1-cm-thick tephra that has a basal white bed and darker upper bed, with a distinct color contact between the two. Occurs as pods that have been microfaulted within massive grey silt (5Y6/2) with small oxidation blebs. Sharp, irregular lower contact and a diffuse upper contact; crops out about 30 cm above UT816 and UT817. Average color is 10YR7/1, the tephra is oxidized.
Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska
Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska
|StationID||Latitude||Longitude||Geologist||DateVisited||Age Info||Volcano||Eruption||Location Description||Text Description||Sample ID||Sample Type 1||Sample Type 2||Final Unit||Material||Coeff||SiO2||TiO2||Al2O3||FeOT||MnO||MgO||CaO||Na2O||K2O||P2O5||Total-majors||REF majors||METH majors||Fe2O3/Fe203T orig||FeO/FeOT orig||Volatiles csv||METH volatiles||Cs||Rb||Ba||Sr||La||Ce||Pr||Nd||Sm||Eu||Gd||Tb||Dy||Ho||Er||Tm||Yb||Lu||Y||Zr||Nb||Hf||Ta||Pb||Th||U||Sc||V||Cr||Fe||Co||Ni||Cu||Zn||Ga||Mo||As||Na||K||Ref trace1||METH trace1||Rb||Ba||Sr||La||Ce||Nd||Sm||Eu||Gd||Dy||Er||Yb||Lu||Y||Zr||Nb||Pb||Th||U||Sc||Ti||V||Cr||Ni||Cu||Zn||Ga||Ref trace2||METH trace2||Light csv||Halogen csv||other major csv||other lile csv||other ree csv||other hfse csv||other hpe csv||other tm csv||other misc csv|
|Halfway_House||64.735||-148.4594||Preece, S. J.||< 124000 ± 10000 stratigraphy; 10271; Weighted mean of four Old Crow Tephra sample glass fission-track ages. This tephra is stratigraphically above the Old Crow tephra at this location and is therefore younger.||Halfway House site: a 12-m-thick section of the Gold Hill Loess located on top of a rounded bedrock hill along the north side of the Parks Highway, ~50 km west of Fairbanks, Alaska. The exposure was created during construction of the George Parks Highway in the 1960s and is mostly comprised of the Goldstream Formation. Location coordinates from Preece and others (2011); coordinates vary slightly from those reported in Jensen and others (2011). Datum not specified, assumed to be NAD83.||1-cm-thick tephra that has a basal white bed and darker upper bed, with a distinct color contact between the two. Occurs as pods that have been microfaulted within massive grey silt (5Y6/2) with small oxidation blebs. Sharp, irregular lower contact and a diffuse upper contact; crops out about 30 cm above UT816 and UT817. Average color is 10YR7/1, the tephra is oxidized.||UT895||Tephra Fall||Cumulate||Glass||71.54||0.54||14.83||3.2||0.23||Reported analytical value of zero. Reported standard deviation value of zero. 0||2.65||4.15||2.93||93.84||56||EMP||3.2||Cl=0.14||EMP|
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