Sample: Riehle_1987_11d
| Sample ID: | Riehle_1987_11d [1] |
| Station ID: | Riehle_1987_11 |
| AT Num: | |
| Volcano: | Yantarni |
| Possible source: | |
| Eruption: | |
| Collector: | Unknown, Unknown |
| Date sampled: | |
| Sample type 1: | pyroclastic density current |
| Color: | |
| Final unit: | |
| Text Description: | Juvenile clast from pyroclastic-flow deposit. Sample of pilotaxitic to hyalopilitic lava containing plagioclase, two pyroxenes, large hornblende grains with substantial opaque rims, and rare amounts of both rounded quartz grains and large anhedral olivine grains. (Texture: Vitrophyre; groundmass <0.2 mm, foliated, plagioclase > clinopyroxene > opaque; microvesicular; hornblende reacted and oxidized. Alteration: None) |
| Sample Location: |
References Cited
[1] Petrography, chemistry, and geologic history of Yantarni volcano, Aleutian volcanic arc, Alaska, 1987
Riehle, J. R., Yount, M. E., and Miller, T. P., 1987, Petrography, chemistry, and geologic history of Yantarni volcano, Aleutian volcanic arc, Alaska: U.S. Geological Survey Bulletin 1761, 27 p., 1 sheet, scale 1:63,360.
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