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SAMPLE INFO : UA582
Sample ID:UA582
Station ID:UA582
Latitude:63.683
Longitude:-138.7
Datum:NAD83
Sample Type 1:Tephra Fall
Field Lithology:Rhyolite
 Text Description:
30-cm-thick-tephra; consists of thin, bubble-wall shards, trace amounts of brown glass. In silt. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon.

References:
Dawson Tephra: a prominent stratigraphic marker of late Wisconsinan age in west-central Yukon, Canada
Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada
Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and 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
Trace-element analysis of volcanic glass shards by laser ablation inductively coupled plasma mass spectrometry: application to tephrochronological studies

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
UA58263.683-138.7Hughes, O. L. 25355 ± 136 known unit; 10281; Age is approximate. Weighted mean of two samples of graminoid leaves from in situ surface below tephra (original dates reported in Froese and others 2006; weighted mean reported in Preece and others 2011).-24050--Lower end of Sulphur Creek, Yukon Territory, Canada. Coordinates from Preece et al. (2011). Datum not specified, assumed to be NAD83.30-cm-thick-tephra; consists of thin, bubble-wall shards, trace amounts of brown glass. In silt. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon.UA582Tephra FallCumulateGlass 74.57 0.26 13.59 1.97 0.05 0.18 1.22 4.26 3.72 940EMP1.97H2O=1.78; Cl=0.16EMP 4.39 92 867 83 20 45 6.2 25 6.5 1.02 7.05 1.15 7.38 1.74 5 0.86 5.36 0.89 42 341 8.5 9.4 0.66 20 8.4 4.1 14 10621ICPMS

SAMPLE LOCATION

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