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SAMPLE INFO : 93SJP3
Sample ID:93SJP3
Station ID:93SJP3
Latitude:62.36267714
Longitude:-143.0782427
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Dacite
Text Description:
Rubbly outcrop of Dome E at Site 9. Fine-grained, hypocrystalline, porphyritic to glomeroporphyritic with a matrix of colorless glass, plagioclase and opaque. Plagioclase phenocrysts (An39 - An55) are up to 2.4 mm and commonly have large melt inclusions, complex zoning and minor resorption along rims; some grains have amphibole and opaque inclusions. Amphibole phenocrysts are up to 1.5 mm with brown-green pleochroism and frequently have opaque or feldspar inclusions; one grain has an orthopyroxene core. Orthopyroxene phenocrysts are up to 1.25 mm and are strongly pleochroic; some have opaque inclusions and a few grains have amphibole rims. Opaque phenocrysts are up to 0.3 mm. 75.4% matrix, 15.5% plagioclase, 1.7% orthopyroxene, 1.6% amphibole, 4.7% vesicles.

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
93SJP362.36267714-143.0782427Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T7N, R13E, S19Rubbly outcrop of Dome E at Site 9. Fine-grained, hypocrystalline, porphyritic to glomeroporphyritic with a matrix of colorless glass, plagioclase and opaque. Plagioclase phenocrysts (An39 - An55) are up to 2.4 mm and commonly have large melt inclusions, complex zoning and minor resorption along rims; some grains have amphibole and opaque inclusions. Amphibole phenocrysts are up to 1.5 mm with brown-green pleochroism and frequently have opaque or feldspar inclusions; one grain has an orthopyroxene core. Orthopyroxene phenocrysts are up to 1.25 mm and are strongly pleochroic; some have opaque inclusions and a few grains have amphibole rims. Opaque phenocrysts are up to 0.3 mm. 75.4% matrix, 15.5% plagioclase, 1.7% orthopyroxene, 1.6% amphibole, 4.7% vesicles.93SJP3LavaWhole-rock 67.62 0.49 15.99 3.3 0.09 1.21 3.42 4.8 2 0.16 99.0555DCP3.73.3LOI=0.89DCP 38 706 385 17.5 34.7 14.9 2.5 0.9 2.5 2.3 1.3 1.5 0.2 16 173 6.8 4.5 1.9 5.5 44bdl 3 10 53 16.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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