Cerro Torta
| Cerro Torta | |
|---|---|
  Cerro Torta | |
| Highest point | |
| Elevation | 5,460 m (17,910 ft)[1] |
| Coordinates | 26°45′11″S 68°08′24″W / 26.753°S 68.140°W[1] |
Cerro Torta is a dacitic lava dome in Argentina. Approximately 600 metres (2,000 ft) high, it covers an area of 14 square kilometres (5.4 sq mi) with 2.8 cubic kilometres (0.67 cu mi) of rocks. Cerro Torta is about 430,000 years old[1] and is part of a recent volcanic series together with Cueros de Purulla and Cerro Blanco.[2] A seismic swarm recorded on the 23 January 2009 at Cerro Torta most likely reflects underground movement of magma, but a source in tectonic faulting close to the dome is also possible.[3] There are also underground anomalies in seismic tomography images.[4]
The dome lies in the Central Volcanic Zone of the Andes,[5] in the Ojos del Salado region. It is surrounded by Miocene and Pliocene volcanoes, but there also are Quaternary volcanoes in the area such as Falso Azufre west-southwest and El Peinado north. Peinado and several mafic monogenetic volcanoes form an alignment with Cerro Torta.[6] San Francisco Pass is nearby.[5]
References
[edit]- ^ a b c Grosse et al. 2018, p. 4.
- ^ Bertea et al. 2021, p. 286.
- ^ Mulcahy et al. 2014, pp. 1653–1654.
- ^ Liang et al. 2014, p. 557.
- ^ a b ESCALANTE FOCHI, OCHI RAMACCIOTTI & GROSSE 2017.
- ^ Grosse et al. 2018, p. 5.
Sources
[edit]- Bertea, Esteban Santiago; Báez, Walter; Bustos, Emilce; Filipovich, Rubén; Bardelli, Lorenzo; Arnosio, Marcelo; Villagrán, Agustina; Sommer, Carlos; Alfaro, Blanca; Chiodi, Agostina (5 June 2021). "Cartografía y reconstrucción de la historia eruptiva del volcán Cueros de Purulla, Puna Austral, provincia de Catamarca". Revista de la Asociación Geológica Argentina (in Spanish). 78 (2): 284–310. ISSN 1851-8249.
- ESCALANTE FOCHI, FLORENCIA; OCHI RAMACCIOTTI, MARIA; GROSSE, PABLO (2017). VOLCANISMO FÉLSICO EFUSIVO CUATERNARIO AL ESTE DEL MACIZO FALSO AZUFRE, PUNA SUR. XI Congreso Argentino de Estudiantes de Geología (in Spanish).
- Grosse, Pablo; Orihashi, Yuji; Guzmán, Silvina R.; Sumino, Hirochika; Nagao, Keisuke (May 2018). "Eruptive history of Incahuasi, Falso Azufre and El Cóndor Quaternary composite volcanoes, southern Central Andes". Bulletin of Volcanology. 80 (5): 44. doi:10.1007/s00445-018-1221-5. S2CID 134869390.
- Liang, Xiaofeng; Sandvol, Eric; Kay, Suzanne; Heit, Benjamin; Yuan, Xiaohui; Mulcahy, Patrick; Chen, Chen; Brown, Larry; Comte, Diana; Alvarado, Patricia (January 2014). "Delamination of southern Puna lithosphere revealed by body wave attenuation tomography: Attenuation tomography of southern Puna" (PDF). Journal of Geophysical Research: Solid Earth. 119 (1): 549–566. doi:10.1002/2013JB010309. S2CID 51765926.
- Mulcahy, Patrick; Chen, Chen; Kay, Suzanne M.; Brown, Larry D.; Isacks, Bryan L.; Sandvol, Eric; Heit, Benjamin; Yuan, Xiaohui; Coira, Beatriz L. (August 2014). "Central Andean mantle and crustal seismicity beneath the Southern Puna plateau and the northern margin of the Chilean-Pampean flat slab". Tectonics. 33 (8): 1636–1658. doi:10.1002/2013TC003393. hdl:11336/35932. S2CID 129847828.