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SAMPLE INFO : 94SJP105C
Sample ID:94SJP105C
Station ID:94SJP105C
Latitude:62.225
Longitude:-143.4824081
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Tephra Fall
Sample Type 2:Scoria
Text Description:
Scoria from an eroded cinder cone. Fine grained, vesicular, holocrystalline, trachytic, seriate porphyritic, oxidized with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (small lath An38, large grain An55) are up to 1.25 mm, and most are small laths; some larger grains have oscillatory zoning or sieve textured zones. An altered phase, olivine?, up to 0.15 mm is present. Opaque phenocrysts are up to 0.3 mm. Mode: 77.9% matrix, 0.9% plagioclase, 0.5% opaque, 0.6% vesicles, 20.1% alteration

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
94SJP105C62.225-143.4824081Preece, S. J.1994-00-00 Skookum CreekNabesna A-5, T5N, R10E, S12Scoria from an eroded cinder cone. Fine grained, vesicular, holocrystalline, trachytic, seriate porphyritic, oxidized with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (small lath An38, large grain An55) are up to 1.25 mm, and most are small laths; some larger grains have oscillatory zoning or sieve textured zones. An altered phase, olivine?, up to 0.15 mm is present. Opaque phenocrysts are up to 0.3 mm. Mode: 77.9% matrix, 0.9% plagioclase, 0.5% opaque, 0.6% vesicles, 20.1% alteration94SJP105CTephra FallCumulateWhole-rock 51.23 1.97 18.07 10.32 0.15 4.14 7.16 4.36 1.07 0.38 99.2655DCP11.2610.32LOI=1.12DCP 13.2 299 591 15.8 37.7 21 4.6 1.5 4.6 5.1 2.4 2.3 0.4 32 186 7.8 2.9 1.9 20.9 259 1 16 42 98 19.8 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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