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Sample: UT734

Sample ID: UT734 [1] [2] [3] [4] [5]
Station ID: Sheep_Creek_Valley
AT Num:
Volcano:
Possible source: Drum
Eruption: Drum Sheep Creek Tephra-F
Collector: Pewe, T. L.
Date sampled:
Sample type 1: Tephra Fall
Color: white
Final unit:
Text Description: Occurs in the uppermost part of the Gold Hill Loess, close to the contact with the overlying Goldstream Formation. 2- to 3-cm-thick white (7.5Y8/1) layer (with a maximum thickness of 6 cm) 1.5 m below the contact of Gold Hill Loess (GHL) and the overlying retransported loess of the late Pleistocene Goldstream Formation. Microfaulted with a tripartite character: a basal dark crystal-rich sand-sized layer, followed by a much finer-grained vitric layer, which is capped by reworked crystal-rich tephra/sands.
Sample Location:
Marker
Legend
✕
Red (Warning)
Orange (Watch)
Yellow (Advisory)
Green (Normal)
Uninstrumented

200 km
100 mi
Leaflet U.S. Department of the Interior | U.S. Geological Survey | Policies

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.

[5] 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 .