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SAMPLE INFO : 74Ale-8
Sample ID:74Ale-8
Station ID:74Ale-8
Latitude:62.1521
Longitude:-144.6484
Datum:NAD83
Date Sampled:1974-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Sample Unit:Qzaf
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:
Geologic map of the Gulkana A-2 quadrangle, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoLocation DescriptionText DescriptionSample IDSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
74Ale-8 62.1521 -144.6484 Unknown, Unknown 1974-00-00 DrumWrangell Volcanic Field, Gulkana A-2 quadrangle. Lat and long derived from paper map.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.74Ale-8 57.272391111872 0.86471657928739 16.841863608214 6.5502803732905 0.11060328339722 5.4296157304092 7.058500449532 3.8510052310125 1.0255940824106 0.27148078652046 100.1855DCP7.246.5502803732905LOI=0.72DCP 591 17 201 59 67 55MX 429 115 18.7 141 116 55DCP: Ba, Sc, V; XRF: Zr, Ni; Rb V=20, M=XRF-EDS, R=159;Sr V=565, M=XRF-EDS, R=159;

SAMPLE LOCATION

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