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SAMPLE INFO : 90ADg-3
Sample ID:90ADg-3
Station ID:90ADg-3
Latitude:61.4055
Longitude:-141.6965
Datum:NAD83
Date Sampled:1990-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Dacite
Text Description:
Summit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991).

References:
Mount Churchill, Alaska: source of the late Holocene White River Ash

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final 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
90ADg-361.4055-141.6965McGimsey, R. G.1990-00-00 119000 ± 17000 K-Ar; 187; plagioclase K-ArChurchill, MtSummit area of Mount ChurchillSummit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991). 90ADg-3LavaWhole-rock 65.7 0.58 16.6 0.27 0.05 1.7 4.84 4.41 2.1 0.22 98.841474XRF3.40.27H2OP=0.02; H2OM=0.03; CO2=0.02RAPIDA 39 812 951 17.6 38.9 16.2 3.3 1 3.1 2.6 1.6 1.4 0.2 12 139 6.2 7.1 1.9 6.1 54bdl 7 43 57 18.9 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn;
90ADg-361.4055-141.6965McGimsey, R. G.1990-00-00 119000 ± 17000 K-Ar; 187; plagioclase K-ArChurchill, MtSummit area of Mount ChurchillSummit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991). 90ADg-3LavaWhole-rock 65.5 0.6 16.6 3.29 0.06 1.76 5.04 4.53 2.07 0.46 99.9755DCP3.653.29LOI=0.13DCP 48 760 91028 < 30 74 10 1565 < 10 17 < 20 9 < 10 34 44 187NN
90ADg-361.4055-141.6965McGimsey, R. G.1990-00-00 119000 ± 17000 K-Ar; 187; plagioclase K-ArChurchill, MtSummit area of Mount ChurchillSummit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991). 90ADg-3LavaWhole-rock 65.9 0.58 16.7 3.33 0.05 1.7 4.86 4.43 2.1 0.22 98.76187NN3.340.27H2OP=0.02; H2OM=0.03; CO2=0.02RAPIDA

SAMPLE LOCATION

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