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SAMPLE INFO : UA339
Sample ID:UA339
Station ID:UA339
Latitude:62.5166
Longitude:-140.9347
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
<1.5 cm thick. 2 m below surface in silts overlying the Mirror Creek Till (V. Rampton, written comm., 1971; in Preece et al., 2011).

References:
Discovery of a large-magnitude, late Pleistocene volcanic eruption in Alaska
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

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
UA33962.5166-140.9347Unknown, 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).Mirror Creek, Alaska. Datum not specified, assumed to be NAD83. <1.5 cm thick. 2 m below surface in silts overlying the Mirror Creek Till (V. Rampton, written comm., 1971; in Preece et al., 2011).UA339Tephra FallCumulateGlass 3.7 1792INAA2.34 25.3 54 24 5.8 0.97 0.8 1.6 3.8 0.7 5.7 0.8 7.3 3.9 5.9 1183INAA
UA33962.5166-140.9347Unknown, 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).Mirror Creek, Alaska. Datum not specified, assumed to be NAD83. <1.5 cm thick. 2 m below surface in silts overlying the Mirror Creek Till (V. Rampton, written comm., 1971; in Preece et al., 2011).UA339Tephra FallCumulateGlass 75.33 0.26 13.16 1.72 0.05 0.29 1.44 3.8 3.69 10271EMP1.72Cl=0.26; H2O=5.04EMP 4 900 25.3 53.8 24 6 0.97 0.9 3.8 0.7 5.7 0.8 9.7 3.9 7.1 1792INAA
UA33962.5166-140.9347Unknown, 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).Mirror Creek, Alaska. Datum not specified, assumed to be NAD83. <1.5 cm thick. 2 m below surface in silts overlying the Mirror Creek Till (V. Rampton, written comm., 1971; in Preece et al., 2011).UA339Tephra FallCumulateGlass Cl=0.26; H2O=5.04EMP 4.2 98 956 144 25.4 54.8 6.11 25.2 6.18 0.96 5.35 0.95 5.67 1.34 3.61 0.57 3.7 0.56 34.9 239 6.83 9.46 4.28 5.89 10271ICPMS

SAMPLE LOCATION

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