Sample: Tephra 7C Arce

Sample ID:	Tephra 7C Arce ^[1]
Station ID:	Ash Station 7 Arce
AT Num:
Volcano:	Makushin
Possible source:
Eruption:
Collector:	Arce, G. N.
Date sampled:	1982-00-00
Sample type 1:	Tephra Fall
Color:
Final unit:
Text Description:	Lapilli of accessory lithics + scoria, and ash consisting of plagioclase + hypersthene + augite + hornblende. Cruciform twinning on hypersthene. Sharp lower contact, and diffuse upper contact. Brown color in the field, salt and pepper color after cleaning. 25.3 cm thick.
Sample Location:

References Cited

[1] Volcanic hazards from Makushin Volcano, northern Unalaska Island, Alaska, 1983

Arce, G. N., 1983, Volcanic hazards from Makushin Volcano, northern Unalaska Island, Alaska: University of Alaska Fairbanks unpublished M.S. thesis, Fairbanks, AK, 142 p., 2 sheets, scale unknown.

Alaska Volcano Observatory

Sample: Tephra 7C Arce

References Cited

[1] Volcanic hazards from Makushin Volcano, northern Unalaska Island, Alaska, 1983