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SAMPLE INFO : 79AWs 6a
Sample ID:79AWs 6a
Station ID:79AWs 6a
Latitude:57.044251056775
Longitude:-157.4053987528
Datum:NAD83
Date Sampled:1979-01-01
Sample Type 1:Lava
Sample Type 2:Dike
Field Lithology:Andesite
Text Description:
Dark-greenish-gray (5 G 4/1), porphyritic andesite (S; basalt G) dike intruding Mesozoic sedimentary rocks. Major minerals are clinopyroxene and plagioclase (An 58). Abundant opaque oxides. Glomeroporphyritic phenocrysts of augite and sparse plagioclase in a groundmass of plagioclase, opaque minerals, and devitrified glass. Some augite phenocrysts are altered to calcite and uralite. Weak development of flow foliation as indicated by plagioclase laths in groundmass. Minor alteration of plagioclase phenocrysts. Associated with Yantarni volcanic center.

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

GEOCHEM DATA
StationIDlatitudelongitudeGeologistDateVisitedVolcanoLocationDescriptionTextDescriptionSample IDSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
79AWs 6a57.044251056775-157.4053987528Wilson, F. H.1979-01-01YantarniUgashik A-5, YantarniDark-greenish-gray (5 G 4/1), porphyritic andesite (S; basalt G) dike intruding Mesozoic sedimentary rocks. Major minerals are clinopyroxene and plagioclase (An 58). Abundant opaque oxides. Glomeroporphyritic phenocrysts of augite and sparse plagioclase in a groundmass of plagioclase, opaque minerals, and devitrified glass. Some augite phenocrysts are altered to calcite and uralite. Weak development of flow foliation as indicated by plagioclase laths in groundmass. Minor alteration of plagioclase phenocrysts. Associated with Yantarni volcanic center.79AWs 6a 52.488363056849 0.80906918006704 14.96777983124 8.018947591128 0.14158710651173 6.4219866167822 10.61903298838 2.1946001509319 1.0416765693363 0.28317421302347 99.354092XRF4.73.7CO2=1.33; H2OP=0.75; H2OM=0.9XRF

SAMPLE LOCATION

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Page modified: July 10, 2014 15:06
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