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SAMPLE INFO : UT19
Sample ID:UT19
Station ID:UT19
Latitude:63.9686
Longitude:-139.3467
Datum:NAD83
Date Sampled:1975-01-01
Sample Type 1:Tephra Fall
 Text Description:
2-cm-thick discontinuous bed with alluvium on an intermediate terrace of Bonanza Creek; consists mostly of bubble-wall glass shards with feldspar, orthopyroxene, clinopyroxene and minor amounts of green or red amphibole, titanomagnetite, ilmenite, apatite and zircon(from Sandhu et al. 2001). In 1 m thick silty clay overbank sediments overlying 1 m thick gravel resting on a well developed strath terrace (Archibald's Bench). Field name MWM9

References:
Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada
Fission-track ages of late Cenozoic distal tephra beds in the Yukon Territory and Alaska
A contribution to the Pleistocene geochronology of Alaska and the Yukon Territory: fission-track age of distal tephra units
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory
Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon by tephrochronology
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
UT1963.9686-139.3467Milner, M. W.1975-01-01> 1420000 ± 160000 known unit; 10321; Weighted mean of three separate ages obtained on sample UT19; Sandhu and others (2001).Along Bonanza Creek, Yukon Territory, Canada. Site 18 of Preece et al. (2000). 1 m thick silty clay overbank sediments overlying 1 m thick gravel resting on a well developed strath terrace (Archibald's Bench) at 37–42 m above Bonanza Creek, on the right bank, about 8 km upstream from the confluence with the Klondike River. Overbank sediments are overlain by 10 m of gravel. Section was destroyed during placer mining operations.2-cm-thick discontinuous bed with alluvium on an intermediate terrace of Bonanza Creek; consists mostly of bubble-wall glass shards with feldspar, orthopyroxene, clinopyroxene and minor amounts of green or red amphibole, titanomagnetite, ilmenite, apatite and zircon(from Sandhu et al. 2001). In 1 m thick silty clay overbank sediments overlying 1 m thick gravel resting on a well developed strath terrace (Archibald's Bench). Field name MWM9UT19Tephra FallCumulateGlass 75.55 0.28 13.36 1.8 0.08 0.26 1.41 5.15 1.91 10311EMP1.8Cl=0.2; H2O=4.8EMP 1.61 30 562 14.38 36.9 25.6 5.39 1.08 0.99 5 0.79 5.2 0.34 3.17 1.04 10.15 80 990INAA
UT1963.9686-139.3467Milner, M. W.1975-01-01> 1420000 ± 160000 known unit; 10321; Weighted mean of three separate ages obtained on sample UT19; Sandhu and others (2001).Along Bonanza Creek, Yukon Territory, Canada. Site 18 of Preece et al. (2000). 1 m thick silty clay overbank sediments overlying 1 m thick gravel resting on a well developed strath terrace (Archibald's Bench) at 37–42 m above Bonanza Creek, on the right bank, about 8 km upstream from the confluence with the Klondike River. Overbank sediments are overlain by 10 m of gravel. Section was destroyed during placer mining operations.2-cm-thick discontinuous bed with alluvium on an intermediate terrace of Bonanza Creek; consists mostly of bubble-wall glass shards with feldspar, orthopyroxene, clinopyroxene and minor amounts of green or red amphibole, titanomagnetite, ilmenite, apatite and zircon(from Sandhu et al. 2001). In 1 m thick silty clay overbank sediments overlying 1 m thick gravel resting on a well developed strath terrace (Archibald's Bench). Field name MWM9UT19Tephra FallCumulateGlass 75.63 0.31 13.27 1.83 0.08 0.26 1.34 5.24 1.87 990EMP1.83Cl=0.17; H2O=4.97EMP 1.53 35 595 77 14.69 29 4.51 19.2 5.12 1.22 5.43 1.03 6.24 1.34 4.11 0.71 4.65 0.57 37 199 4.3 5.39 0.26 2.9 1.57 10321ICPMS

SAMPLE LOCATION

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