Sample: 02LWOK2-Jlbase

Sample ID:	02LWOK2-Jlbase ^[1]
Station ID:	02LWOK2
AT Num:
Volcano:	Okmok
Possible source:	Okmok
Eruption:	Okmok Middle Scoria
Collector:	Wong, L. J.
Date sampled:
Sample type 1:	Tephra Fall
Color:
Final unit:	unknown
Text Description:	Juvenile clast-rich layer. The basal J1 layer is the thickest layer and is comprised entirely of inflated fresh scoria that is commonly black. Scoria sags, reverse grading, and bomb horizons exist in J1 at the sites closest to the caldera, 6-8 km from the rim.
Sample Location:

References Cited

[1] Physical volcanology of a sub-plinian and phreatomagmatic eruption at Okmok Volcano, Alaska: implications for explosive mafic volcanism, 2004

Wong, L.J., 2004, Physical volcanology of a sub-plinian and phreatomagmatic eruption at Okmok Volcano, Alaska: implications for explosive mafic volcanism: University of Alaska Fairbanks unpublished M.S. thesis, 117 p.

Alaska Volcano Observatory

Sample: 02LWOK2-Jlbase

References Cited

[1] Physical volcanology of a sub-plinian and phreatomagmatic eruption at Okmok Volcano, Alaska: implications for explosive mafic volcanism, 2004