Sample: 72-PCL-68
| Sample ID: | 72-PCL-68 [1] |
| Station ID: | 72-PCL-68 |
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| Eruption: | |
| Collector: | Lowe, P. C. |
| Date sampled: | 1972-00-00 |
| Sample type 1: | Lava |
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| Text Description: | Wrangell Lava. Andesite and basaltic andesite flows - Extensive sequence of thin to medium flows with oxidized dark-red scoriaceous tops and bottoms. May include younger thin basalt flows from local eruptive centers. Rocks are gray to dark gray with small (<1 mm) phenocrysts of olivine and minor hypersthene in a fine-grained intergranular to intersertal matrix of plagioclase and augite. Locally, rocks are altered to chlorite and clay minerals. Sources probably to the west in the Nabsena B-6 quadrangle. Rocks distinguished from similar unit QTau by predominance of olivine over hypersthene and by absence of pyroclastic beds |
| Sample Location: |