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SAMPLE INFO : 93SJP19
Sample ID:93SJP19
Station ID:93SJP19
Latitude:62.47073978
Longitude:-143.0543619
Datum:NAD83
Date Sampled:1993-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basaltic Andesite
 Text Description:
Top flow in the upper andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline, intersertal, intergranular, porphyritic to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene?. Plagioclase phenocrysts (An42-An61) are up to 3.07 mm and oscillatory zoning is common; occasionally there are sieve textured zones. Orthopyroxene phenocrysts are up to 2.75 mm and have occasional altered patches, melt inclusions, olivine? or clinopyroxene? inclusions and some have thin clinopyroxene rims. Clinopyroxene phenocrysts are up to 1.02 mm. Mode: 55.9% matrix, 25.5% plagioclase, 1.0% clinopyroxene, 4.7% orthopyroxene, 12.9% vesicles.

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
93SJP1962.47073978-143.0543619Preece, S. J.1993-00-00 Skookum CreekNabesna B-5, T8N, R13E, S17Top flow in the upper andesite package at Site 1 in the Boyden Hills. Fine-grained, vesicular, hypocrystalline, intersertal, intergranular, porphyritic to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene?. Plagioclase phenocrysts (An42-An61) are up to 3.07 mm and oscillatory zoning is common; occasionally there are sieve textured zones. Orthopyroxene phenocrysts are up to 2.75 mm and have occasional altered patches, melt inclusions, olivine? or clinopyroxene? inclusions and some have thin clinopyroxene rims. Clinopyroxene phenocrysts are up to 1.02 mm. Mode: 55.9% matrix, 25.5% plagioclase, 1.0% clinopyroxene, 4.7% orthopyroxene, 12.9% vesicles.93SJP19LavaWhole-rock 56.5 1.2 17.88 6.75 0.13 4.27 7.42 4.14 1.19 0.16 100.1755DCP7.466.75LOI=0.36DCP 19.4 393 554 23 150 5.3 2< 0.5 20.2 164 46 31 40 70 17.8 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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