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SAMPLE INFO : 73-Arh-105
Sample ID:73-Arh-105
Station ID:73-Arh-105
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Rhyolite
Sample Unit:Qcr
Text Description:
Pleistocene rhyolite dikes and laccoliths; sample is K-Ar dated to 1.09 +/- 0.17 m.y.

Geologic map of the Gulkana B-1 quadrangle, south-central Alaska

StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2geologic unitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
73-Arh-105 62.4005 -144.0303 Richter, D. H. 1090000 ± 170000 K-Ar; 584; Capital Gulkana B-1 quadrangle; lat long points derived from paper map Pleistocene rhyolite dikes and laccoliths; sample is K-Ar dated to 1.09 +/- 0.17 m.y. 73-Arh-105 Lava Qcr Whole Rock 70.9 0.36 16 1.7 0.1 0.52 1.5 4.5 3.6 0.08 99.8584NN0.81H2OP=0.53; H2OM=0.11; CO2=0.05NN


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