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SAMPLE INFO : UT1001
Sample ID:UT1001
Station ID:Preece_2000_site_15
Latitude:63.816
Longitude:-139.058
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Maximum thickness of 2 cm. Tephra has been preserved in an ice-wedge cast (from Sandhu et al. 2001). Sample is from top of White Channel gravels (from Preece et al. 2000). From Preece et al. (2011): pumice with trace amount of blocky grains. Sample taken by M. Milner, 1988.

References:
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
The application of ICP-MS methods to tephrochronological problems
Glass-fission-track ages of late Cenozoic distal tephra beds in the Klondike district, Yukon Territory

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
Preece_2000_site_1563.816-139.058Preece, S. J. 800000 ± 40000 known unit; 10261; Age is approximate. Based on only 4 spontaneous tracks and is certainly too young in the light of the ages of other tephra beds in the Klondike area and the stratigraphic and geomorphic setting of Quartz Creek tephra (from Preece and others 2000).2 m of massive fluvial gravel that is separated by a bedrock high from the more extensive, and slightly lower, colluviated facies of the Upper White Channel gravel. Located 35 km southeast of Dawson City near the confluence of the Little Blanche and Quartz creeks, Yukon Territory, Canada. Sequence containing gravel, crossbedded sands and silts. Datum not specified, assumed to be NAD83.Maximum thickness of 2 cm. Tephra has been preserved in an ice-wedge cast (from Sandhu et al. 2001). Sample is from top of White Channel gravels (from Preece et al. 2000). From Preece et al. (2011): pumice with trace amount of blocky grains. Sample taken by M. Milner, 1988.UT1001Tephra FallCumulateGlass 0.17 10301ICPMS 1.71 71.1 841 302 18.8 36.5 3.4 12.7 1.91 0.51 1.87 0.23 1.22 0.27 0.78 0.13 0.77 0.13 8.48 89.3 4.25 2.76 0.42 10.1 6.95 2.57 2.07 15.1 3.49 1.88 5.66 17.6 10301ICPMS

SAMPLE LOCATION

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