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SAMPLE INFO : 94SJP86
Sample ID:94SJP86
Station ID:94SJP86
Latitude:62.42
Longitude:-143.1354681
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
Flow on the east side of the knife edge between Sites 3 and 4 . Fine-grained, holocrystalline, weakly intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and green alteration. Plagioclase phenocrysts (An28 - An56) are up to 1.3 mm and some have sieve textured cores or intermediate zones; often have rounded, resorbed rims, or tooth-like overgrowth rims; complex zoning is common, occasionally there is convolute zoning. Disequilibrium features are less common in plagioclase phenocrysts less than 0.2 mm. Orthopyroxene phenocrysts are up to 1.0 mm, some have clinopyroxene rims and a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.5 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
94SJP8662.42-143.1354681Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R12E, S2Flow on the east side of the knife edge between Sites 3 and 4 . Fine-grained, holocrystalline, weakly intergranular, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and green alteration. Plagioclase phenocrysts (An28 - An56) are up to 1.3 mm and some have sieve textured cores or intermediate zones; often have rounded, resorbed rims, or tooth-like overgrowth rims; complex zoning is common, occasionally there is convolute zoning. Disequilibrium features are less common in plagioclase phenocrysts less than 0.2 mm. Orthopyroxene phenocrysts are up to 1.0 mm, some have clinopyroxene rims and a few have opaque inclusions. Clinopyroxene phenocrysts are up to 0.5 mm.94SJP86LavaWhole-rock 57.99 0.87 17.32 5.84 0.11 4.94 7.17 3.78 1.09 0.17 99.5755DCP6.425.84LOI=0.72DCP 20.4 541 539 18 132 4.9 3.3 1 18.8 155 85 74 41 60 17 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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