Sample: J63

Sample ID:	J63 ^[1]
Station ID:	Jan_Lake
AT Num:
Volcano:
Possible source:	Churchill, Mt
Eruption:
Collector:	Unknown, Unknown
Date sampled:
Sample type 1:	Tephra Fall
Color:
Final unit:
Text Description:	Clear, highly vesicular, blocky and pumiceous shards that form a discreet bed < 1mm thick. Glass chemistry is composed of a rhyolitic population with K2O values higher than other tephras observed in Jan Lake.
Sample Location:

References Cited

[1] Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA, 2017

Monteath, A.J., van Hardenbroek, M., Davies, L.J., Froese, D.G., Langdon, P.G., Xu, X., and Edwards, M.E., 2017, Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA: Quaternary Research, v. 88, p. 1-10.

Alaska Volcano Observatory

Sample: J63

References Cited

[1] Chronology and glass chemistry of tephra and cryptotephra horizons from lake sediments in northern Alaska, USA, 2017