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Sample: UT738

Sample ID: UT738 [1] [2] [3] [4] [5]
Station ID: Ester_II
AT Num:
Volcano:
Possible source:
Eruption:
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color: white
Final unit:
Text Description: Pods up to 15 cm thick. Occurs as gritty, discontinuous pods with a maximum size of 30 by 15 cm. Many silt stringers occur within the ash, giving it a greyish color. Cleaner ash pods are white in color. Mafic minerals are uniformly distributed through the pods, and locally charcoal, peat blebs, and Fe-oxide nodules are found. Sharp upper and lower contacts between the larger pods and the loess, whereas small pods and pods with many silt stringers have more diffuse contacts. The edges of the pods commonly interfinger with a greyish silt that is restricted to the immediate vicinity of the pods and contains charcoal layers. The tephra is subhorizontal over 1.5 m and repeats vertically over 14 cm due to solifluction.
Sample Location:
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7
12
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Uninstrumented
Geologic Sites

5 km
3 mi
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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] The Dawson Cut Forest Bed in the Fairbanks area, Alaska, is about two million years old, 2003

Westgate, J. A., Preece, S. J., and Pewe, T. L., 2003, The Dawson Cut Forest Bed in the Fairbanks area, Alaska, is about two million years old: in Westgate, J. A., (ed.), Special issue dedicated to Troy Pewe, Quaternary Research, v. 60, n. 1, p. 2-8.

[4] 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 .

[5] A 3-my record of Pliocene-Pleistocene loess in interior Alaska, 1990

Westgate, J.A., Stemper, B.A., and Pewe, T.L., 1990, A 3-my record of Pliocene-Pleistocene loess in interior Alaska: Geology, v. 18, p. 858-861.