Sample: UA1781

Sample ID:	UA1781 ^[1] ^[2] ^[3]
Station ID:	AL-4
AT Num:
Volcano:
Possible source:	Aniakchak
Eruption:	Aniakchak Tephra D/Pleistocene
Collector:	Kaufman, D. S.
Date sampled:
Sample type 1:	Tephra Fall
Color:
Final unit:
Text Description:	Tephra D (in Kaufman et al. 2003), located 332 cm bottom depth in core (tube depth, not tephra-free depth); 8 cm thick; mix of blocky and frothier pumice, some crystal-rich. Major and minor minerals: plagioclase, orthopyroxene, Fe-Ti oxides. Trace minerals: clinopyroxene, amphibole (?).
Sample Location:

References Cited

[1] Late Quaternary tephrostratigraphy, Ahklun Mountains, SW Alaska, 2012

Kaufman, D.S., Jensen, B.J.L., Reyes, A.V., Schiff, C.J., Froese, D.G., and Pearce, N.J.G., 2012, Late Quaternary tephrostratigraphy, Ahklun Mountains, SW Alaska: Journal of Quaternary Science, v. 27, n. 4, p. 344-359, doi:10.1002/jqs.1552 .

[2] A 33,000 year record of environmental change from Arolik Lake, Ahklun Mountains, Alaska, 2003

Kaufman, D.S., Hu, F.S., Briner, J.P., Werner, Al, Finney, B.P., and Gregory-Eaves, Irene, 2003, A 33,000 year record of environmental change from Arolik Lake, Ahklun Mountains, Alaska: Journal of Paleolimnology, v. 30, p. 343-362.

[3] Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years, 2016

Davies, L. J., Jensen, B. J., Froese, D. G., and Wallace, K. L., 2016, Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years: Quaternary Science Reviews, v. 146, p. 28-53.

Alaska Volcano Observatory

Sample: UA1781

References Cited

[1] Late Quaternary tephrostratigraphy, Ahklun Mountains, SW Alaska, 2012

[2] A 33,000 year record of environmental change from Arolik Lake, Ahklun Mountains, Alaska, 2003

[3] Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years, 2016