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SAMPLE INFO : 95SJP4G
Sample ID:95SJP4G
Station ID:95SJP4G
Latitude:62.40240202
Longitude:-143.0499124
Datum:NAD83
Date Sampled:1995-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Field Lithology:Andesite
Text Description:
Agglutinated wall overlying a very thick pyroclastic flow at Site 8. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene? and calcite patches. Plagioclase phenocrysts (An41 - An57) are up to 1.4 mm, sieve textured zones and normal zoning are common; there is occasionally oscillatory zoning and mica alteration. Olivine phenocrysts are up to 2.0 mm and partially to totally altered. Orthopyroxene phenocrysts are up to 0.85 mm and sieve textured; smaller crystals have clinopyroxene rims. 74.7% matrix, 20.7% plagioclase, 2.8% olivine, 1.6% clinopyroxene, 0.2% 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
95SJP4G62.40240202-143.0499124Preece, S. J.1995-00-00 Skookum CreekNabesna B-5; T7N, R13E, S8Agglutinated wall overlying a very thick pyroclastic flow at Site 8. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene? and calcite patches. Plagioclase phenocrysts (An41 - An57) are up to 1.4 mm, sieve textured zones and normal zoning are common; there is occasionally oscillatory zoning and mica alteration. Olivine phenocrysts are up to 2.0 mm and partially to totally altered. Orthopyroxene phenocrysts are up to 0.85 mm and sieve textured; smaller crystals have clinopyroxene rims. 74.7% matrix, 20.7% plagioclase, 2.8% olivine, 1.6% clinopyroxene, 0.2% alteration.95SJP4GTephra FallCumulateWhole-rock 57.58 1 16.59 6.47 0.11 5.35 6.94 3.7 1.44 0.23 100.5555DCP7.186.47LOI=0.57DCP 27 520 541 23 153 4.9 4.7 1.7 20.3 159 171 125 60 70 17 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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