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SAMPLE INFO : 96TOK1-20
Sample ID:96TOK1-20
Station ID:96TOK1
Latitude:63.198
Longitude:-142.178
Datum:NAD83
Sample Type 1:Tephra Fall
 Text Description:
Collected from within stratigraphic Unit 5, which consists of 2 m of massive loess. Highly vesicular pumice with an average grain size of 200 microns. Sample collected in a sandy, micro-pumice layer within a few horizontal meters of sample 96TOK1-23.

References:
Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, 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
96TOK163.198-142.178Schaefer, J. R. G.0000-00-00 Road-cut at mile 1284.6 of the Alaska Highway, southeast of Tok, Alaska. Approximately 17 miles east of Tetlin Junction and 100 miles north of Wrangell volcanic field. Twelve-m-thick section that exposes interbedded sands, silt and tephra that were deposited against a southeasterly sloping, highly weathered intrusive rock. The section is divided into six units based on lithology. Ten tephra samples were taken; however, approximately one m below tephra 96TOK1-9, there are wispy layers of several multiple-banded tephras that were very thin and discontinuous and not detailed in Schaefer (2002). Datum not specified, assumed to be NAD83. Collected from within stratigraphic Unit 5, which consists of 2 m of massive loess. Highly vesicular pumice with an average grain size of 200 microns. Sample collected in a sandy, micro-pumice layer within a few horizontal meters of sample 96TOK1-23. 96TOK1-20Tephra FallCumulateGlass 74.85 0.27 14.35 0.45 1.73 4.19 2.95 Reported standard deviation of zero. 1003668EMP1.17Cl=0.05EMP

SAMPLE LOCATION

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