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Sample ID:93SJP31
Station ID:93SJP31
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Approximately 3 thick dike, trending N65E, that forms a wall-like outcrop on the top of Site 2. This dike cross-cuts dike 93SJP32 and intrudes silicic material of Dome A. Fine-grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and red alteration patches. Plagioclase phenocrysts (An33 - An60) are up to 3.4 mm and have sieve textured cores, rare resorption embayments, complex zoning with prussian blue extinction, melt inclusions, and a few have orthopyroxene inclusions. Orthopyroxene phenocrysts are 0.9-0.15 mm and some have clinopyroxene rims and large melt inclusions. Clinopyroxene phenocrysts are up to 0.8 mm and some are twinned.

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
93SJP3162.43018181-143.0940806Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T8N, R12E, S3693SJP31LavaWhole-rock 57.9 1.13 17.23 6.4 0.13 3.8 6.7 4.11 1.42 0.27 100.3155DCP7.086.4LOI=0.9DCP 22.2 454 493 24 158 5.9 2.2 1.7 19.2 167 47 32 42 73 18.6 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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