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Chillahuita is a dacitic lava dome in northern Chile. It may have formed after the Pleistocene,〔 although Argon-argon dating on amphibole has indicated an age of 370,000 ±40,000 years.〔 It has an altitude of about . It formed in a single non-explosive eruption.〔 The flow moved north and eastward from the vent over a terrain with slopes of 3-4°. The flow has a surface area of with a flat circular surface containing flow folds. Steep high flanks limit the flow, which has a total volume of . It is surrounded by a pumice deposit probably from the San Pedro volcano to the northwest.〔 The eruption of the Chillahuita dome appears to have been controlled by local fault systems associated with the Altiplano-Puna volcanic complex, which also has geochemical similarity with Chillahuita lavas.〔 == See also == * Cerro Chao * Cerro Chascon-Runtu Jarita complex 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chillahuita」の詳細全文を読む スポンサード リンク
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