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Sample ID:94SJP9
Station ID:94SJP9
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Text Description:
Rubbly outcrop of a dike trending ~N84E at Site 12. Fine grained, vesicular, hypocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, orthopyroxene, pale brown glass and minor alteration. Plagioclase phenocrysts (An53) are up to 0.7 mm and both oscillatory and normal zoning are common. Amphibole phenocrysts are up to 0.8 mm and are dehydrated to granular opaque masses with green-brown pleochroic cores; most grains are entirely replaced. Orthopyroxene phenocrysts are up to 0.3 mm. Opaque phenocrysts are up to 0.2 mm (not including pseudomorphs after amphibole). Trachydacite.

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
94SJP962.28239141-143.2487935Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T6N, R12E, S1994SJP9LavaWhole-rock 65.69 0.6 17.1 4.2 0.2 1.11 2.77 6.01 1.85 0.36 98.7555DCP4.594.2LOI=0.1DCP 18.7 595 435 44 467 17.7 5.8 2.8 3.5bdl bdl 2 2 101 19.9 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc; MX: Sr, Y, Cu, Zn;


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