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SAMPLE INFO : 94SJP69
Sample ID:94SJP69
Station ID:94SJP69
Latitude:62.27044755
Longitude:-143.0704606
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
 Text Description:
Approximately 20' thick flow on the east side of Jaeger Mesa. Fine grained, holocrystalline, porphyritic with a matrix of opaque, plagioclase, microlites, orthopyroxene?, clinopyroxene and cryptocrystalline material. Plagioclase phenocrysts (An42-An61) are up to 3.0 mm, frequently have sieve textured cores and overgrowth rims and occasionally have resorption embayment; both normal and oscillatory zoning are present. Olivine phenocrysts are up to 1.1 and have opaque coronas. Clinopyroxene phenocrysts are up to 4.25 mm. Orthopyroxene phenocrysts are up to 1.3 mm. Mode: 70.8% matrix, 21.7% plagioclase, 4.0% olivine, 1.6% clinopyroxene, 1.9% orthopyroxene.

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
94SJP6962.27044755-143.0704606Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T6N, R13E, S30Approximately 20' thick flow on the east side of Jaeger Mesa. Fine grained, holocrystalline, porphyritic with a matrix of opaque, plagioclase, microlites, orthopyroxene?, clinopyroxene and cryptocrystalline material. Plagioclase phenocrysts (An42-An61) are up to 3.0 mm, frequently have sieve textured cores and overgrowth rims and occasionally have resorption embayment; both normal and oscillatory zoning are present. Olivine phenocrysts are up to 1.1 and have opaque coronas. Clinopyroxene phenocrysts are up to 4.25 mm. Orthopyroxene phenocrysts are up to 1.3 mm. Mode: 70.8% matrix, 21.7% plagioclase, 4.0% olivine, 1.6% clinopyroxene, 1.9% orthopyroxene.94SJP69LavaWhole-rock 57.11 0.77 18.3 5.9 0.11 5.21 7.53 3.84 1.16 0.18 98.6755DCP6.455.9LOI=-0.08DCP 19.4 406 579 15 96 2.9 1.9 2 18.2 148 89 84 51 64 17.5 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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