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SAMPLE INFO : 93SJP47
Sample ID:93SJP47
Station ID:93SJP47
Latitude:62.47990715
Longitude:-143.0707513
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Text Description:
Third flow from the bottom of the lower andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline intergranular, intersertal, seriate to glomeroporphyritic with a matrix of brown glass, mesostasis, opaques, plagioclase, clinopyroxene and alteration. Plagioclase phenocrysts (An41-An58) are up to 2.03 mm, and commonly have sieve textured cores with overgrowth rims, normal zoning; occasionally have oscillatory zoning. Olivine phenocrysts are up to 0.75 mm, may be partially or completely altered, and tend to have corroded rims. Clinopyroxene phenocrysts are up to 1.75 mm. Orthopyroxene phenocrysts are up to 0.85 mm and some have clinopyroxene rims.

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

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
93SJP4762.47990715-143.0707513Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R13E, S18Third flow from the bottom of the lower andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline intergranular, intersertal, seriate to glomeroporphyritic with a matrix of brown glass, mesostasis, opaques, plagioclase, clinopyroxene and alteration. Plagioclase phenocrysts (An41-An58) are up to 2.03 mm, and commonly have sieve textured cores with overgrowth rims, normal zoning; occasionally have oscillatory zoning. Olivine phenocrysts are up to 0.75 mm, may be partially or completely altered, and tend to have corroded rims. Clinopyroxene phenocrysts are up to 1.75 mm. Orthopyroxene phenocrysts are up to 0.85 mm and some have clinopyroxene rims.93SJP47LavaWhole-rock 56.22 0.94 17.1 6.38 0.13 4.72 8.65 3.4 1.34 0.11 98.7555DCP6.966.38LOI=0.99DCP 23.1 453 642 19 115 3.7 3.6 1.2 22.9 181 126 74 97 64 18 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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