Sample: CU1856
| Sample ID: | CU1856 [1] |
| Station ID: | Gardiner_Creek-1 |
| AT Num: | |
| Volcano: | |
| Possible source: | |
| Eruption: | Mt Churchill White River North Lobe |
| Collector: | Lynch, J. J. |
| Date sampled: | |
| Sample type 1: | Tephra Fall |
| Color: | |
| Final unit: | |
| Text Description: | The tephra contains pumiceous grains up to 1.2 mm in longest dimension. Minerals present as phenocrysts and microphenocrysts include, in order of decreasing abundance, plagioclase (~50%), magnetite, amphibole, apatite, and ilmenite. Glass compositions (normalized as anhydrous) range from about 71.5 to 74.9 wt% silicon dioxide, with a gap between about 73.4 and 74.0 wt% (Fig. 11; Table S1). Mineral abundances and glass compositions closely match those described by Preece et al. (2014) for the White River Ash, and the observed gap in silicon dioxide compositions is similar to that reported for some samples of the White River Ash |
| Sample Location: |