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Sample ID:94SJP81C
Station ID:94SJP81C
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
Platy to locally massive flows adjacent to vent breccia and a dike (94SJP81B). Fine-grained, holocrystalline, pilotaxitic, intergranular, porphyritic with a matrix of plagioclase, opaque, orthopyroxene and calcite. Plagioclase phenocrysts (An 38 - An62) are up to 2 mm and have multiple sieve textured intermediate zones, complex zoning, and a few have resorbed rims. Orthopyroxene phenocrysts are up to 1.75 mm. Clinopyroxene phenocrysts are up to 1 mm. Olivine phenocrysts are up to 0.7 mm, most are ~0.1 mm, and altering to iddingsite with fine-grained pyroxene opaque coronas. Opaque phenocrysts are up to 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
94SJP81C62.3790673-143.087688Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R13E, S1994SJP81CLavaWhole-rock 57.2 0.85 18.24 5.8 0.11 4.28 7.76 3.84 1.2 0.15 99.9955DCP6.455.8LOI=0.56DCP 20.3 403 596 17 102 3.6 2.6 0.9 18.6 151 67 69 18 63 17.3 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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