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SAMPLE INFO : 94SJP108
Sample ID:94SJP108
Station ID:94SJP108
Latitude:62.21988639
Longitude:-143.1915688
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
 Text Description:
At least 50’ thick, columnar jointed flow with classic colonnade and entablature at south end of Jaeger Mesa. Fine grained, hypocrystalline, porphyritic to glomeroporphyritic with a matrix of pale brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene. Plagioclase phenocrysts (An42 - An52) are up to 3.37 mm and tend to have normal zoning, large melt inclusions, and occasional resorbed rims. Orthopyroxene phenocrysts are up to 1.5 mm, but most are <0.4 mm. Clinopyroxene phenocrysts are up to 0.35 mm. Olivine phenocrysts are up to 0.2 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
94SJP10862.21988639-143.1915688Preece, S. J.1994-00-00 Skookum CreekNabesna A-5; T5N, R12E, S16At least 50’ thick, columnar jointed flow with classic colonnade and entablature at south end of Jaeger Mesa. Fine grained, hypocrystalline, porphyritic to glomeroporphyritic with a matrix of pale brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene. Plagioclase phenocrysts (An42 - An52) are up to 3.37 mm and tend to have normal zoning, large melt inclusions, and occasional resorbed rims. Orthopyroxene phenocrysts are up to 1.5 mm, but most are <0.4 mm. Clinopyroxene phenocrysts are up to 0.35 mm. Olivine phenocrysts are up to 0.2 mm.94SJP108LavaWhole-rock 58.72 1.22 17.79 6.21 0.1 2.97 6.8 4.2 1.52 0.27 100.2355DCP6.876.21LOI=0.19DCP 30 584 522 26 186 6 3.8 2.7 19.1 192 39 35 66 68 18.8 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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