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SAMPLE INFO : 93SJP6
Sample ID:93SJP6
Station ID:93SJP6
Latitude:62.36684409
Longitude:-143.0604653
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Dacite
Text Description:
Massive, platy flow underneath a lahar at Site 9. Fine-grained, holocrystalline, seriate to glomeroporphyritic with a matrix of cryptocrystalline material, plagioclase, opaques and alteration. Matrix has a 'mothy' look caused by patches of commonly oriented plagioclase needles and small crystals. Plagioclase phenocrysts (An42 - An64) are up to 0.7 mm and commonly are oscillatory zoned; some have resorbed rims. Orthopyroxene are up to 0.62 mm and are intensely pleochroic; some have opaque inclusions. Clinopyroxene phenocrysts are up to 0.25 mm. Opaque phenocrysts are up to 0.35 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
93SJP662.36684409-143.0604653Preece, S. J.1993-00-00 Skookum CreekNabesna B-5; T7N, R13E, S19Massive, platy flow underneath a lahar at Site 9. Fine-grained, holocrystalline, seriate to glomeroporphyritic with a matrix of cryptocrystalline material, plagioclase, opaques and alteration. Matrix has a 'mothy' look caused by patches of commonly oriented plagioclase needles and small crystals. Plagioclase phenocrysts (An42 - An64) are up to 0.7 mm and commonly are oscillatory zoned; some have resorbed rims. Orthopyroxene are up to 0.62 mm and are intensely pleochroic; some have opaque inclusions. Clinopyroxene phenocrysts are up to 0.25 mm. Opaque phenocrysts are up to 0.35 mm.93SJP6LavaWhole-rock 65.76 0.7 16.53 4.1 0.1 1.34 3.89 5.14 1.93 0.25 99.8455DCP4.564.1LOI=0.23DCP 35 679 428 24 196 6 4.2 1.1 6.9 50 3 1 4 64 17.1 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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