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SAMPLE INFO : 94SJP104A
Sample ID:94SJP104A
Station ID:94SJP104A
Latitude:62.41379182
Longitude:-143.0901906
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Dacite
 Text Description:
Float boulders in Finger Creek Bed from the upper part of Dome C. Fine grained, vesicular, holocrystalline, porphyritic to glomeroporphyritic with a matrix of cryptocrystalline material, feldspar, orthopyroxene, opaque and minor alteration. Plagioclase phenocrysts (An33 - An57) are up to 0.94 mm and commonly are oscillatory zoned; some have resorption embayments and cores tend to have large holes present. Amphibole phenocrysts are up to 1.7 mm, most are dehydrated to fine opaque, with only a few amphibole cores preserved. Orthopyroxene phenocrysts are up to 0.6 mm and some have opaque inclusions. Opaque phenocrysts are up to 0.25 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
94SJP104A62.41379182-143.0901906Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, R12E, S1Float boulders in Finger Creek Bed from the upper part of Dome C. Fine grained, vesicular, holocrystalline, porphyritic to glomeroporphyritic with a matrix of cryptocrystalline material, feldspar, orthopyroxene, opaque and minor alteration. Plagioclase phenocrysts (An33 - An57) are up to 0.94 mm and commonly are oscillatory zoned; some have resorption embayments and cores tend to have large holes present. Amphibole phenocrysts are up to 1.7 mm, most are dehydrated to fine opaque, with only a few amphibole cores preserved. Orthopyroxene phenocrysts are up to 0.6 mm and some have opaque inclusions. Opaque phenocrysts are up to 0.25 mm.94SJP104ALavaWhole-rock 69.1 0.48 15.94 3.09 0.06 1.04 3.03 4.52 2.17 0.09 100.4455DCP3.433.09LOI=0.49DCP 40 743 434 18 37.6 14.6 2.7 0.8 2.4 2.2 1.3 1.4 0.2 13 147 5.6 3.3 1.9 5 54bdl 3 9 47 15.7 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, Cu, Zn;

SAMPLE LOCATION

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