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SAMPLE INFO : UT869
Sample ID:UT869
Station ID:Gold_Hill_I
Latitude:64.8
Longitude:-147.9
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Few cm above the HH tephra (UT825 and UT826) at this location. Occurs in most places as a variegated tephra of 2.5Y7/2 pink-cream and 2.5Y6/2 pink grey mixed together, or as lenses of pink-grey within pink-cream. Occurs within silt and in a few places, the layering in the tephra is preserved with the lowest few mm of pinker material that gradually changes upward into a pink-cream. Sharp contact, in one case horizontal, with the pink-grey tephra that is then overlain by reworked tephra. Lower contact sharp, with interfingering with loess. Tephra color contacts sharp. Upper contact with loess sharp to distinct, but sheared in some places. Deformed into pods that are linked by thin fingers of tephra and are up to 10 cm thick. Repetition in the sequence is undoubtedly due to solifluction.

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
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, 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
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). Few cm above the HH tephra (UT825 and UT826) at this location. Occurs in most places as a variegated tephra of 2.5Y7/2 pink-cream and 2.5Y6/2 pink grey mixed together, or as lenses of pink-grey within pink-cream. Occurs within silt and in a few places, the layering in the tephra is preserved with the lowest few mm of pinker material that gradually changes upward into a pink-cream. Sharp contact, in one case horizontal, with the pink-grey tephra that is then overlain by reworked tephra. Lower contact sharp, with interfingering with loess. Tephra color contacts sharp. Upper contact with loess sharp to distinct, but sheared in some places. Deformed into pods that are linked by thin fingers of tephra and are up to 10 cm thick. Repetition in the sequence is undoubtedly due to solifluction.UT869Tephra FallCumulateGlass 71.56 0.55 14.86 3.14 0.18Reported analytical value of zero. Reported standard deviation value of zero. 0 2.43 4.4 2.9 96.0856EMP3.14Cl=0.14EMP 3.95 75 761 148 20.33 48.6 24.4 6.27 1.38 1.02 4.38 0.77 6.33 0.55 7.04 2.88 14.9 4.39 82 56INAA

SAMPLE LOCATION

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