. 40Ar\r\nPercent of 40Ar which is atmospheric in composition\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0\r\n220.0\r\n\r\n\r\n\r\n\r\nCa/K\r\nratio of Calcium to Potassium as determined from 37Ar/39Ar\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0000\r\n1000.0000\r\n\r\n\r\n\r\n\r\nCl/K\r\nratio of Chlorine to Potassium as determined from 38Ar/39Ar\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.00000\r\n0.80000\r\n\r\n\r\n\r\n\r\n40Ar*/39ArK\r\nratio of radiogenic 40Ar to 39Ar derived from potassium\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n-111.0000\r\n140.0000\r\n\r\n\r\n\r\n\r\nAge (Ma)\r\ncalculated age for each temperature step for each sample\r\nAlaska Division of Geological & Geophysical Surveys\r\n\r\n\r\n0.0\r\n150.0\r\nMa\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\nNatural Resource Technician\r\n\r\nmailing and physical\r\n
3354 College Road
\r\nFairbanks\r\nAK\r\n99709-3707\r\nUSA\r\n\r\n907-451-5020\r\nNone available.\r\n907-451-5050\r\ndggspubs@alaska.gov\r\n8 am to 4:30 pm, Monday through Friday, except State holidays\r\nPlease view our Web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.\r\n\r\n\r\nRaw Data File 2008-4\r\nThe State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.\r\n\r\nCurrent publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard.\r\nPrinted publication can be purchased for $2.00 (contact information below) plus shipping if mailed.\r\n\r\n\r\n\r\n\r\nPDF\r\n1.6\r\nNo compression applied\r\n\r\n\r\n\r\n\r\n\r\nhttp://dx.doi.org/10.14509/16521\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCSV\r\n2008\r\nNo compression applied\r\n\r\n\r\n\r\n\r\n\r\nhttp://dx.doi.org/10.14509/16521\r\n\r\n\r\n\r\n\r\nCD-ROM\r\nJoliet\r\n\r\n\r\n\r\nDigital files on CD-ROM are available for $10.00 (contact information below). Scanned images of these products may be viewed online or downloaded for free from the DGGS Web site.\r\nOrder by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard.\r\n\r\nCSV (Comma Separated Value) files can be imported and formatted with Microsoft Excel, OpenOffice.org Calc, or most spreadsheet programs and can also be viewed with most text editing programs.\r\n\r\n\r\n20080605\r\n20080605\r\n20100604\r\n\r\n\r\n\r\nState of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys\r\n\r\nMetadata Manager\r\n\r\nmailing and physical address\r\n
3354 College Road
\r\nFairbanks\r\nAK\r\n99709-3707\r\nUSA\r\n\r\n907-451-5039\r\n907-451-5050\r\ndggspubs@alaska.gov\r\n8 am to 4:30 pm, Monday through Friday, except State holidays.\r\nPlease contact us through the e-mail address above whenever possible.\r\n\r\n\r\nFGDC Content Standard for Digital Geospatial Metadata\r\nFGDC-STD-001-1998\r\nnone\r\nIf the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.\r\n\r\n\r\n","source_transform":null,"status":"error"}