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SAMPLE INFO : 94SJP38
Sample ID:94SJP38
Station ID:94SJP38
Latitude:62.427404
Longitude:-143.1238023
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Andesite
Text Description:
Flow underlying 94SJP37 at Site 3. The flow is 30’ thick and above an extensive red baked zone on top of silicic vitrophyre. Flow is cut through by dike 94SJP39. Fine-grained, holocrystalline, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, orthopyroxene, clinopyroxene, yellow alteration and calcite. Plagioclase phenocrysts (An35 - An57) are up to 1.85 mm and some have complex zoning and sieve textured cores or intermediate zones. Orthopyroxene phenocrysts are up to 1.0 mm and some have clinopyroxene rims, sieve textured with opaque inclusions or plagioclase inclusions. Clinopyroxene phenocrysts are up to 0.15 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
94SJP3862.427404-143.1238023Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T8N, R12E, S35Flow underlying 94SJP37 at Site 3. The flow is 30’ thick and above an extensive red baked zone on top of silicic vitrophyre. Flow is cut through by dike 94SJP39. Fine-grained, holocrystalline, intergranular, seriate porphyritic with a matrix of mesostasis, opaque, orthopyroxene, clinopyroxene, yellow alteration and calcite. Plagioclase phenocrysts (An35 - An57) are up to 1.85 mm and some have complex zoning and sieve textured cores or intermediate zones. Orthopyroxene phenocrysts are up to 1.0 mm and some have clinopyroxene rims, sieve textured with opaque inclusions or plagioclase inclusions. Clinopyroxene phenocrysts are up to 0.15 mm.94SJP38LavaWhole-rock 58.59 0.86 17.11 5.76 0.1 4.78 6.94 3.58 1.27 0.21 99.2355DCP6.315.76LOI=0.8DCP 25.4 498 546 15 127 4.5 3.2 1.7 18.5 148 112 66 44 63 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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