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SAMPLE INFO : 93SJP5
Sample ID:93SJP5
Station ID:93SJP5
Latitude:62.3662885
Longitude:-143.06
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Dacite
 Text Description:
Very thick, platy flow at Site 9. Fine-grained, holocrystalline, weakly pilotaxitic, porphyritic to glomeroporphyritic with a matrix of brown glass, opaques and plagioclase. Plagioclase phenocrysts (An39 - An58) are up to 1.5 mm and some have oscillatory or normal zoning; many have large melt inclusions and poikilitic inclusions of opaque and orthopyroxene; the larger phenocrysts frequently have resorbed and/or spongy sieved cores with overgrowth rims. Orthopyroxene phenocrysts are up to 0.75 mm, intensely pleochroic, and may have opaque inclusions and/or occasional clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.35 mm. Opaque phenocrysts up to 0.3 mm. 76.4% matrix, 20.4% plagioclase, 0.1% clinopyroxene, 1.8% orthopyroxene, 1.2% opaque, 0.1% alteration.

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
93SJP562.3662885-143.06Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T7N, R13E, S19Very thick, platy flow at Site 9. Fine-grained, holocrystalline, weakly pilotaxitic, porphyritic to glomeroporphyritic with a matrix of brown glass, opaques and plagioclase. Plagioclase phenocrysts (An39 - An58) are up to 1.5 mm and some have oscillatory or normal zoning; many have large melt inclusions and poikilitic inclusions of opaque and orthopyroxene; the larger phenocrysts frequently have resorbed and/or spongy sieved cores with overgrowth rims. Orthopyroxene phenocrysts are up to 0.75 mm, intensely pleochroic, and may have opaque inclusions and/or occasional clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.35 mm. Opaque phenocrysts up to 0.3 mm. 76.4% matrix, 20.4% plagioclase, 0.1% clinopyroxene, 1.8% orthopyroxene, 1.2% opaque, 0.1% alteration.93SJP5LavaWhole-rock 64.92 0.76 16.66 4.32 0.11 1.55 4.05 5.11 1.93 0.26 99.7955DCP4.774.32LOI=0.35DCP 36 666 432 19.2 41.4 18.8 3.8 1.2 4.4 3.9 2.1 2.2 0.4 24 199 6.4 3.1 1.8 7.7 63 6 1 10 67 17.6 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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