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SAMPLE INFO : UT1407
Sample ID:UT1407
Station ID:DK95-25
Latitude:59.03805
Longitude:-161.18916
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Tephra that is a few mm thick and occurs as reworked pumiceous lapilli forming small-scale cross-sets in well-sorted, fine sand of a composite ridge that is part of the early Wisconsin drift sheet. Located 25.5 m above sea level.

References:
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory
Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6
The application of ICP-MS methods to tephrochronological problems
The last interglacial to glacial transition, Togiak Bay, southwestern Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialCoeffSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
DK95-2559.03805-161.18916Unknown, Unknown 124000 ± 10000 known unit; 10271; Age is approximate. Revised glass fission-track age with re-calibration; four Old Crow Tephra sample glass fission-track ages (UT1434, UT613, UT501, UT613).Goodnews Bay, southwest Alaska. Datum not specified, assumed to be NAD83. Tephra that is a few mm thick and occurs as reworked pumiceous lapilli forming small-scale cross-sets in well-sorted, fine sand of a composite ridge that is part of the early Wisconsin drift sheet. Located 25.5 m above sea level.UT1407Tephra FallCumulateGlass 75.45 0.3 13.06 1.74 0.07 0.26 1.47 3.75 3.63 10631EMP1.74Cl=0.28; H2O=3.55EMP 2.68 93 973 126 30.1 57.2 7.52 28.9 6.2 0.79 4.24 1.09 6.3 1.47 4.24 0.56 3.65 0.63 32.5 256 8.29 7.22 0.66 8.78 3.39 10301LA-ICP
DK95-2559.03805-161.18916Unknown, Unknown 124000 ± 10000 known unit; 10271; Age is approximate. Revised glass fission-track age with re-calibration; four Old Crow Tephra sample glass fission-track ages (UT1434, UT613, UT501, UT613).Goodnews Bay, southwest Alaska. Datum not specified, assumed to be NAD83. Tephra that is a few mm thick and occurs as reworked pumiceous lapilli forming small-scale cross-sets in well-sorted, fine sand of a composite ridge that is part of the early Wisconsin drift sheet. Located 25.5 m above sea level.UT1407Tephra FallCumulateGlass 75.44 0.3 13.07 1.74 0.07 0.26 1.47 3.75 3.63 10271EMP1.74Cl=0.28; H2O=3.55EMP 4.13 103 1060 145 26.1 55.2 6.11 25.1 5.84 1.03 5.58 0.99 6 1.41 3.83 0.58 3.89 0.64 36 259 7.82 10.56 4.59 6.47 10271ICPMS

SAMPLE LOCATION

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