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SAMPLE INFO : UT873
Sample ID:UT873
Station ID:Gold_Hill_III
Latitude:64.9
Longitude:-147.9
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Pod that is 4 mm thick by 10 cm long and lacks any obvious mafic minerals. Sharp upper and lower contacts and interbedded with orange-brown oxidized silt. Preserved in a thin peat about 1 m above sample UT497 at this location.

References:
Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska
Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska
The Dawson Cut Forest Bed in the Fairbanks area, Alaska, is about two million years old
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_III64.9-147.9Preece, S. J.< 2020000 ± 140000 stratigraphy; 996; Weighted mean average of two dates obtained on sample UT497, which is stratigraphically below this sample (therefore this sample is younger). See Preece and others (1999) for methods.Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 30 m to the east of station Preece_1999_Gold_Hill_II. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Pod that is 4 mm thick by 10 cm long and lacks any obvious mafic minerals. Sharp upper and lower contacts and interbedded with orange-brown oxidized silt. Preserved in a thin peat about 1 m above sample UT497 at this location.UT873Tephra FallCumulateGlass 78.59 0.2 13.13 0.68Reported analytical value of zero. Reported standard deviation value of zero. 0Reported analytical value of zero. Reported standard deviation value of zero. 0 1.05 3.72 2.79 91.5156EMP0.68Cl=0.01EMP
Gold_Hill_III64.9-147.9Preece, S. J.< 2020000 ± 140000 stratigraphy; 996; Weighted mean average of two dates obtained on sample UT497, which is stratigraphically below this sample (therefore this sample is younger). See Preece and others (1999) for methods.Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 30 m to the east of station Preece_1999_Gold_Hill_II. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Pod that is 4 mm thick by 10 cm long and lacks any obvious mafic minerals. Sharp upper and lower contacts and interbedded with orange-brown oxidized silt. Preserved in a thin peat about 1 m above sample UT497 at this location.UT873Tephra FallCumulateGlass 77.55 0.12 13.37 0.72 0.06 0.21 1.14 4.04 2.77 4792EMP0.72H2O=5.59; Cl=0.05EMP
Gold_Hill_III64.9-147.9Preece, S. J.< 2020000 ± 140000 stratigraphy; 996; Weighted mean average of two dates obtained on sample UT497, which is stratigraphically below this sample (therefore this sample is younger). See Preece and others (1999) for methods.Trench dug down to the cliff face on the north side of the Gold Hill mining cut, Fairbanks, Alaska; located approximately 30 m to the east of station Preece_1999_Gold_Hill_II. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Pod that is 4 mm thick by 10 cm long and lacks any obvious mafic minerals. Sharp upper and lower contacts and interbedded with orange-brown oxidized silt. Preserved in a thin peat about 1 m above sample UT497 at this location.UT873Tephra FallCumulateGlass 78.61 0.2 13.13 0.68 1.05 3.73 2.79 996EMP0.68H2O=8.07EMP

SAMPLE LOCATION

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