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SAMPLE INFO : 93SJP32
Sample ID:93SJP32
Station ID:93SJP32
Latitude:62.43073742
Longitude:-143.0976918
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Basaltic Andesite
Text Description:
Subvertical dike , about 1 m thick, trending N32E cutting through silicic material of Dome A at Site 2. The dike is cross-cut by dike 93SJP31. Fine-grained, seriate, intersertal, hypocrystalline with a matrix of brown glass, opaque, plagioclase microlites, clinopyroxene and yellow alteration. Plagioclase phenocrysts (An30-An58) are 1.6 - 0.05 mm, and some larger grains have complex zoning, sieve textured intermediate zones; most grains have little zoning. Orthopyroxene phenocrysts are 1.0 - 0.05 mm and have poorly developed clinopyroxene rims. Clinopyroxene phenocrysts are 0.8 - 0.05 mm, and twinning is common. Olivine phenocrysts are 0.9-0.1 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
93SJP3262.43073742-143.0976918Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R12E, S36Subvertical dike , about 1 m thick, trending N32E cutting through silicic material of Dome A at Site 2. The dike is cross-cut by dike 93SJP31. Fine-grained, seriate, intersertal, hypocrystalline with a matrix of brown glass, opaque, plagioclase microlites, clinopyroxene and yellow alteration. Plagioclase phenocrysts (An30-An58) are 1.6 - 0.05 mm, and some larger grains have complex zoning, sieve textured intermediate zones; most grains have little zoning. Orthopyroxene phenocrysts are 1.0 - 0.05 mm and have poorly developed clinopyroxene rims. Clinopyroxene phenocrysts are 0.8 - 0.05 mm, and twinning is common. Olivine phenocrysts are 0.9-0.1 mm.93SJP32LavaWhole-rock 54.3 0.94 17.33 6.49 0.12 5.28 8.93 3.3 1.3 0.2 100.255DCP7.186.49LOI=1.78DCP 18.8 403 692 17 111 3.3 4 0.7 23.5 200 107 52 99 65 18.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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