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Antofalla is a large and very remote stratovolcano in Catamarca Province in northwestern Argentina. It is located on the northeastern edge of the Puna de Atacama, a high desert plateau east of the Atacama Desert. It lies just west of the Salar de Antofalla, a large playa over in length. Inca ruins can be found at the volcano's summit, offering definitive proof of numerous Pre-Columbian ascents. ==Geography== Antofalla is located west of the Salar de Antofalla. The salar basin largely predates the volcanic complex and lava flows are largely undisturbed.〔 Antofalla and Potrero Grande are neighbouring towns.〔 The volcano has a diametre of and covers a surface of . The main Antofalla cone is surrounded by smaller stratocones (the highest is over high); beginning from the northeast clockwise around the main cone Conito de Antofalla, Cerro Bayo–Cerro Onas, Cerro de la Aguada, Cerro Cajeros, Cerro Lila, Cerro Patos and Cerro Onas.〔 Antofalla is located in an area of arid climate. Minimal precipitation primarily in the summit areas allows for some minimal glaciation on the main Antofalla summit since the Pliocene-Pleistocene. The rest of the complex is well preserved with little erosion other than gullying from spring thaw waters. Some ravines bear evidence of flash flood activity, possibly related to the melting of glacier caps at the end of ice ages.〔 Today the snowline lies at about altitude.〔 Antofalla is situated above the Archibarca lineament, a northwest-southeast trending structure that also encompasses ore deposits and Galán caldera. This lineament may be responsible for the off-axis nature of volcanism in the area; the main arc is located west of Antofalla.〔 An old mine Los Jesuitas (Ag-Pb-Zn) lies on the eastern flank of the volcano.〔 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「Antofalla」の詳細全文を読む スポンサード リンク
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