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Sample ID:94SJP42B
Station ID:94SJP42B
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
Approximately 15 thick flow overlying scoria at Site 6. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque and plagioclase. There are blocky shaped xenoliths, 0.75 mm and 0.9 mm in diameter, consisting of light brown glass, feldspar and microlites. Plagioclase phenocrysts (An42 - An58) have two populations, 0.65-0.1 mm that are sieve textured, zoned, and have overgrowth rims, and 0.25-0.05 mm, some with normal zoning. Olivine phenocrysts are 1.6-0.1 mm and a few have skeletal habits; a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.65 mm, but most are < 0.2 mm.

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

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
94SJP42B62.43407107-143.1810236Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S3494SJP42BLavaWhole-rock 57.35 0.82 16.54 6.35 0.11 6.45 7.26 3.5 1.19 0.27 99.7155DCP6.996.35LOI=0.11DCP 20.8 480 661 18 110 4.2 1.6 2.3 20.2 177 202 151 77 67 17.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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