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SAMPLE INFO : 93SJP8
Sample ID:93SJP8
Station ID:93SJP8
Latitude:62.36656627
Longitude:-143.0543543
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
 Text Description:
First good outcrop above the Chisana Volcanics at Site 9. The flow is at least 25' thick. Fine-grained, holocrystalline, intergranular, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase, clinopyroxene and minor alteration. Plagioclase phenocrysts (An39-An62) are up to 2.1 mm, and frequently display sieved textured cores, and occasionally poikilitic pyroxene and/or opaque inclusions or resorption embayments. Olivine phenocrysts are up to 0.5 mm and are frequently rimmed by small pyroxene and plagioclase crystals. Orthopyroxene phenocrysts are up to 0.62 mm and some have clinopyroxene rims and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.7 mm. Opaque phenocrysts are up to 0.1 mm. Mode: 68.5% matrix, 24.5% plagioclase, 2.3% olivine, 2.5% clinopyroxene, 1.7% orthopyroxene, 0.2% alteration, 0.3% 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
93SJP862.36656627-143.0543543Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T7N, R13E, S20First good outcrop above the Chisana Volcanics at Site 9. The flow is at least 25' thick. Fine-grained, holocrystalline, intergranular, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase, clinopyroxene and minor alteration. Plagioclase phenocrysts (An39-An62) are up to 2.1 mm, and frequently display sieved textured cores, and occasionally poikilitic pyroxene and/or opaque inclusions or resorption embayments. Olivine phenocrysts are up to 0.5 mm and are frequently rimmed by small pyroxene and plagioclase crystals. Orthopyroxene phenocrysts are up to 0.62 mm and some have clinopyroxene rims and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.7 mm. Opaque phenocrysts are up to 0.1 mm. Mode: 68.5% matrix, 24.5% plagioclase, 2.3% olivine, 2.5% clinopyroxene, 1.7% orthopyroxene, 0.2% alteration, 0.3% vesicles.93SJP8LavaWhole-rock 56.1 0.85 17.45 6.32 0.11 5.52 8.46 3.45 1.36 0.21 99.8155DCP6.966.32LOI=0.16DCP 21.4 456 712 12 27.3 12.7 2.8 0.9 3.1 2.8 1.6 1.4 0.2 17 107 2.7 3.3 0.8 23.3 182 89 72 95 61 18.2 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, Cr, Cu, Zn;

SAMPLE LOCATION

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