Sample: Y-124
| Sample ID: | Y-124 [1] |
| Station ID: | Y-124 |
| AT Num: | |
| Volcano: | Kaguyak |
| Possible source: | |
| Eruption: | Kaguyak CFE |
| Collector: | Fierstein, J. E. |
| Date sampled: | 2000-00-00 |
| Sample type 1: | pyroclastic density current |
| Color: | |
| Final unit: | |
| Text Description: | Kaguyak Ignimbrite. thick light grey ignimbrite exposure with 3 good PCZ's and 2 weak ones. Mostly massive, except for 4 50-60-cm PCZ's in upper half. Most of the ignimbrite is clastrich with many 1-2-cm dacite pumice clasts and many small lithics. Ignimbrite base is especially rich in larger lithics. Top 1.5 m of exposure may be a secondary pyroclastic flow; it has a very fine 10-cmthick vitric silt layer between it and the main ignimbrite that trapped fumarolic alteration below it. This horizon includes lithics and is locally red-rusty altered. Exposed thickness ~10 m. 4-6 PCZs: 0.5 to 0.6 m. See text for MC and ML. Pumice clasts: mostly dacite, minor scoria, banded pumice present. Lithic clasts: mostly grey dacite lava. |
| Sample Location: |
References Cited
[1] Kaguyak dome field and its Holocene caldera, Alaska Peninsula, 2008
Fierstein, Judy, and Hildreth, Wes, 2008, Kaguyak dome field and its Holocene caldera, Alaska Peninsula: Journal of Volcanology and Geothermal Research, v. 177, n. 2, p. 340-366, doi:10.1016/j.jvolgeores.2008.05.016 .
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