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SAMPLE INFO : 73ARh36
Sample ID:73ARh36
Station ID:73ARh36
Latitude:62.1454
Longitude:-144.65268
Datum:NAD83
Date Sampled:1973-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Text Description:
Two-pyroxene andesite and minor two-pyroxene dacite flows erupted from central vent and possibly from local satellitic vents especially along east, southeast, and south flanks of Mount Drum. Flows are 1 to about 20 m thick, have oxidized scoriaceous tops and bottoms, and are locally highly vesicular. Rocks are dark gray to medium brownish gray and are not conspicuously porphyritic. They contain small (1 mm) phenocrysts of plagioclase, hypersthene, augite, olivine, and locally hornblended in variable amounts in an intergranular to intersertal groundmass of feldspar, mafic minerals, and locally minor glass.

References:
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

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
73ARh3662.1454-144.65268Richter, D. H.1973-00-00 DrumWrangell Lava, Mount Drum, AlaskaTwo-pyroxene andesite and minor two-pyroxene dacite flows erupted from central vent and possibly from local satellitic vents especially along east, southeast, and south flanks of Mount Drum. Flows are 1 to about 20 m thick, have oxidized scoriaceous tops and bottoms, and are locally highly vesicular. Rocks are dark gray to medium brownish gray and are not conspicuously porphyritic. They contain small (1 mm) phenocrysts of plagioclase, hypersthene, augite, olivine, and locally hornblended in variable amounts in an intergranular to intersertal groundmass of feldspar, mafic minerals, and locally minor glass.73ARh36LavaWhole-rock 60.51 0.68 16.9 5.19 0.09 4.22 5.83 4.04 1.5 0.26 99.9255DCP5.735.19LOI=0.77DCP 580 588 15 123 15 137 113 63 54 63 55DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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