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SAMPLE INFO : UT543
Sample ID:UT543
Station ID:UT543
Latitude:65.8172
Longitude:-144.3
Datum:NAD83
Sample Type 1:Tephra Fall
 Text Description:
17 cm thick; fine grained and moderately to poorly sorted; in middle of 30 m thick silt deposits with several prominent organic-rich horizons; overlies 10 m of fluvial gravels (M. Edwards, written communication, 1983)

References:
Distribution, stratigraphy, petrochemistry and palaeomagnetism of the late Pleistocene Old Crow tephra in Alaska and the Yukon
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
UT54365.8172-144.3Westgate, J. A. 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).Birch Creek, Alaska. Sample from near the Circle end of the Steese Highway, Alaska. Location coordinates from Preece et al. (2011). Datum not specified, assumed to be NAD83.17 cm thick; fine grained and moderately to poorly sorted; in middle of 30 m thick silt deposits with several prominent organic-rich horizons; overlies 10 m of fluvial gravels (M. Edwards, written communication, 1983)UT543Tephra FallCumulateGlass 3.65 1792INAA1.9 3.7 1000 25.2 49.7 5.53 0.6 0.8 3.7 0.61 6.7 0.9 10 4.2 7 1792INAA
UT54365.8172-144.3Westgate, J. A. 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).Birch Creek, Alaska. Sample from near the Circle end of the Steese Highway, Alaska. Location coordinates from Preece et al. (2011). Datum not specified, assumed to be NAD83.17 cm thick; fine grained and moderately to poorly sorted; in middle of 30 m thick silt deposits with several prominent organic-rich horizons; overlies 10 m of fluvial gravels (M. Edwards, written communication, 1983)UT543Tephra FallCumulateGlass 75.48 0.28 13.09 1.69 0.07 0.3 1.46 3.64 3.76 10271EMP1.69Cl=0.25; H2O=5.22EMP 4.47 96 925 142 25.8 54.1 6.09 24.7 5.74 0.9 4.74 0.92 5.55 1.31 3.53 0.57 3.56 0.57 35.9 253 7.01 10.27 4.52 5.56 10271ICPMS

SAMPLE LOCATION

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