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Sample ID:UT506
Station ID:UT506
Sample Type 1:Tephra Fall
Text Description:
30 cm thick; fine grained and moderately to poorly sorted; in loess that mantles weathered schist (Westgate et al. 1983)

Distribution, stratigraphy, petrochemistry and palaeomagnetism of the late Pleistocene Old Crow tephra in Alaska and the Yukon

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
UT50664.717-148.45Westgate, 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).No location description provided; in Westgate et al. (1983), sample UT739 is described as coming from a road cut along the north side of the Fairbanks-Nenana Highway, 3 km east of Halfway House; exposes loess with paleosols and two tephra beds above weathered schist (see Fig. 8 in Westgate et al. 1983).30 cm thick; fine grained and moderately to poorly sorted; in loess that mantles weathered schist (Westgate et al. 1983)UT506Tephra FallCumulateGlass 3.68 1792INAA2.32 3.5 1000 25.8 54.5 5.57 1 1 3.8 0.71 6.6 0.9 9.9 4.2 7.3 1792INAA


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