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SAMPLE INFO : 95SJP9B
Sample ID:95SJP9B
Station ID:95SJP9B
Latitude:62.38490081
Longitude:-143.0260225
Datum:NAD83
Date Sampled:1995-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Field Lithology:Andesite
Text Description:
Approximately 40’ of agglutinated material at Site 8. Sample is from a vesicular block. Fine grained, vesicular, hypocrystalline, intersertal, seriate porphyritic with a matrix of brown glass and plagioclase. Plagioclase phenocrysts (An38 - An61) are up to 1.63 mm and often have normal zoning, and occasionally have oscillatory zoning, sieve textured zones, and/or resorption embayments. Olivine phenocrysts are up to 0.8 mm with alteration along the rim and brown melt inclusions. Orthopyroxene phenocrysts are up to 0.55 mm, one grain has a clinopyroxene rim. Clinopyroxene phenocrysts are up to 0.15 mm. 56.8% matrix, 20.5% plagioclase, 1.1% olivine, 0.3% clinopyroxene, 0.7% orthopyroxene, 20.6% 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
95SJP9B62.38490081-143.0260225Preece, S. J.1995-00-00 Skookum CreekNabesna B-5; T7N, R13E, S16Approximately 40’ of agglutinated material at Site 8. Sample is from a vesicular block. Fine grained, vesicular, hypocrystalline, intersertal, seriate porphyritic with a matrix of brown glass and plagioclase. Plagioclase phenocrysts (An38 - An61) are up to 1.63 mm and often have normal zoning, and occasionally have oscillatory zoning, sieve textured zones, and/or resorption embayments. Olivine phenocrysts are up to 0.8 mm with alteration along the rim and brown melt inclusions. Orthopyroxene phenocrysts are up to 0.55 mm, one grain has a clinopyroxene rim. Clinopyroxene phenocrysts are up to 0.15 mm. 56.8% matrix, 20.5% plagioclase, 1.1% olivine, 0.3% clinopyroxene, 0.7% orthopyroxene, 20.6% vesicles.95SJP9BTephra FallCumulateWhole-rock 57.2 0.99 17.9 6.48 0.11 4.16 7.21 3.84 1.14 0.19 100.155DCP7.166.48LOI=0.76DCP 21.4 476 532 21 124 3.8 2.5 1.7 20 176 20 37 32 67 17.7 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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