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SAMPLE INFO : UT1453
Sample ID:UT1453
Station ID:Preece_2000_site_19
Latitude:63.97
Longitude:-139.34
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Tephra in silty sediments interstratified with poorly sorted gravels resting on a terrace (Archibald's Bench). No data on thickness; sample from individual ash pod. Dark-brown, andesitic glass predominates in Archibald tephra, but rare, colourless bubble-wall shards of a more silicic composition are present.

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

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_1963.97-139.34Alloway, B. V.1990-01-01> 1220000 known unit; 1182; This glass-fission-track age is a minimum estimate for Mosquito Gulch tephra because no correction was applied for partial track fading. From Preece and others (2000): Bonanza Creek and Archibald tephra beds occur in the same terrace deposits and likely have ages that are broadly similar to that of Mosquito Gulch tephra.Along Bonanza Creek, Yukon Territory, Canada. Tephra in silty sediments interstratified with poorly sorted gravels resting on a terrace (Archibald's Bench) 37-42 m above Bonanza Creek. This section was destroyed during placer mining operations.Tephra in silty sediments interstratified with poorly sorted gravels resting on a terrace (Archibald's Bench). No data on thickness; sample from individual ash pod. Dark-brown, andesitic glass predominates in Archibald tephra, but rare, colourless bubble-wall shards of a more silicic composition are present.UT1453Tephra FallCumulateGlass 58.38 1.42 16.47 8.6 0.13 3.09 6.25 4.06 1.56 990EMP8.6Cl=0.04; H2O=1.1EMP 0.7 30 546 18.18 41.5 18.3 4.72 1.55 0.72 2.88 0.39 3.57 0.5 3.29 1.08 16.03 81 990INAA

SAMPLE LOCATION

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