"Reclus volcano, the source of several Holocene Patagonian tephra layers, was recognized to be an independent volcanic edifice only in 1987. The 1000-m-high volcano consists of a large dacitic pyroclastic cone with a crater about 1 km in diameter. As many as a half dozen tephra layers overlie a peat layer dated at 3780 years before present. The volcano is being actively eroded by the Amalia Glacier, which drains off the Patagonian Icecap. Later work revealed evidence for historical eruptions in the 19th and early 20th centuries."  -Smithsonian Volcano Archive
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