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SAMPLE INFO : 93SJP34
Sample ID:93SJP34
Station ID:93SJP34
Latitude:62
Longitude:-143
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Near vertical, ~ 1 m thick dike trending N30°E and cutting through Dome A at Site 2. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, locally intergranular, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and reddish alteration. Plagioclase phenocrysts (An31 - An58) are up to 1.85 mm and many of the larger grains are strongly sieve textured and may have thin overgrowth rims; complex zonation is common. Orthopyroxene phenocrysts are 0.7-0.12 mm. An altered phase is present.

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
93SJP3462-143Preece, S. J.1993-00-00 Skookum CreekNabesna B-5Near vertical, ~ 1 m thick dike trending N30°E and cutting through Dome A at Site 2. Fine-grained, vesicular, diktytaxitic, hypocrystalline, intersertal, locally intergranular, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and reddish alteration. Plagioclase phenocrysts (An31 - An58) are up to 1.85 mm and many of the larger grains are strongly sieve textured and may have thin overgrowth rims; complex zonation is common. Orthopyroxene phenocrysts are 0.7-0.12 mm. An altered phase is present. 93SJP34LavaWhole-rock 57.27 1 18.35 6.32 0.11 3.39 7.31 3.95 1.25 0.24 99.9555DCP6.976.32LOI=0.8DCP 21.3 493 549 19 134 4.9 2.1 2.2 17.7 176 10 27 44 71 18.6 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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