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SAMPLE INFO : UT861
Sample ID:UT861
Station ID:Gold_Hill_I
Latitude:64.8
Longitude:-147.9
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Oldest tephra at this section; occurs as powdery white pods up to 4.6-5 cm thick, but generally about 2 cm thick, that repeat vertically over a 10 cm interval. Pods are partially oxidized and interbedded with massive, grey (2.5Y7/2), well-consolidated silt that is mottled with orange-white oxidation patches. Generally sharp, undulating base that locally may be diffuse; upper contact that is very irregular and either sharp or interfingering with the surrounding loess. Charcoal flecks are present in the tephra, but there are few crystals. Slightly coarser ash with some crystals occurs at the base of a few pods.

References:
Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska
Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska
Late Pliocene Dawson Cut forest bed and new tephrochronological findings in the Gold Hill Loess, east-central 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
Gold_Hill_I64.8-147.9Preece, S. J. Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; Gold Hill Loess is 27 m thick at this station. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Oldest tephra at this section; occurs as powdery white pods up to 4.6-5 cm thick, but generally about 2 cm thick, that repeat vertically over a 10 cm interval. Pods are partially oxidized and interbedded with massive, grey (2.5Y7/2), well-consolidated silt that is mottled with orange-white oxidation patches. Generally sharp, undulating base that locally may be diffuse; upper contact that is very irregular and either sharp or interfingering with the surrounding loess. Charcoal flecks are present in the tephra, but there are few crystals. Slightly coarser ash with some crystals occurs at the base of a few pods.UT861Tephra FallCumulateGlass 77.75Reported analytical value of zero. Reported standard deviation value of zero. 0 13.35 0.44 0.22Reported analytical value of zero. Reported standard deviation value of zero. 0 0.53 3.38 4.44 93.6556EMP0.44Cl=0 5.68 106 1211 69 8.41 17.7 8.8 2 0.36 0.42 1.93 0.36 1.76 2.14 2.76 4.27 4.39 1.44 38 56INAA
Gold_Hill_I64.8-147.9Preece, S. J. Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; Gold Hill Loess is 27 m thick at this station. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Oldest tephra at this section; occurs as powdery white pods up to 4.6-5 cm thick, but generally about 2 cm thick, that repeat vertically over a 10 cm interval. Pods are partially oxidized and interbedded with massive, grey (2.5Y7/2), well-consolidated silt that is mottled with orange-white oxidation patches. Generally sharp, undulating base that locally may be diffuse; upper contact that is very irregular and either sharp or interfingering with the surrounding loess. Charcoal flecks are present in the tephra, but there are few crystals. Slightly coarser ash with some crystals occurs at the base of a few pods.UT861Tephra FallCumulateGlass Cl=0 5.68 1210 8.41 17.7 8.8 2 0.36 0.42 1.93 0.36 1.76 2.14 2.76 4.27 4.39 40 996INAA

SAMPLE LOCATION

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