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SAMPLE INFO : 93SJP14B
Sample ID:93SJP14B
Station ID:93SJP14B
Latitude:62.40934712
Longitude:-143.0982457
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Agglutinate
Field Lithology:Basaltic Andesite
Text Description:
Agglutinate from large blocks that have fallen from higher up section at Site 7. This sample is from the contact between red scoriaceous material and gray massive material. Fine-grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An45-An62) are up to 1 mm, some display sieve textured zones or rarely oscillatory zoning, and normal zoning is common. Orthopyroxene phenocrysts are up to 0.8 mm and frequently display clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.5 mm. An altered phase, up to 0.7 mm, 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
93SJP14B62.40934712-143.0982457Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T7N, R12E, S12Agglutinate from large blocks that have fallen from higher up section at Site 7. This sample is from the contact between red scoriaceous material and gray massive material. Fine-grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An45-An62) are up to 1 mm, some display sieve textured zones or rarely oscillatory zoning, and normal zoning is common. Orthopyroxene phenocrysts are up to 0.8 mm and frequently display clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.5 mm. An altered phase, up to 0.7 mm, is present.93SJP14BTephra FallCumulateWhole-rock 55.51 0.87 17.78 6.48 0.1 4.74 8.51 3.24 1.2 0.12 99.6555DCP7.126.48LOI=1.42DCP 23.3 422 721 16 110 3.1 6.7 0.5 22.9 183 93 66 90 64 18 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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