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.
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
|StationID||Latitude||Longitude||Geologist||DateVisited||Age Info||Volcano||Eruption||Location Description||Text Description||Sample ID||Sample Type 1||Sample Type 2||Final Unit||Material||Coeff||SiO2||TiO2||Al2O3||FeOT||MnO||MgO||CaO||Na2O||K2O||P2O5||Total-majors||REF majors||METH majors||Fe2O3/Fe203T orig||FeO/FeOT orig||Volatiles csv||METH volatiles||Cs||Rb||Ba||Sr||La||Ce||Pr||Nd||Sm||Eu||Gd||Tb||Dy||Ho||Er||Tm||Yb||Lu||Y||Zr||Nb||Hf||Ta||Pb||Th||U||Sc||V||Cr||Fe||Co||Ni||Cu||Zn||Ga||Mo||As||Na||K||Ref trace1||METH trace1||Rb||Ba||Sr||La||Ce||Nd||Sm||Eu||Gd||Dy||Er||Yb||Lu||Y||Zr||Nb||Pb||Th||U||Sc||Ti||V||Cr||Ni||Cu||Zn||Ga||Ref trace2||METH trace2||Light csv||Halogen csv||other major csv||other lile csv||other ree csv||other hfse csv||other hpe csv||other tm csv||other misc csv|
|Preece_2000_site_15||63.816||-139.058||Preece, 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.||UT1001||Tephra Fall||Cumulate||Glass||0.17||10301||ICPMS||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||10301||ICPMS|
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