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SAMPLE INFO : Downes_1985_87-9C
Sample ID:Downes_1985_87-9C
Station ID:Downes_1985_87
Latitude:61.5
Longitude:-139.6
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Eastern lobe of the White River Ash. The ash layers lie not more than 1 m beneath the surface of the soil and are often seen as thin bands in quarries, road cutes, and river banks. To obtain a sample, a trench was cut at the bottom of the layer, the thickness was recorded, and a representative portion (about 1 kg) was collected. If the deposit was thick and apparently unreworked, several samples were taken in stratigraphic sequence (from Downes 1985 p. 929).

References:
Evidence for magma heterogeneity in the White River Ash (Yukon Territory)

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
Downes_1985_8761.5-139.6Unknown, Unknown 803--Imprecise goereference from Downes (1985). East of the US/Canada border, off the Alcan Highway. Eastern lobe of the White River Ash. The ash layers lie not more than 1 m beneath the surface of the soil and are often seen as thin bands in quarries, road cutes, and river banks. To obtain a sample, a trench was cut at the bottom of the layer, the thickness was recorded, and a representative portion (about 1 kg) was collected. If the deposit was thick and apparently unreworked, several samples were taken in stratigraphic sequence (from Downes 1985 p. 929). Downes_1985_87-9CTephra FallCumulateGlassBetween 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 75.57Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 0.22Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 14.23 1.73Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 0.05Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 0.38Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 1.9Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 2.83Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 3.13 Between 1 and 5 spots analyzed for each grain and the results averaged; standard deviation not reported. 100.641791EMP1.73

SAMPLE LOCATION

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