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SAMPLE INFO : UT11
Sample ID:UT11
Station ID:UT11
Latitude:63.943
Longitude:-138.87
Datum:NAD83
Sample Type 1:Tephra Fall
Field Lithology:Rhyolite
Text Description:
Maximum thickness of 2 cm; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. From Preece et al. (2000): Tephra bed located about 1 m below the top of muck in valley bottom setting. From Preece et al. (2011): 2 cm thick; bubble-wall shards, trace amounts of brown glass; in muck; ~1 m below the top of unit; field name MWM2

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
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
UT1163.943-138.87Milner, M. W.1975-01-01 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--Hunker Creek, Yukon Territory, Canada. Coordinates from Preece et al. (2011). Datum not specified, assumed to be NAD83. From Preece et al. (2000): section destroyed during placer mining.Maximum thickness of 2 cm; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. From Preece et al. (2000): Tephra bed located about 1 m below the top of muck in valley bottom setting. From Preece et al. (2011): 2 cm thick; bubble-wall shards, trace amounts of brown glass; in muck; ~1 m below the top of unit; field name MWM2UT11Tephra FallCumulateGlass 74.37 0.28 13.59 2.12 0.05 0.21 1.26 4.34 3.63 940EMP2.12H2O=0.89; Cl=0.17EMP 5.54 108 937 22.7 54.6 26.8 6.84 0.93 1.13 5.5 0.88 8.69 0.67 10.04 3.54 9.35 71 940INAA

SAMPLE LOCATION

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