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SAMPLE INFO : 94SJP58B
Sample ID:94SJP58B
Station ID:94SJP58
Latitude:62.29
Longitude:-143.2387938
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Basaltic Andesite
Text Description:
A 2-3' thick dike that has been boudinaged and cuts through brecciated unit (sBA9) at Site 12. 94SJP58B is about 40' south of 94SJP58A. Fine grained, hypocrystalline, trachytic, intersertal, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, microlites, clinopyroxene and olivine. Plagioclase phenocrysts (An32-An57) are up to 1.7 mm and display minor normal zoning; sieve textured cores are uncommon. Olivine phenocrysts are up to 2.0 mm and a few are swallow-tailed or skeletal. Clinopyroxene phenocrysts are up to 2.25 mm. Orthopyroxene are up to 0.6 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
94SJP5862.29-143.2387938Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T6N, R12E, S20A 2-3' thick dike that has been boudinaged and cuts through brecciated unit (sBA9) at Site 12. 94SJP58B is about 40' south of 94SJP58A. Fine grained, hypocrystalline, trachytic, intersertal, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, microlites, clinopyroxene and olivine. Plagioclase phenocrysts (An32-An57) are up to 1.7 mm and display minor normal zoning; sieve textured cores are uncommon. Olivine phenocrysts are up to 2.0 mm and a few are swallow-tailed or skeletal. Clinopyroxene phenocrysts are up to 2.25 mm. Orthopyroxene are up to 0.6 mm.94SJP58BLavaWhole-rock 55.74 1.12 17.68 6.6 0.12 5.36 7.58 3.91 1.19 0.48 99.9355DCP7.26.6LOI=0.29DCP 16.4 323 560 20 140 7 1.4 0.5 20.8 149 145 64 64 62 17.8 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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