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SAMPLE INFO : 81ARj 36
Sample ID:81ARj 36
Station ID:81ARj 36
Latitude:57.197603449103
Longitude:-156.7370635597
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Lava
Sample Type 2:Dome
Field Lithology:Dacite
Text Description:
older dome. Porphyritic dacite (S; high-silica andesite G). Strongly flow foliated, contains phenocrysts of plagioclase (An 60) and clinopyroxene in a devitrified groundmass. Minor alterations of phenocrysts in which clinopyroxene alters to bastite and opaque minerals. Abrupt transition in thin section from aphanitic to fine-grained groundmass.

References:
Map and tables showing geochronology and whole-rock geochemistry of selected samples, Ugashik and part of Karluk quadrangles, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedVolcanoEruptionLocation DescriptionText DescriptionSample IDMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
81ARj 3657.197603449103-156.7370635597Riehle, J. R.1981-01-01KialagvikUgashik A-3, Mount Kialagvikolder dome. Porphyritic dacite (S; high-silica andesite G). Strongly flow foliated, contains phenocrysts of plagioclase (An 60) and clinopyroxene in a devitrified groundmass. Minor alterations of phenocrysts in which clinopyroxene alters to bastite and opaque minerals. Abrupt transition in thin section from aphanitic to fine-grained groundmass.81ARj 36Whole Rock 60.4 0.79 18 5.96 0.12 3.13 7.29 2.92 1.7 0.16 97.044092XRF3.482.63

SAMPLE LOCATION

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