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SAMPLE INFO : UT1714
Sample ID:UT1714
Station ID:NK26B
Latitude:68.0875
Longitude:-158.4772
Datum:NAD83
Sample Type 1:Tephra Fall
 Text Description:
4 cm thick. Small pods of tephra within dark brown, organic-rich silt with many cobbles and some peaty patches. These flood-plain deposits fill depressions on the surface of underlying gravel (unit 5 of Elias et al., 1999) and are overlain by glaciolacustrine stony mud (unit 6 of Elias et al., 1999).

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

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
NK26B68.0875-158.4772Unknown, 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).Noatak River, Alaska. Datum not specified, assumed to be NAD83. 4 cm thick. Small pods of tephra within dark brown, organic-rich silt with many cobbles and some peaty patches. These flood-plain deposits fill depressions on the surface of underlying gravel (unit 5 of Elias et al., 1999) and are overlain by glaciolacustrine stony mud (unit 6 of Elias et al., 1999).UT1714Tephra FallCumulateGlass 75.41 0.33 13.08 1.7 0.06 0.28 1.48 3.66 3.72 10271EMP1.7Cl=0.28; H2O=4.07EMP 4.29 101 1015 136 25.3 52.9 5.96 24.3 5.72 1 5.18 0.96 5.54 1.32 3.59 0.56 3.82 0.57 34.8 251 6.76 9.66 3.95 5.88 10271ICPMS

SAMPLE LOCATION

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