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Sample ID:94SJP74A
Station ID:94SJP74A
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Approximately 10 thick, sheety dike, trending N135E and cutting through 94SJP74B. The dike appears to continue to the top of South Pass. Fine grained, vesicular, hypocrystalline, intergranular, glomeroporphyritic with a matrix of pale brown glass, opaque, orthopyroxene and plagioclase. Plagioclase phenocrysts (An40 - An61) are up to 1.75 mm; the smaller grains are laths with normal zoning; the larger grains have complex oscillatory zoning, resorption embayments and sieve textured zones. Orthopyroxene phenocrysts are up to 1.5 mm and some have clinopyroxene rims, occasional sieve textured zones and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.9 mm. Olivine phenocrysts are up to 0.65 and are altered. Opaque phenocrysts are up to 0.1 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
94SJP74A62.27183221-143.3193496Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T6N, R11E, S2694SJP74ALavaWhole-rock 57.3 1.06 17.83 5.9 0.1 4.68 7.43 3.83 1.38 0.22 99.7155DCP6.55.9LOI=0.35DCP 18.9 388 685 17 133 6.1 2 2.2 18.6 147 98 56 62 58 18.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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