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Sample ID:94SJP45
Station ID:94SJP45
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Dacite
Text Description:
A very platy dike trending N70E at Site 5. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and alteration. A 3.5 mm crystal clot of plagioclase, clinopyroxene and opaque is present. The lack of melting along the edge of the clot suggests that it is cognate. Plagioclase phenocrysts (An45 - An58) are up to 3.0 mm and often are rounded with both oscillatory and normal zoning and occasionally with resorption embayments. Orthopyroxene phenocrysts are up to 1.95 mm, intensely pleochroic and some have clinopyroxene rims and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.9 mm. Opaque phenocrysts are up to 0.3 mm.

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
94SJP4562.44768316-143.1474143Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S2694SJP45LavaWhole-rock 64.27 0.94 16.59 5.13 0.08 1.69 4.3 4.77 1.75 0.23 100.3555DCP5.695.13LOI=0.23DCP 31 600 411 25 208 6.5 3.4 2.4 11.6 129 7 8 15 68 18.5 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;


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