Sample: Riehle_1987_AN_6bg
| Sample ID: |
Riehle_1987_AN_6bg [1] |
| Station ID: |
Riehle_1987_AN_6 |
| AT Num: |
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| Volcano: |
Aniakchak |
| Possible source: |
Aniakchak |
| Eruption: |
Aniakchak CFE II |
| Collector: |
Riehle, J. R. |
| Date sampled: |
|
| Sample type 1: |
Tephra Fall |
| Color: |
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| Final unit: |
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| Text Description: |
Black glass shards handpicked from the sample for microanalysis.15-22 cm thick deposit, reworked. Clear to pale gray glass and fibrous white pumice; trace pale grey to medium brown scoriaceous glass; rare fine black fragments may be black glass shards; estimated 98% glass, remainder is plagioclase and pyroxene>amphibole>opaquesa=apatite=-zircon (?). |
| Sample Location: |
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References Cited
Riehle, J. R., Meyer, C. E., Ager, T. A., Kaufman, D. S., and Ackerman, R. E., 1987, The Aniakchak tephra deposit, a late Holocene marker horizon in western Alaska: in Hamilton, T. D. and Galloway, J. P., (eds.), Geologic studies in Alaska by the U.S. Geological Survey during 1986, U.S. Geological Survey Circular C 0998, p. 19-22.
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