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SAMPLE INFO : UA1874
Sample ID:UA1874
Station ID:Halfway_House
Latitude:64.735
Longitude:-148.4594
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Sample likely collected at ~1.5 m, from a continuous, yellow-white bed up to 0.5 cm thick. Glass morphology consists almost entirely of blocky, thick-walled pumice that have small evenly distributed vesicles and abundant phenocrysts and microlites.

References:
The Palisades is a key reference site for the middle Pleistocene of eastern Beringia: new evidence from paleomagnetics and regional tephrostratigraphy
150,000 years of loess accumulation in central Alaska

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
Halfway_House64.735-148.4594Preece, S. J. Halfway House site: a 12-m-thick section of the Gold Hill Loess located on top of a rounded bedrock hill along the north side of the Parks Highway, ~50 km west of Fairbanks, Alaska. The exposure was created during construction of the George Parks Highway in the 1960s and is mostly comprised of the Goldstream Formation. Location coordinates from Preece and others (2011); coordinates vary slightly from those reported in Jensen and others (2011). Datum not specified, assumed to be NAD83.Sample likely collected at ~1.5 m, from a continuous, yellow-white bed up to 0.5 cm thick. Glass morphology consists almost entirely of blocky, thick-walled pumice that have small evenly distributed vesicles and abundant phenocrysts and microlites.UA1874Tephra FallCumulateGlass 76.15 0.04 14.21 0.6 0.14 0.1 1.04 3.94 3.69 10781EMP0.6Cl=0.1; H2O=7.4EMP

SAMPLE LOCATION

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