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Sample: UT1052

Sample ID: UT1052 [1] [2] [3]
Station ID: Ash_Bend
AT Num:
Volcano:
Possible source: Drum
Eruption:
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color: white
Final unit:
Text Description: Conspicuous, white tephra bed, up to 3 cm thick, near base of silty beds that overly the base of channel cut into the upper glaciofluvial gravels at the head of a gulley located at the downstream end of the section. Trace amounts of a low vesicular glass and bubble-wall shards are present. Dominated by plagioclase and hornblende with lesser amounts of ilmenite and magnetite. Hypersthene is scarce and slightly- to nonpleochroic. Apatite, clinopyroxene and quartz occur in trace quantities. From Preece et al. (2011): pumice, rare blocky shards, and rare bubble-wall shards; in silt of sedimentary fill incised into the Reid glacial drift; 90 cm below Sheep Creek-A (UT1051). Sample collected by B. Alloway, 1990.
Sample Location:

References Cited

[1] 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.

[2] 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

[3] Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon by tephrochronology, 2001

Westgate, J.A., Preece, S.J., Froese, D.G., Walter, R.C., Sandhu, A.S., and Schweger, C.E., 2001, Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon by tephrochronology: Quaternary Research, v. 56, n. 3, p. 335-348, doi: 10.1006/qres.2001. 2274 .