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SAMPLE INFO : 93SJP40
Sample ID:93SJP40
Station ID:93SJP40
Latitude:62.44490517
Longitude:-143.1235258
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Dike, trending ~N10°W, cutting through silicic material at Site 5. Fine-grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of mesostasis, brown glass, opaque, plagioclase and clinopyroxene. Plagioclase phenocrysts (An43 - An57 ,one grain An26) are up to 1.75 mm and complex zoning with prussian blue extinction is common, some have sieve textured intermediate zones, and there are occasional resorption embayments. Orthopyroxene phenocrysts are up to 0.9 mm with occasional clinopyroxene rims. Clinopyroxene phenocrysts are up to 1.8 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
93SJP4062.44490517-143.1235258Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T8N, R12E, S26Dike, trending ~N10°W, cutting through silicic material at Site 5. Fine-grained, hypocrystalline, intersertal, intergranular, seriate porphyritic with a matrix of mesostasis, brown glass, opaque, plagioclase and clinopyroxene. Plagioclase phenocrysts (An43 - An57 ,one grain An26) are up to 1.75 mm and complex zoning with prussian blue extinction is common, some have sieve textured intermediate zones, and there are occasional resorption embayments. Orthopyroxene phenocrysts are up to 0.9 mm with occasional clinopyroxene rims. Clinopyroxene phenocrysts are up to 1.8 mm.93SJP40LavaWhole-rock 58.08 1.1 17.3 6.41 0.13 4.1 6.86 4.2 1.44 0.23 100.1255DCP7.086.41LOI=0.14DCP 24.7 497 542 23 194 6.7 3.4 2 18.5 171 72 38 48 69 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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