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SAMPLE INFO : Kit-64_175-181
Sample ID:Kit-64_175-181
Station ID:Kit-64
Latitude:66.4613
Longitude:-164.1394
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Sub-sample of 1 m thick layer of volcanic air-fall tephra. All samples between 243 and 155 cm yielded a similar basltic-tachybasaltic to basaltic andesitic glass composition pointing to a single eruption source for the entire layer. However, differences in particle size indicated different eruption phases of unknown duration. Sharp edges and pronounced vesicles of glass shards indicate a low stage of alteration or only very limited redeposition processes.

References:
Mid-Wisconsin to Holocene Permafrost and Landscape Dynamics based on a Drained Lake Basin Core from the Northern Seward Peninsula, Northwest Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialCoeffSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-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
Kit-6466.4613-164.1394Unknown, Unknown0000-00-00< 41500 ± 1500 14C AMS; 12981; Sediments directly underlying tephra (lab number Poz-49851). EspenbergApproximately 4 m long sediment core from a drained thermokarst lake basin on the northern Seward Peninsula in western Arctic Alaska. Coordinates given in degrees, minutes, seconds and converted to decimal degrees; datum not specified, assumed to be NAD83. Sub-sample of 1 m thick layer of volcanic air-fall tephra. All samples between 243 and 155 cm yielded a similar basltic-tachybasaltic to basaltic andesitic glass composition pointing to a single eruption source for the entire layer. However, differences in particle size indicated different eruption phases of unknown duration. Sharp edges and pronounced vesicles of glass shards indicate a low stage of alteration or only very limited redeposition processes.Kit-64_175-181Tephra FallCumulateGlass 51.61 2.59 15.24 9.72 0.14 5.65 9.3 3.85 1.41 0.49 10012981EMP9.72Cl=0.03; F=0EMP

SAMPLE LOCATION

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