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SAMPLE INFO : 94SJP84B
Sample ID:94SJP84B
Station ID:94SJP84B
Latitude:62.38128962
Longitude:-143.1632427
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Field Lithology:Andesite
Text Description:
Agglutinated material that forms walls and spatter ramparts. Fine grained, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, alteration, opaque and plagioclase. Plagioclase phenocrysts (An39 - An60) are up to 1.5 mm; both normal and oscillatory zoning is present; grains occasionally have sieve textured zones. Orthopyroxene phenocrysts are up to 1.0 mm and occasionally have sieve textured zones and/or opaque inclusions. Clinopyroxene phenocrysts are up to 1.32 mm. An altered phase, probably olivine, is present.

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
94SJP84B62.38128962-143.1632427Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R12E, S15Agglutinated material that forms walls and spatter ramparts. Fine grained, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, alteration, opaque and plagioclase. Plagioclase phenocrysts (An39 - An60) are up to 1.5 mm; both normal and oscillatory zoning is present; grains occasionally have sieve textured zones. Orthopyroxene phenocrysts are up to 1.0 mm and occasionally have sieve textured zones and/or opaque inclusions. Clinopyroxene phenocrysts are up to 1.32 mm. An altered phase, probably olivine, is present.94SJP84BTephra FallCumulateWhole-rock 57.94 1.1 17.67 6.39 0.11 3.64 7.01 4.18 1.13 0.3 100.3855DCP7.086.39LOI=0.49DCP 16.8 451 555 22 137 4.2 2 1.8 19.2 188 22 26 35 70 18.2 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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