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SAMPLE INFO : 93SJP57
Sample ID:93SJP57
Station ID:93SJP57
Latitude:62.41073613
Longitude:-143.1590781
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Scoria
Field Lithology:Andesite
Text Description:
Scoria from the spatter ridge at Site 4. Fine-grained, vesicular, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, plagioclase, opaque and alteration in vesicles. Plagioclase phenocrysts (An44 - An53) have two populations: most are 0.25-0.05 mm and a few are zoned; less common are grains 0.6-0.4 mm with sieve textured zones. Olivine phenocrysts are up to 0.9 mm and a few have skeletal habits, and some have opaque inclusions and/or overgrowth rims. Clinopyroxene phenocrysts are up to 0.35 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
93SJP5762.41073613-143.1590781Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T7N, R12E, S3Scoria from the spatter ridge at Site 4. Fine-grained, vesicular, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, plagioclase, opaque and alteration in vesicles. Plagioclase phenocrysts (An44 - An53) have two populations: most are 0.25-0.05 mm and a few are zoned; less common are grains 0.6-0.4 mm with sieve textured zones. Olivine phenocrysts are up to 0.9 mm and a few have skeletal habits, and some have opaque inclusions and/or overgrowth rims. Clinopyroxene phenocrysts are up to 0.35 mm.93SJP57Tephra FallCumulateWhole-rock 57.39 0.83 16.53 6.35 0.12 6.39 7.08 3.59 1.22 0.21 100.4455DCP7.036.35LOI=0.31DCP 21.4 497 655 17 112 4.8 2.5 1.1 20.3 181 206 141 63 71 17.2 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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