Nevado San Francisco
Mountain in Argentina / From Wikipedia, the free encyclopedia
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Nevado San Francisco, or Cerro San Francisco (Spanish pronunciation: [neˈβaðo/ˈsero saɱ fɾanˈsisko]), is a stratovolcano on the border between Argentina and Chile,[3] located just southeast of San Francisco Pass. It is considered extinct and is one of the several 6,000 m (19,700 ft) peaks in the area, of which the chief is the Ojos del Salado. It is on the border of 2 provinces: Argentinean province of Catamarca; Chilean province of Copiapo.[4][5][6]
Nevado San Francisco | |
---|---|
Highest point | |
Elevation | 6,016 m (19,738 ft) |
Prominence | 1,124 metres (3,688 ft)[1] |
Parent peak | Ojos del Salado |
Coordinates | 26°55′07.68″S 068°15′45.71″W |
Geography | |
Location | Argentina-Chile |
Parent range | Andes |
Geology | |
Age of rock | 1.34 - 1.32 million years ago |
Mountain type | Stratovolcano |
Last eruption | Unknown |
Climbing | |
First ascent | 16 December 1913 - Walther Penck (Germany)[2] |
The volcano is part of the Central Volcanic Zone of the Andes[7] and reaches an elevation of 6,016 metres (19,738 ft).[8][4][lower-alpha 1][lower-alpha 2] It is composed from andesite with the exception of basaltic cones and lava flows on the eastern side. These cones are part of the Peinado lineament and a sample was dated 200,000 years ago by argon chronology.[15]: 74–75 They are noteworthy for their olivine phenocrysts.[7] One lava flow less than one million years old reaches a length of 11 kilometres (6.8 mi).[16] The western slopes contain dacitic lava domes.[17] On the summit lie two circle-shaped constructs, of Inca or Formative period ages.[15] San Francisco was first climbed by Walther Penck (Germany) on 16 December 1913.[18]