Sample: UA1056
Sample ID: | UA1056 [1] [2] |
Station ID: | UA1056 |
AT Num: | |
Volcano: | |
Possible source: | Emmons Lake Volcanic Center |
Eruption: | Emmons Lake Volcanic Center C2 |
Collector: | Westgate, J. A. |
Date sampled: | |
Sample type 1: | Tephra Fall |
Color: | |
Final unit: | |
Text Description: | 25-cm-thick-tephra; consists of thin, bubble-wall shards. Orthopyroxene, plagioclase, magnetite, and ilmenite are relatively abundant in the small crystal component, which also contains minor amounts of clinopyroxene, apatite, and zircon. Deformed, normally graded vitric beds; sharply defined basal contact with underlying loess. Lowermost 20 cm of tephra is very pure, the uppermost 5 cm consists of reworked tephra and loess. |
Sample Location: |