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SAMPLE INFO : 81ARj 11a
Sample ID:81ARj 11a
Station ID:81ARj 11a
Latitude:57.702612478371
Longitude:-156.41542477181
Datum:NAD83
Date Sampled:1981-01-01
Sample Type 1:Lahar
Field Lithology:Dacite
Text Description:
Porphyritic plagioclase-orthopyroxene dacite (s; high-silica andesite G). Glassy groundmass contains randomly oriented phenocrysts of orthopyroxene and larger phenocrysts of plagioclase (AN 64-68). Some parts of the thin section have glomeroporphyritic pyroxene and plagioclase; bulk of the phenocrysts are individual crystals. Plagioclase is weakly zoned.

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 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
81ARj 11a57.702612478371-156.41542477181Riehle, J. R.1981-01-01 Ugashik calderaUgashik C-2, Ugashik calderaPorphyritic plagioclase-orthopyroxene dacite (s; high-silica andesite G). Glassy groundmass contains randomly oriented phenocrysts of orthopyroxene and larger phenocrysts of plagioclase (AN 64-68). Some parts of the thin section have glomeroporphyritic pyroxene and plagioclase; bulk of the phenocrysts are individual crystals. Plagioclase is weakly zoned.81ARj 11aLaharBlockWhole-rock 61.2 0.61 17.8 5.7 0.13 2.83 6.83 3.41 1.4 0.16 97.614092XRF4.781.2

SAMPLE LOCATION

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