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SAMPLE INFO : UT976
Sample ID:UT976
Station ID:UT976
Latitude:66.7805
Longitude:-162.20416
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
0.5 to 1 cm thick. Occurs as discontinuous pods in bedded clayey silt and clay near base of organic-rich silt (loess) with prominent log layers. The organic-rich silts underlie Holocene peat and thaw lake deposits. Tephra is at 23 m on figure 13 of Hamilton and Brigham-Grette (1991). Brigham-Grette, written comm. 31/10/2008.

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
UT97666.7805-162.20416Unknown, 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).Baldwin Peninsula, Alaska. Datum not specified, assumed to be NAD83. 0.5 to 1 cm thick. Occurs as discontinuous pods in bedded clayey silt and clay near base of organic-rich silt (loess) with prominent log layers. The organic-rich silts underlie Holocene peat and thaw lake deposits. Tephra is at 23 m on figure 13 of Hamilton and Brigham-Grette (1991). Brigham-Grette, written comm. 31/10/2008.UT976Tephra FallCumulateGlass 75.36 0.28 13.15 1.7 0.05 0.29 1.46 3.74 3.7 10271EMP1.7Cl=0.28; H2O=5.04EMP 4.42 103 990 135 25.2 52.9 5.91 24.2 6.08 1.01 4.98 0.96 5.34 1.33 3.54 0.54 3.69 0.58 35.4 254 6.73 9.23 4.21 5.85 10271ICPMS

SAMPLE LOCATION

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