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Sample: UA1425

Sample ID: UA1425 [1] [2]
Station ID: Halfway_House
AT Num:
Volcano:
Possible source:
Eruption:
Collector: Preece, S. J.
Date sampled:
Sample type 1: Tephra Fall
Color:
Final unit:
Text Description: Within inorganic silt, ~5.75 m above the base of the exposure. Occurs above Old Crow tephra and a well-developed paleosol. Halfway House (HH) tephra is 25 cm below VT, while 40 cm above VT tephra a 50-cm-thick second paleosol is present. Discrete bed that can be followed continuously across the exposure. Bed is up to 3 cm thick, with diffuse contacts. Glass morphology comprised of bubble-walled and tricuspate shards with some pumice.
Sample Location:

References Cited

[1] The variegated (VT) tephra: A new regional marker for middle to late marine isotope stage 5 across Yukon and Alaska, 2011

Jensen, B.J.L., Preece, S.J., Lamothe, Michel, Pearce, N.J.G., Froese, D.G., Westgate, J.A., Schaefer, Janet, and Beget, Jim, 2011, The variegated (VT) tephra: A new regional marker for middle to late marine isotope stage 5 across Yukon and Alaska: Quaternary International, v. 246, p. 312-323, doi: 10.1016/j.quaint.2011.06.028.

[2] 150,000 years of loess accumulation in central Alaska, 2016

Jensen, B. J., Evans, M. E., Froese, D. G., and Kravchinsky, V. A., 2016, 150,000 years of loess accumulation in central Alaska: Quaternary Science Reviews, v. 135, p. 1-23.