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SAMPLE INFO : K-2570
Sample ID:K-2570
Station ID:K-2570
Latitude:58.288
Longitude:-154.672
Datum:NAD83
Sample Type 1:Lava
Sample Type 2:Flow
Text Description:
Sample in thin section is 20-25% plagioclase, to 3 mm; 10% subequal amounts of clinopyroxene and orthopyroxene, to 2 mm; 1% oxides to 0.2 mm; 2% olivine to 1.5 mm; sieved plagioclase present in a few grains; oxide-pyroxene-plagioclase aggregates present. SW Snowy volcano. 4000-ft rim of ice-mantled lava flow, 5.2 km SE of Peak 6770. Sample has a whole-rock K-Ar calculated age of 92 +/- 10 ka (Hildreth and others, 2001).

References:
Snowy Mountain: A pair of small andesite-dacite stratovolcanoes in Katmai National Park

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
K-257058.288-154.672Unknown, Unknown 92000 ± 10000 K-Ar; 889; whole-rock K-ArSnowySouthwest cone of Snowy Mountain, lat/long from figure 2. SW Snowy volcano. 4000-ft rim of ice-mantled lava flow, 5.2 km SE of Peak 6770. Sample in thin section is 20-25% plagioclase, to 3 mm; 10% subequal amounts of clinopyroxene and orthopyroxene, to 2 mm; 1% oxides to 0.2 mm; 2% olivine to 1.5 mm; sieved plagioclase present in a few grains; oxide-pyroxene-plagioclase aggregates present. SW Snowy volcano. 4000-ft rim of ice-mantled lava flow, 5.2 km SE of Peak 6770. Sample has a whole-rock K-Ar calculated age of 92 +/- 10 ka (Hildreth and others, 2001).K-2570Whole Rock 57.9 0.72 16.81 6.59 0.13 4.88 7.82 3.37 1.13 0.21 99.38889XRF6.59LOI=0.49IGN

SAMPLE LOCATION

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Page modified: July 14, 2014 13:37
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