Sample: 96TOK1-9

Sample ID:	96TOK1-9 ^[1]
Station ID:	96TOK1
AT Num:
Volcano:
Possible source:	Drum
Eruption:	Drum Tetlin Tephra
Collector:	Schaefer, J. R. G.
Date sampled:
Sample type 1:	Tephra Fall
Color:	salt-and-pepper
Final unit:
Text Description:	4- to 16-cm thick tephra; white with black mafics. Highly vesicular pumice with an average grain size of 250 microns. Collected from within the top 1 meter of Unit 6, which consists of organic-rich, black-gray silt. Within the silt are 1- to 3-cm-thick, organic-rich bands and fine laminations of silt and tephra. This tephra is the thickest and most coarse-grained tephra in the section; it occurs as 4- to 16-cm-thick lenses within organic-rich silt up to 30 cm below tephra 96TOK1-12. Salt-and-pepper in color. Thickest, cleanest sample of this lower, coarse, pumiceous, hornblende-rich tephra was collected for Ar/Ar analysis.
Sample Location:

References Cited

[1] Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska, 2002

Schaefer, J. R. G., 2002, Stratigraphy, major oxide geochemistry, and 40Ar/39Ar geochronology of a tephra section near Tok, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, 62 p.

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