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SAMPLE INFO : 72-PCL-68
Sample ID:72-PCL-68
Station ID:72-PCL-68
Latitude:62.2675
Longitude:-143.48788
Datum:NAD83
Date Sampled:1972-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Epoch Guess:Oligocene
Text Description:
Wrangell Lava. Andesite and basaltic andesite flows - Extensive sequence of thin to medium flows with oxidized dark-red scoriaceous tops and bottoms. May include younger thin basalt flows from local eruptive centers. Rocks are gray to dark gray with small (<1 mm) phenocrysts of olivine and minor hypersthene in a fine-grained intergranular to intersertal matrix of plagioclase and augite. Locally, rocks are altered to chlorite and clay minerals. Sources probably to the west in the Nabsena B-6 quadrangle. Rocks distinguished from similar unit QTau by predominance of olivine over hypersthene and by absence of pyroclastic beds

References:
Geologic map of the Nabesna B-5 Quadrangle, 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
72-PCL-6862.2675-143.48788Lowe, P. C.1972-00-00 Nabesna B-5 Quadrangle; latitude and longitude derived from paper map. Wrangell Lava. Andesite and basaltic andesite flows - Extensive sequence of thin to medium flows with oxidized dark-red scoriaceous tops and bottoms. May include younger thin basalt flows from local eruptive centers. Rocks are gray to dark gray with small (<1 mm) phenocrysts of olivine and minor hypersthene in a fine-grained intergranular to intersertal matrix of plagioclase and augite. Locally, rocks are altered to chlorite and clay minerals. Sources probably to the west in the Nabsena B-6 quadrangle. Rocks distinguished from similar unit QTau by predominance of olivine over hypersthene and by absence of pyroclastic beds72-PCL-68LavaWhole-rock 57.2 0.84 18 5.5 0.1 4.9 7.8 3 1.2 0.17 100.14540RAPIDA1.83.9H2OP=1; H2OM=0.27; CO2=0.05RAPIDA

SAMPLE LOCATION

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