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SAMPLE INFO : 94SJP2
Sample ID:94SJP2
Station ID:94SJP2
Latitude:62.30155964
Longitude:-143.2554608
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
Text Description:
Lowest-most outcrop on west side of the creek. The flow is 15-20' thick and dips N60E, 45W at Site 15. The flow is overlain by 94SJP3 and underlain by yellow lahar. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase (An36-An40), clinopyroxene, opaque, and alteration. Clay balls are present. Plagioclase phenocrysts (An37-An61) are up to 1.5 mm and sometimes occur in glomeroporphyritic clots; most are not zoned; the larger grains have normal zoning or rarely oscillatory zoning. Clinopyroxene phenocrysts are up to 0.5 mm. An altered phase, probably olivine, is also present. Mode: 75.5% matrix, 8.2% plagioclase, 0.2% clinopyroxene, 16.1% 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
94SJP262.30155964-143.2554608Preece, S. J.1994-00-00 Skookum CreekNabesna B-5, T6N, R12E, S18Lowest-most outcrop on west side of the creek. The flow is 15-20' thick and dips N60E, 45W at Site 15. The flow is overlain by 94SJP3 and underlain by yellow lahar. Fine grained, holocrystalline, porphyritic with a matrix of plagioclase (An36-An40), clinopyroxene, opaque, and alteration. Clay balls are present. Plagioclase phenocrysts (An37-An61) are up to 1.5 mm and sometimes occur in glomeroporphyritic clots; most are not zoned; the larger grains have normal zoning or rarely oscillatory zoning. Clinopyroxene phenocrysts are up to 0.5 mm. An altered phase, probably olivine, is also present. Mode: 75.5% matrix, 8.2% plagioclase, 0.2% clinopyroxene, 16.1% alteration.94SJP2LavaWhole-rock 52.34 1.39 17.13 8.57 0.13 6.04 9.21 3.7 0.44 0.24 99.455DCP9.388.57LOI=0.79DCP 7.1 219 329 9.1 24.4 14.1 3.8 1.3 4.8 4.7 2.9 2.8 0.4 32 131 2.6 2.7 1.6 35.4 216 162 51 54 64 17.8 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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