Sample: 85ARJ011Dg

Sample ID:	85ARJ011Dg ^[1]
Station ID:	85ARJ011
AT Num:
Volcano:	Edgecumbe
Possible source:	Edgecumbe
Eruption:
Collector:	Riehle, J. R.
Date sampled:
Sample type 1:	Tephra Fall
Color:
Final unit:
Text Description:	Lapilli from topmost of multiple beds, above 2R149B. Homogenous scoria having a dark grey glassy groundmass (69.9%), large plagioclase grains, some having fretted interiors (12.0%), olivine (0.9%) and clinopyroxene microphenocrysts (0.8%), macrovesicles (16.2%), and microlites.
Sample Location:

References Cited

[1] Pyroclastic deposits of the Mount Edgecumbe volcanic field, Southeast Alaska: eruptions of a stratified magma chamber, 1992

Riehle, J. R., Champion, D. E., Brew, D. A., and Lanphere, M. A., 1992, Pyroclastic deposits of the Mount Edgecumbe volcanic field, Southeast Alaska: eruptions of a stratified magma chamber: Journal of Volcanology and Geothermal Research, v. 53, n. 1, p. 117-144.

Alaska Volcano Observatory

Sample: 85ARJ011Dg

References Cited

[1] Pyroclastic deposits of the Mount Edgecumbe volcanic field, Southeast Alaska: eruptions of a stratified magma chamber, 1992