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Sample: UT491

Sample ID: UT491 [1] [2] [3] [4]
Station ID: Dawson_Cut
AT Num:
Volcano:
Possible source: Drum
Eruption:
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color: white
Final unit:
Text Description: Occus in the uppermost part of the Gold Hill Loess, close to the contact with the overlying Goldstream Formation. Tripartite character: a basal mafic mineral-rich zone, followed by a vitric layer, which is capped by reworked crystal-rich sands. Preece (1991) reports a 1- to 3-cm-thick white tephra with abundant mafic minerals overlain by reworked ash. Maximum unreworked thickness of 1.5 cm. interbedded with massive tan-colored silt.
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] Age of Sheep Creek Tephra (Pleistocene) in central Alaska from thermoluminescence dating of bracketing loess, 1996

Berger, G. W., Pewe, T. L., Westgate, J. A., and Preece, S. J., 1996, Age of Sheep Creek Tephra (Pleistocene) in central Alaska from thermoluminescence dating of bracketing loess: Quaternary Research, v. 45, n. 3, p. 263-270.

[4] Changing ideas on the identity and stratigraphic significance of the Sheep Creek tephra beds in Alaska and the Yukon Territory, northwestern North America, 2008

Westgate, J.A., Preece, S.J., Froese, D.G., Pearce, N.J.G., Roberts, R.G., Demuro, M., Hart, W.K., and Perkins, W., 2008, Changing ideas on the identity and stratigraphic significance of the Sheep Creek tephra beds in Alaska and the Yukon Territory, northwestern North America: Quaternary International, v. 178, n. 1, p. 183-209, doi: 10.1016/j.quaint.2007.03.009.