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SAMPLE INFO : 93SJP24
Sample ID:93SJP24
Station ID:93SJP24
Latitude:62.47740701
Longitude:-143.0743622
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Text Description:
From 10' thick flow in the middle of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline, intersertal, intergranular, porphyritic with a matrix of brown glass, clinopyroxene, opaque, minor alteration, microlites and a little plagioclase. Plagioclase phenocrysts (An43-An62) are up to 1.32 mm, and mainly occur as laths that partially include matrix minerals along the rims, some have normal zoning, or occasionally are sieve textured. Olivine phenocrysts are up to 1.5 mm, have some iddingsite alteration, and occasionally have opaque inclusions. Opaque phenocrysts are up to 0.1 mm.

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
93SJP2462.47740701-143.0743622Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R13E, S18From 10' thick flow in the middle of the second andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline, intersertal, intergranular, porphyritic with a matrix of brown glass, clinopyroxene, opaque, minor alteration, microlites and a little plagioclase. Plagioclase phenocrysts (An43-An62) are up to 1.32 mm, and mainly occur as laths that partially include matrix minerals along the rims, some have normal zoning, or occasionally are sieve textured. Olivine phenocrysts are up to 1.5 mm, have some iddingsite alteration, and occasionally have opaque inclusions. Opaque phenocrysts are up to 0.1 mm.93SJP24LavaWhole-rock 54.3 1.18 17.57 7.03 0.12 6.33 8.6 3.75 0.94 0.13 100.155DCP7.767.03LOI=0.1DCP 15.7 331 553 20 131 4.9 0.7 2 23.6 169 164 81 56 59 16.9 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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