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SAMPLE INFO : UT1813
Sample ID:UT1813
Station ID:Thistle_Creek
Latitude:63.06
Longitude:-139.32
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Within frozen organic-rich silt near the top of a ~20 m, poorly exposed, placer mining cut. Tephra bed is reworked and 1.5 to 8 cm thick. Occurs significantly higher in section than where Old Crow tephra appears in a section ~30 m downstream.

References:
The variegated (VT) tephra: A new regional marker for middle to late marine isotope stage 5 across Yukon and Alaska
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, 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
Thistle_Creek63.06-139.32Westgate, J. A. 106000 ± 10000 TL; 7423; Age is approximate. Average age of two infrared stimulated luminescence ages on loess bracketing VT tephra at Halfway House.The Thistle Creek section is about 100 km south of Dawson City, Yukon Territory, Canada, in the south Klondike goldfields. It consists of a 10 m thick organic-rich silt sequence over gravel on a terrace 25 m above Thistle Creek on the south side of the valley. Coordinates from Westgate and others (2009); datum not provided, assumed to be NAD83. Coordinates for this site in Preece and others (2011), Jensen and others (2011), and Reyes and others (2010) vary slightly. Also known as Eddas Bench.Within frozen organic-rich silt near the top of a ~20 m, poorly exposed, placer mining cut. Tephra bed is reworked and 1.5 to 8 cm thick. Occurs significantly higher in section than where Old Crow tephra appears in a section ~30 m downstream. UT1813Tephra FallCumulateGlass 70.15 0.6 14.82 3.35 0.09 0.72 2.6 4.66 2.86 7423EMP3.35Cl=0.16; H2O=3.21EMP

SAMPLE LOCATION

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