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SAMPLE INFO : 73ARh29
Sample ID:73ARh29
Station ID:73ARh29
Latitude:62.0961
Longitude:-144.72808
Datum:NAD83
Date Sampled:1973-00-00
Sample Type 1:Other
Text Description:
Undifferentiated plugs and small intrusive bodies - Chiefly dacite in composition and probably related to second-cycle activity, but many outcrops high on Mount Drum were not visited. Dacitic rocks are light to medium gray with plagioclase, hornblende, and minor biotite and hypersthene phenocrysts in a felty to trachytic groundmass. One intrusive rhyodacite (sec. 29, T4N, R4E) is light buff gray and contains plagioclase and rare hornblende phenocrysts in a feldspar-rich pilotaxitic groundmass.

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
73ARh2962.0961-144.72808Richter, D. H.1973-00-00 DrumWrangell Lava, Mount Drum, AlaskaUndifferentiated plugs and small intrusive bodies - Chiefly dacite in composition and probably related to second-cycle activity, but many outcrops high on Mount Drum were not visited. Dacitic rocks are light to medium gray with plagioclase, hornblende, and minor biotite and hypersthene phenocrysts in a felty to trachytic groundmass. One intrusive rhyodacite (sec. 29, T4N, R4E) is light buff gray and contains plagioclase and rare hornblende phenocrysts in a feldspar-rich pilotaxitic groundmass.73ARh29OtherQuenched InclusionWhole-rock 68.03 0.38 16.88 2.58 0.05 0.85 3.54 5.05 1.66 0.15 98.8155DCP2.822.58LOI=0.8DCP 603 557 14 205 3.4 13bdl 3 3 60 55DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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