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Sample: UT540

Sample ID: UT540 [1] [2] [3] [4] [5] [6]
Station ID: UT540
AT Num:
Volcano:
Possible source: Emmons Lake Volcanic Center
Eruption: Emmons Lake Volcanic Center C2
Collector: Westgate, J. A.
Date sampled:
Sample type 1: Tephra Fall
Color:
Final unit:
Text Description: From Westgate et al. (2000): 25-cm-thick-tephra; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. Deformed, normally graded vitric beds; sharply defined basal contact with underlying loess. Lowermost 20 cm of tephra is very pure, the uppermost 5 cm consists of reworked tephra and loess. From Preece et al. (2000): Tephra exposed 2 m above road level. Grey fine sand and silt with organics occur below the tephra, which is covered by 1.4 m of bedded grey silt with peaty organics. From Preece et al. (2011): trace amounts of brown glass; in grey fine sand and silt associated with organics; field name 2683
Sample Location:

References Cited

[1] Dawson Tephra: a prominent stratigraphic marker of late Wisconsinan age in west-central Yukon, Canada, 2000

Westgate, J. A., Preece, S. J., Kotler, Erica, and Hall, Sheila, 2000, Dawson Tephra: a prominent stratigraphic marker of late Wisconsinan age in west-central Yukon, Canada: Canadian Journal of Earth Sciences, v. 37, n. 4, p. 621-627.

[2] Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada, 2000

Preece, S. J., Westgate, J. A., Alloway, B. V., and Milner, M. W., 2000, Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada: Canadian Journal of Earth Sciences, v. 37, n. 7, p. 983-996.

[3] Emmons Lake Volcanic Center, Alaska Peninsula: source of the late Wisconsin Dawson tephra, Yukon Territory, Canada, 2003

Mangan, M. T., Waythomas, C. F., Miller, T. P., and Trusdell, F. A., 2003, Emmons Lake Volcanic Center, Alaska Peninsula: source of the late Wisconsin Dawson tephra, Yukon Territory, Canada: Canadian Journal of Earth Sciences, v. 40, n. 7, p. 925-936.

[4] 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

[5] Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6, 2011

Preece, S.J., Pearce, N.J.G., Westgate, J.A., Froese, D.G., Jensen, B.J.L., and Perkins, W.T., 2011, Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6: Quaternary Science Reviews, v. 30, p. 2069-2099, doi:10.1016/j.quascirev.2010.04.020 .

[6] The application of ICP-MS methods to tephrochronological problems, 2004

Pearce, N.J.G., Westgate, J.A., Perkins, W.T., and Preece, S.J., 2004, The application of ICP-MS methods to tephrochronological problems: Applied Geochemistry, v. 19, n. 3, p. 289-322, doi: 10.1016/S0883-2927(03)00153-7 .