Sample: UA581
Sample ID: | UA581 [1] [2] [3] [4] |
Station ID: | UA581 |
AT Num: | |
Volcano: | |
Possible source: | Emmons Lake Volcanic Center |
Eruption: | Emmons Lake Volcanic Center C2 |
Collector: | Harington, C. R. |
Date sampled: | |
Sample type 1: | Tephra Fall |
Color: | |
Final unit: | |
Text Description: | 3-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. From Preece et al. (2000): tephra bed is underlain by 4.5 m of muck, overlying goldbearing creek gravels. At least 0.3 m of muck overlies tephra bed. From Preece et al. (2011): 3 cm thick; bubble-wall shards, trace amounts of brown glass; in muck overlying gold-bearing gravel; field name CR-72-32. |
Sample Location: |