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Sample: UT869

Sample ID: UT869 [1] [2] [3] [4]
Station ID: Gold_Hill_I
AT Num:
Volcano:
Possible source:
Eruption:
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color: multiple
Final unit:
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.
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] Late Pliocene Dawson Cut forest bed and new tephrochronological findings in the Gold Hill Loess, east-central Alaska, 2009

Pewe, T.L., Westgate, J.A., Preece, S.J., Brown, P.M., and Leavitt, S.W., 2009, Late Pliocene Dawson Cut forest bed and new tephrochronological findings in the Gold Hill Loess, east-central Alaska: Geological Society of America Bulletin, v. 121, n. 1-2, p. 294-320, doi: 10.1130/B26323.1 .

[4] 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