Английская Википедия:Cerro de los Chenques
Шаблон:Infobox mountain Cerro de los Chenques is a monogenetic volcano in the Chubut Province,[1] Argentina, which was considered to be of Holocene ageШаблон:Sfn but was later re-dated to be of lower Pleistocene age.[2] The volcano developed on a basement formed by Mesoproterozoic and Neoproterozoic rocks and more recent volcanic and granitic formations.[3]
The volcano is source of lava flows and pyroclastics;[3] the former covered an area of about Шаблон:Convert. The cone is accompanied by hills that may be additional cones and consists of layers of lava and pyroclastic material. The cone has a breach on its northeastern side.[2] Cerro de los Chenques has erupted rocks ranging from alkali basalt to basanite, which contain phenocrysts ranging from clinopyroxene, olivine and plagioclase.Шаблон:Sfn
It is considered part of the Patagonian basaltic volcanics, which take place behind the main volcanic arcШаблон:Sfn and are considered to be backarc volcanism. Such volcanics take the form of large volcanic plateaus.[1] These volcanic are noted for their xenoliths which have been used to infer the composition of the mantle.Шаблон:Sfn
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Шаблон:Andean volcanoesШаблон:Volcanology-stub
