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Sample ID:95SJP7
Station ID:95SJP7
Date Sampled:1995-00-00
Sample Type 1:Lava
Field Lithology:Dacite
Text Description:
Rubbly outcrop 50 - 60 thick at the top of Site 8. Visually appears to line up with 93SJP5 across the valley at Site 9. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material and opaque. Plagioclase phenocrysts (An38 - An58) are up to 2.62 mm and frequently have oscillatory zoning and occasionally normal zoning. Orthopyroxene phenocrysts are up to 0.6 mm and often have opaque inclusions, and occasionally have sieve textured zones or resorption embayments. Amphibole phenocrysts are up to 0.45 mm with green-red pleochroism and opaque corona. Opaque phenocrysts are up to 0.35 mm. 84.6% matrix, 13.1% plagioclase, 1.0% orthopyroxene, 1.3% opaque.

Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

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
95SJP762.38156727-143.0310222Preece, S. J.1995-00-00 Skookum CreekNabesna B-5; T7N, R13E, S1795SJP7LavaWhole-rock 65.3 0.68 16.35 4 0.1 1.33 3.74 4.9 2.06 0.32 99.6555DCP4.444LOI=1.13DCP 37 709 410 25 200 5.9 4.8 2.2 7.8 42bdl 2 7 62 16.7 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;


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