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SAMPLE INFO : 95SJP5
Sample ID:95SJP5
Station ID:95SJP5
Latitude:62.40184642
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 approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized.

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
95SJP562.40184642-143.0499124Preece, S. J.1995-00-00 Skookum CreekNabesna B-5; T7N, R13E, S8Agglutinated wall approximately 15’ above a thick pyroclastic flow at Site 7. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene, clinopyroxene and minor alteration lining vesicles. Plagioclase phenocrysts (An36 - An62) are up to 2.88 mm and sieve textured zones are common; normal zoning is common and some grains have oscillatory zoning. An altered phase, now composed of olivine?, of iddingsite, serpentine ± opaque is present. Orthopyroxene phenocrysts are up to 0.98 mm, and occasionally have sieve textured zones. Clinopyroxene phenocrysts are up to 0.15 mm. Opaque phenocrysts are up to 0.1 mm, but most are matrix sized.95SJP5Tephra FallCumulateWhole-rock 57.93 1.03 16.86 6.53 0.13 4.32 7.09 3.52 1.33 0.25 100.6455DCP7.256.53LOI=1.02DCP 27 514 565 23 153 5.2 4.3 1.8 21.2 162 167 121 59 68 17.6 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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