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SAMPLE INFO : Jensen_Palisades-5_average
Sample ID:Jensen_Palisades-5_average
Station ID:Jensen_Palisades_East
Latitude:65.1
Longitude:-153.19997
Datum:NAD83
Sample Type 1:Tephra Fall
Field Lithology:Rhyolite
Text Description:
The composition reported here is the average of analyses of two samples: UA2084 and UA2164. Two samples collected ~75 cm above river level at Site F, in the river level peat complex. Samples UA 2084 and 2164 contain glass geochemical populations of several of the lowest tephra beds, but none of these lowest beds contain shards of P5. Glass morphology is almost entirely tricuspateand bubble-walled shards with some thick-walled pumice.

References:
The Palisades is a key reference site for the middle Pleistocene of eastern Beringia: new evidence from paleomagnetics and regional tephrostratigraphy

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
Jensen_Palisades_East65.1-153.19997Jensen, B. J. L. The Palisades are on the south bank of the Yukon River in Nowitna National Wildlife Refuge, ~70 km downstream of Tanana village. Palisades East forms a heavily gullied, cliff-like exposure that is generally ~40-45 m in height, but ranges from ~25 m high at Site E to ~55-60 m high at Site D. It is difficult to access safely, with many near-vertical exposures and overhanging blocks of frozen sediment that frequently break free into the Yukon River. Location imprecisely georeferenced from Figure 1 in Jensen et al. (2013). Multiple sections were mapped and sampled across Palisades East: Site B1, B2, IB4, F, D1, and D2. See Jensen et al. (2013).The composition reported here is the average of analyses of two samples: UA2084 and UA2164. Two samples collected ~75 cm above river level at Site F, in the river level peat complex. Samples UA 2084 and 2164 contain glass geochemical populations of several of the lowest tephra beds, but none of these lowest beds contain shards of P5. Glass morphology is almost entirely tricuspateand bubble-walled shards with some thick-walled pumice.Jensen_Palisades-5_averageTephra FallCumulateGlass 74.48 0.39 13.6 2.03 0.08 0.35 1.47 4.69 2.76 9361EMP2.03Cl=0.16; H2O=5.8EMP

SAMPLE LOCATION

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