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SAMPLE INFO : RS94
Sample ID:RS94
Station ID:Ruppert_Lake_side
Latitude:67.074444
Longitude:-154.251389
Datum:NAD83
Date Sampled:0000-00-00
Sample Type 1:Tephra Fall
Field Lithology:Rhyolite
Text Description:
Cryptotephra consisting of cuspate and platy shards. Glass chemistry is rhyolitic with low K2O values. Similar stratigraphic position as sample RC108, thought to be same tephra horizon.

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

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
Ruppert_Lake_side67.074444-154.251389Unknown, Unknown0000-00-00 3080 ± 150 14C AMS; 13071; Age is approximate. Two sigma modeled age range for the tephra based on radiocarbon age model of the core.Rupper Lake in southern Brooks Range, Alaska, 3.1 km square. Within 750 m of Woody Bottom Pond. Side Core. Cryptotephra consisting of cuspate and platy shards. Glass chemistry is rhyolitic with low K2O values. Similar stratigraphic position as sample RC108, thought to be same tephra horizon. RS94Tephra FallCumulateGlass 74.24 0.31 13.98 1.98 0.1 0.45 2.41 4.32 2 10013071EMP1.98Cl=0.22; H2O=1.87EMP

SAMPLE LOCATION

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