Sample: 72-PCL-83
| Sample ID: | 72-PCL-83 [1] | ||||||||||
| Station ID: | 72-PCL-83 | ||||||||||
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| 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: |
     Akutan Aniakchak Atka volcanic complex Augustine Cleveland Dutton Edgecumbe Fisher Gareloi Great Sitkin Griggs Iliamna Isanotski Kanaga Katmai Little Sitkin Mageik Makushin Martin Novarupta Pavlof Redoubt Semisopochnoi Shishaldin Snowy Spurr Takawangha Tanaga Trident Ugashik-Peulik Ukinrek Maars Veniaminof Westdahl Wrangell Legend ✕
30 km 20 mi |
