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SAMPLE INFO : 93SJP93
Sample ID:93SJP93
Station ID:93SJP93
Latitude:62.41129167
Longitude:-143.0935237
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Basaltic Andesite
Text Description:
Dike intruding into silicic material (93SJP15-18, Dome C) along Fossil Creek. Fine-grained, porphyritic to glomeroporphyritic, altered, holocrystalline with a matrix of alteration, opaque, feldspar, clinopyroxene, and cryptocrystalline material. Plagioclase phenocrysts (An26-An33) have two populations 2.5-0.1 mm displaying sieve textured zones, complex zoning, resorption embayments; and 0.1 - 0.25 mm that are needle-like. Orthopyroxene phenocrysts are 1.25-0.45 mm. Clinopyroxene phenocrysts are 0.7-0.35 mm and some are twinned. Olivine? phenocrysts are completely altered but have an olivine-like habit.

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
93SJP9362.41129167-143.0935237Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T7N, R12E, S1Dike intruding into silicic material (93SJP15-18, Dome C) along Fossil Creek. Fine-grained, porphyritic to glomeroporphyritic, altered, holocrystalline with a matrix of alteration, opaque, feldspar, clinopyroxene, and cryptocrystalline material. Plagioclase phenocrysts (An26-An33) have two populations 2.5-0.1 mm displaying sieve textured zones, complex zoning, resorption embayments; and 0.1 - 0.25 mm that are needle-like. Orthopyroxene phenocrysts are 1.25-0.45 mm. Clinopyroxene phenocrysts are 0.7-0.35 mm and some are twinned. Olivine? phenocrysts are completely altered but have an olivine-like habit.93SJP93LavaWhole-rock 55.79 1.38 17.46 7.1 0.14 4.13 7.48 4.2 1.09 0.33 99.9355DCP7.827.1LOI=0.84DCP 13.7 370 535 25 180 6.8 2.5 1.3 21.4 181 64 36 36 75 18.6 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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