Sample: K-2500-M
| Sample ID: | K-2500-M [1] |
| Station ID: | K-2500 |
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| Eruption: | |
| Collector: | Fierstein, J. E. |
| Date sampled: | |
| Sample type 1: | Tephra Fall |
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| Text Description: | 0.8-cm-thick tephra layer that is 32 cm from the base of the 1912 Novarupta fallout layer. Pl>opx>cpx+/-tr hb; opx:cpx = 5:1. Median diameter is 0.35 mm and maximum pumice length is 8 mm. Persistant layer that stands out prominently in the section; poorly sorted and contains a distinctive assemblage of abundant yellowed plagioclase and slightly greenish mica, some soapy green amphibole, oxidized magnetite, subequal proportions of opx and cpx, and a small fraction of frothy glass shards. Dark-brown, crystal-rich, and loosely consolidated tuffaceous-looking lithic clasts also present. |
| Sample Location: |