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SAMPLE INFO : UT889
Sample ID:UT889
Station ID:Gold_Hill_II
Latitude:64.9
Longitude:-147.9
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Rewoked, appears at the 19 m level; the white, crystal-rich tephra is preserved in small loess blocks that collapsed into a gully, which was later filled with loess. Occurs as pods and in some pods, is segregated into two vitric pure white and crystal-rich parts with sharp contacts between them. Tephra and surrounding silt contacts are sharp and occasionally sheared a little and very irregular. Maximum thickness is 1 cm and maximum pod size is 9 by 1 cm.

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_II64.9-147.9Preece, S. J.< 2020000 ± 140000 stratigraphy; 996; Weighted mean average of two dates obtained on sample UT497, which is strategraphically 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 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Rewoked, appears at the 19 m level; the white, crystal-rich tephra is preserved in small loess blocks that collapsed into a gully, which was later filled with loess. Occurs as pods and in some pods, is segregated into two vitric pure white and crystal-rich parts with sharp contacts between them. Tephra and surrounding silt contacts are sharp and occasionally sheared a little and very irregular. Maximum thickness is 1 cm and maximum pod size is 9 by 1 cm.UT889Tephra FallCumulateGlass 77.45 0.24 13.48 0.89Reported analytical value of zero. Reported standard deviation value of zero. 0Reported analytical value of zero. Reported standard deviation value of zero. 0 1.54 3.87 2.44 92.5456EMP0.89Cl=0.24EMP 1.03 54 1403 655 21.82 41.4 13.5 2.5 0.67 0.19 0.79 0.13 2.8 0.5 5.82 1.85 1.47 2.81 47 56INAA
Gold_Hill_II64.9-147.9Preece, S. J.< 2020000 ± 140000 stratigraphy; 996; Weighted mean average of two dates obtained on sample UT497, which is strategraphically 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 400 m to the northeast of station Preece_1999_Gold_Hill_I. Location imprecisely georeferenced from Figure 4 in Preece et al. (1999). Rewoked, appears at the 19 m level; the white, crystal-rich tephra is preserved in small loess blocks that collapsed into a gully, which was later filled with loess. Occurs as pods and in some pods, is segregated into two vitric pure white and crystal-rich parts with sharp contacts between them. Tephra and surrounding silt contacts are sharp and occasionally sheared a little and very irregular. Maximum thickness is 1 cm and maximum pod size is 9 by 1 cm.UT889Tephra FallCumulateGlass 76.6 0.15 13.64 1.03 0.03 0.3 1.63 3.91 2.47 4792EMP1.03Cl=0.24; H2O=5.29EMP

SAMPLE LOCATION

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