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SAMPLE INFO : 93SJP23
Sample ID:93SJP23
Station ID:93SJP23
Latitude:62.47740701
Longitude:-143.0743622
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Text Description:
From a 20-25' thick flow at the top of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass, mesostasis, opaque (sometimes with dendritic habit), and plagioclase microlites. Plagioclase phenocrysts (An38-An61) are up to 2.63 mm, frequently have normal zoning, and occasionally have sieve or spongy textured zones, or olivine inclusions. Olivine phenocrysts are up to 2.0 mm, and smaller grains tend to occur in clots; occasionally have opaque inclusions. Clinopyroxene phenocrysts are up to 0.65 mm. Opaque phenocrysts are up to 0.1 mm, but most opaque grains are of matrix size. Mode: 27% matrix, 48.7% plagioclase, 9.1% olivine, 10.5% clinopyroxene, 4.7% vesicles.

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
93SJP2362.47740701-143.0743622Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R13E, S18From a 20-25' thick flow at the top of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of brown glass, mesostasis, opaque (sometimes with dendritic habit), and plagioclase microlites. Plagioclase phenocrysts (An38-An61) are up to 2.63 mm, frequently have normal zoning, and occasionally have sieve or spongy textured zones, or olivine inclusions. Olivine phenocrysts are up to 2.0 mm, and smaller grains tend to occur in clots; occasionally have opaque inclusions. Clinopyroxene phenocrysts are up to 0.65 mm. Opaque phenocrysts are up to 0.1 mm, but most opaque grains are of matrix size. Mode: 27% matrix, 48.7% plagioclase, 9.1% olivine, 10.5% clinopyroxene, 4.7% vesicles.93SJP23LavaWhole-rock 54.56 1.16 17.39 6.81 0.12 6.25 8.53 3.6 1.06 0.26 99.7855DCP7.496.81LOI=0.2DCP 17.1 339 547 11.9 27.1 14.4 3.4 1.2 3.5 3.3 1.8 1.7 0.3 21 137 4.9 2.6 1.2 23.3 169 172 86 55 62 17 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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