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SAMPLE INFO : Preece_2011_Ophir_Creek_Tephra_average
Sample ID:Preece_2011_Ophir_Creek_Tephra_average
Station ID:Klondike_District_Regional_Tephra
Sample Type 1:Tephra Fall
Field Lithology:Rhyolite
Text Description:
The composition reported here is the average of analyses of 4 samples of Ophir Creek tephra: UT1465, UT1587, UT2211, UT2213

A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory

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
Klondike_District_Regional_Tephra63.9-139.19998Preece, S. J. Tephra preserved in the late Cenozoic deposits of the Klondike region, Yukon Territory. Preece et al. (2000) identify 12 regional beds from 41 individual tephra samples; Sandhu et al. (2001) and Westgate et al. (2001) provide additional data on tephra bed average glass compositions from the area. Preece et al. (2011) provide information and data on 50 distinctive tephra beds in the area. Glass geochemical data of samples here are averages calculated from analyses of multiple tephra correlated across different stratigraphic locations in the Klondike area. Individual sample IDs are noted in the sample descriptions. Note that tephra units only located in one stratigraphic section are not included here and are listed by individual sample ID (see Preece et al. 2000, footnotes of tables 2 and 3; Sandhu et al. 2001, footnote of table 1; Westgate et al. 2001 footnote of table 2; Preece et al. 2011, Tables 1 and 4).The composition reported here is the average of analyses of 4 samples of Ophir Creek tephra: UT1465, UT1587, UT2211, UT2213Preece_2011_Ophir_Creek_Tephra_averageTephra FallCumulateGlass 76.03 0.2 13.83 1.14 0.05 0.33 1.6 3.79 3 10021EMP1.14Cl=0.05; H2O=5.14EMP 1.37 64.7 920 348 17.1 31.8 2.95 10.7 1.6 0.57 1.6 0.2 1.03 0.22 0.6 0.1 0.62 0.1 6.9 108 4.79 3.21 0.5 5.53 1.86 10021ICP


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