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SAMPLE INFO : 93SJP25
Sample ID:93SJP25
Station ID:93SJP25
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:
Approximately 15' thick flow from near the base of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, diktytaxitic, holocrystalline, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, and minor alteration around vesicles. Plagioclase phenocrysts (An27-An56) are up to 1.1 mm, and have occasional sieve textured zones, commonly display normal zoning with occasionally oscillatory zoning. Olivine phenocrysts are up to 0.8 mm with occasionally opaque inclusions, and some alteration. Orthopyroxene phenocrysts are up to 0.5 mm and some have clinopyroxene rims and occasionally opaque inclusions. Clinopyroxene phenocrysts are up to 0.1 mm.

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
93SJP2562.47740701-143.0743622Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R13E, S18Approximately 15' thick flow from near the base of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, diktytaxitic, holocrystalline, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, and minor alteration around vesicles. Plagioclase phenocrysts (An27-An56) are up to 1.1 mm, and have occasional sieve textured zones, commonly display normal zoning with occasionally oscillatory zoning. Olivine phenocrysts are up to 0.8 mm with occasionally opaque inclusions, and some alteration. Orthopyroxene phenocrysts are up to 0.5 mm and some have clinopyroxene rims and occasionally opaque inclusions. Clinopyroxene phenocrysts are up to 0.1 mm.93SJP25LavaWhole-rock 55.5 1.1 17.86 6.65 0.12 5.27 7.93 3.84 1.15 0.2 100.1155DCP7.356.65LOI=0.32DCP 20.9 416 549 20 131 5.1 1.5 2.2 21.5 165 101 59 40 65 17.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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