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Sample ID:J184
Station ID:Jan_Lake
Sample Type 1:Tephra Fall
Text Description:
Cryptotephra that covers a wide range of glass geochemical compositions suggesting no primary air fall tephra was present.

Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA

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
Jan_Lake63.574444-143.917222Unknown, Unknown0000-00-00 Jane Lake, in eastern interior Alaska, lies c. 3 km west and 50 m above the current active floodplain of the Tanana River Valley, about 130 km west of the Canadian border (see Carlson and Finney, 2004). Downwind of volcanic sources in the Aleutian arc and Peninsula. Coordinates provided as degrees/minutes/seconds and converted to decimal degrees. Datum not specified, assumed to be NAD83.Cryptotephra that covers a wide range of glass geochemical compositions suggesting no primary air fall tephra was present. J184Tephra FallCumulateGlass 72.13 0.72 14.07 2.46 0.06 0.52 2.05 4.03 3.71 0.17 10013071EMP2.46Cl=0.08; H2O=2.95EMP


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