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SAMPLE INFO : UT371
Sample ID:UT371
Station ID:Imruk_Lake_core_V
Latitude:65.215
Longitude:-163.121
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
10 cm thick; fine grained and moderately to poorly sorted; occurs at a depth of 525 to 535 cm in Lake Imuruk V core witin the GIV pollen subzone (Shackleton 1982)

References:
Discovery of a large-magnitude, late Pleistocene volcanic eruption in Alaska
Distribution, stratigraphy, petrochemistry and palaeomagnetism of the late Pleistocene Old Crow tephra in Alaska and the Yukon
Late Pleistocene environments of the western Noatak basin, northwestern 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
Imruk_Lake_core_V65.215-163.121Westgate, 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).Imuruk Lake on the Seward Peninsula, Alaska10 cm thick; fine grained and moderately to poorly sorted; occurs at a depth of 525 to 535 cm in Lake Imuruk V core witin the GIV pollen subzone (Shackleton 1982)UT371Tephra FallCumulateGlass 75.33 0.27 13.17 1.73 0.06 0.27 1.45 3.74 3.68 10271EMP1.73Cl=0.29; H2O=5.72EMP 25 50 23 5.5 0.93 0.73 1.8 3.8 0.69 6 0.8 7.8 3.8 5.9 1183INAA
Imruk_Lake_core_V65.215-163.121Westgate, 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).Imuruk Lake on the Seward Peninsula, Alaska10 cm thick; fine grained and moderately to poorly sorted; occurs at a depth of 525 to 535 cm in Lake Imuruk V core witin the GIV pollen subzone (Shackleton 1982)UT371Tephra FallCumulateGlass 75.2 0.28 12.82 1.79 0.26 1.43 3.57 3.99 1792EMP: SiO2, TiO2, Al2O3, FeOT, MgO, CaO, K2O; INAA: Na2O; 2.331.79Cl=0.29; H2O=5.58EMP 3.6 1100 25 50 23 5.69 0.93 0.8 3.8 0.7 6 0.8 10.3 3.8 7.1 1792INAA
Imruk_Lake_core_V65.215-163.121Westgate, 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).Imuruk Lake on the Seward Peninsula, Alaska10 cm thick; fine grained and moderately to poorly sorted; occurs at a depth of 525 to 535 cm in Lake Imuruk V core witin the GIV pollen subzone (Shackleton 1982)UT371Tephra FallCumulateGlass Cl=0.29; H2O=5.58EMP 4.16 99 989 137 24.9 52.3 5.94 24.1 5.95 0.94 4.92 0.89 5.53 1.37 3.52 0.52 3.79 0.55 34.6 249 7.09 10.77 4.93 5.7 10271ICPMS

SAMPLE LOCATION

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