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SAMPLE INFO : 94SJP40A
Sample ID:94SJP40A
Station ID:94SJP40A
Latitude:62.43657124
Longitude:-143.1951901
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Scoria
Field Lithology:Andesite
Text Description:
Scoria from Site 6. Fine-grained, vesicular, intersertal, hypocrystalline, porphyritic with a matrix is very dark glass. Plagioclase phenocrysts (An39 - An61) have two populations: 3.05-0.4 mm, with sieve textured zones; and 1.6-0.05 mm with complex zoning and lacking sieve textured zones. Olivine phenocrysts are 1.05-0.1 mm and some have skeletal habits or opaque inclusions. Clinopyroxene phenocrysts are up to 0.8 and twinning is common. 61.5% matrix, 4.9% plagioclase, 0.4% olivine, 0.7% clinopyroxene, 32.5% 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
94SJP40A62.43657124-143.1951901Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S33Scoria from Site 6. Fine-grained, vesicular, intersertal, hypocrystalline, porphyritic with a matrix is very dark glass. Plagioclase phenocrysts (An39 - An61) have two populations: 3.05-0.4 mm, with sieve textured zones; and 1.6-0.05 mm with complex zoning and lacking sieve textured zones. Olivine phenocrysts are 1.05-0.1 mm and some have skeletal habits or opaque inclusions. Clinopyroxene phenocrysts are up to 0.8 and twinning is common. 61.5% matrix, 4.9% plagioclase, 0.4% olivine, 0.7% clinopyroxene, 32.5% vesicles.94SJP40ATephra FallCumulateWhole-rock 58.31 1.58 16.27 7.54 0.13 3.38 6.73 4.16 1.7 0.4 99.5955DCP8.287.54LOI=-0.21DCP 32 560 472 25.2 59.1 27.8 5.7 1.7 6.9 5.2 3 2.8 0.4 34 252 9.7 5.1 2.7 23.1 230 29 28 91 85 19.3 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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