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Sample: UT900

Sample ID: UT900 [1] [2] [3] [4]
Station ID: Halfway_House
AT Num:
Volcano:
Possible source:
Eruption: Old Crow Tephra
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color: cream
Final unit:
Text Description: Sub-sample of 30-cm-thick tephra. Thick, continuous tephra bed within the Upper Gold Hill Loess overlying basement schist and about 3 m below a laminated organic silt containing SD tephra. Lower 14 cm consist of four subhorizontal fining-upward layers, which are covered by 16 cm of reworked tephra. Samples UT899 and 900 occur together as pods within UT901. The contacts between the pods and UT901 are distinct to knifesharp; however, the contacts between UT899 and UT900 are distinct and subhorizontal. UT900 is found in the upper part of the pods, is 4 cm thick, and has an intermediate color (2.5Y8/2).
Sample Location:

References Cited

[1] Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska, 1991

Preece, S. J., 1991, Tephrostratigraphy of the late Cenozoic Gold Hill loess, Fairbanks area, Alaska: University of Toronto (Canada) M.S. thesis, 186 p.

[2] Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska, 1999

Preece, S. J., Westgate, J. A., Stemper, B. A., and Pewe, T. L., 1999, Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska: Geological Society of America Bulletin, v. 111, n. 1, p. 71-90.

[3] A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory, 2011

Preece, S.J., Westgate, J.A., Froese, D.G., Pearce, N.J.G., and Perkins, W.T., 2011, A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory: Canadian Journal of Earth Sciences, v. 48, p. 1386-1418, doi: 10.1139/e10-110

[4] Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6, 2011

Preece, S.J., Pearce, N.J.G., Westgate, J.A., Froese, D.G., Jensen, B.J.L., and Perkins, W.T., 2011, Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6: Quaternary Science Reviews, v. 30, p. 2069-2099, doi:10.1016/j.quascirev.2010.04.020 .