Millunu is an inactive volcano in Chile.[1]
Millunu is part of a complex of stratovolcanoes which straddles the border between Bolivia and Chile[2] and covers a surface area of about 60 square kilometres (23 sq mi).[1] Radiometric dates of this complex include 8.3, 7.2, 4.8 and 3.4 million years ago.[3]
The volcano is constructed by dacite and pyroxene or hornblende andesite. These form lava flows or pyroclastic flows which were exposed by a large explosive event in the western flank. The slopes are also covered with a large amount of lava flows, including a 5 kilometres (3.1 mi) broad dacite lava flow on the eastern flank.[1]
References
edit- ^ a b c Vergara 1979, p. 173.
- ^ Vergara 1979, p. 170,172.
- ^ Vergara 1979, p. 181.
External links
edit- Vergara, Hernan (1979). "El Volcanismo Superior En Un Sector Andino Del Norte Grande De Chile (20°45' a 21°00')" (PDF). biblioserver.sernageomin.cl (in Spanish). Arica: Second Chilean Geological Congress. Archived from the original (PDF) on 25 November 2015.
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