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SAMPLE INFO : 81-ARh-33
Sample ID:81-ARh-33
Station ID:81-ARh-33
Latitude:62.3745
Longitude:-143.62248
Datum:NAD83
Date Sampled:1981-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Text Description:
Wrangell Lava. Tanada volcano. Shield lavas. Chiefly dark-gray to medium-gray, thin to medium (2-10 m) flows of sparsely porphyritic andesite and basaltic andesite and minor intercalated laharic and pyroclastic deposits. Flows contain phenocrysts of plagioclase (1-2%, 1-5 mm), augite (0-1%, 1-2 mm), and traces of hypersthene, olivine, and opaque minerals in a microfelty to pilotaxitic groundmass. * * * In the adjacent Nabesna B-5 quadrangle (Lowe and others, 1982) the andesite and basaltic andesite flows of their unit QTaf are mostly equivalent to Tanada shield lavas.

References:
Geologic map of the Nabesna B-6 Quadrangle, south-central Alaska

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
81-ARh-3362.3745-143.62248Richter, D. H.1981-00-00 Tanada PeakWrangell Lava; Nabesna B-6 quadrangle. Latitude and longitude derived from paper map.Wrangell Lava. Tanada volcano. Shield lavas. Chiefly dark-gray to medium-gray, thin to medium (2-10 m) flows of sparsely porphyritic andesite and basaltic andesite and minor intercalated laharic and pyroclastic deposits. Flows contain phenocrysts of plagioclase (1-2%, 1-5 mm), augite (0-1%, 1-2 mm), and traces of hypersthene, olivine, and opaque minerals in a microfelty to pilotaxitic groundmass. * * * In the adjacent Nabesna B-5 quadrangle (Lowe and others, 1982) the andesite and basaltic andesite flows of their unit QTaf are mostly equivalent to Tanada shield lavas.81-ARh-33LavaWhole-rock 56.4 1.19 17.6 7.23 0.12 4.27 7.28 3.71 1.59 0.34 100.12321NN2.245.2H2OP=0.2; H2OM=0.08; CO2=0.01RAPIDA

SAMPLE LOCATION

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