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SAMPLE INFO : 81ARj 16
Sample ID:81ARj 16
Station ID:81ARj 16
Latitude:57.175936113448
Longitude:-156.76039573371
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Dacite
Text Description:
Porphyritic plagioclase-orthopyroxene-clinopyroxene dacite (S; high-silica andesite G) flow. Weakly foliated phenocrysts of plagioclase (An 58) in a glassy groundmass. Grain boundaries and fractures in some clinopyroxene are altered to opaque minerals. Larger phenocrysts are fractured and shattered. Rare lithic (?) fragments. Rounded quartz phenocrysts in reaction relation with groundmass.

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

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2geologic 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
81ARj 16 57.175936113448 -156.76039573371 Riehle, J. R. 1981-01-01 Kialagvik Ugashik A-3, Mount Kialagvik Porphyritic plagioclase-orthopyroxene-clinopyroxene dacite (S; high-silica andesite G) flow. Weakly foliated phenocrysts of plagioclase (An 58) in a glassy groundmass. Grain boundaries and fractures in some clinopyroxene are altered to opaque minerals. Larger phenocrysts are fractured and shattered. Rare lithic (?) fragments. Rounded quartz phenocrysts in reaction relation with groundmass. 81ARj 16 Lava Whole Rock 61.2 0.78 17.4 6.24 0.11 2.68 6.53 3.03 1.78 0.17 98.434092XRF3.43.02

SAMPLE LOCATION

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