24°45′S 65°53′W / 24.750°S 65.883°W [1] Tastil volcanic complex is a volcanic group in Argentina.
Subduction off the western coast of South America has been ongoing since the Jurassic [2] and beginning with the Oligocene led to volcanism in the Puna de Atacama region, which became particularly intense 10 million years ago. [3] Some of this volcanism was focused along faults that run perpendicular/diagonal to the subduction zone such as the Calama-Olacapato-El Toro fault; the volcanoes Cerro Tuzgle and Tastil volcanic complex are among them. [4]
The Tastil volcanic complex is constructed in the Eastern Cordillera, at the margin between a basement made by Precambrian- Cambrian sediments and plutons and Tertiary sediments. [5] The complex consists of dykes and lava flows which are of Miocene age. [1] The volcanic complex has erupted potassium-rich [6] calc-alkaline rocks [7] ranging from basaltic andesite to dacite; [1] isotope ratios in the rocks indicate a strong crustal influence in the geochemistry. [8]
References
- ^ a b c Matteini et al. 2002, p. 215.
- ^ Matteini et al. 2002, p. 211.
- ^ Matteini et al. 2002, p. 212.
- ^ Matteini et al. 2002, p. 213.
- ^ Matteini et al. 2002, p. 214.
- ^ Matteini et al. 2002, p. 219.
- ^ Matteini et al. 2002, p. 218.
- ^ Matteini et al. 2002, p. 224.
Sources
- Matteini, M.; Mazzuoli, R.; Omarini, R.; Cas, R.; Maas, R. (15 February 2002). "The geochemical variations of the upper cenozoic volcanism along the Calama–Olacapato–El Toro transversal fault system in central Andes (~24°S): petrogenetic and geodynamic implications". Tectonophysics. 345 (1): 211–227. Bibcode: 2002Tectp.345..211M. doi: 10.1016/S0040-1951(01)00214-1.
 | This volcanology article is a stub. You can help Wikipedia by expanding it. |
24°45′S 65°53′W / 24.750°S 65.883°W [1] Tastil volcanic complex is a volcanic group in Argentina.
Subduction off the western coast of South America has been ongoing since the Jurassic [2] and beginning with the Oligocene led to volcanism in the Puna de Atacama region, which became particularly intense 10 million years ago. [3] Some of this volcanism was focused along faults that run perpendicular/diagonal to the subduction zone such as the Calama-Olacapato-El Toro fault; the volcanoes Cerro Tuzgle and Tastil volcanic complex are among them. [4]
The Tastil volcanic complex is constructed in the Eastern Cordillera, at the margin between a basement made by Precambrian- Cambrian sediments and plutons and Tertiary sediments. [5] The complex consists of dykes and lava flows which are of Miocene age. [1] The volcanic complex has erupted potassium-rich [6] calc-alkaline rocks [7] ranging from basaltic andesite to dacite; [1] isotope ratios in the rocks indicate a strong crustal influence in the geochemistry. [8]
References
- ^ a b c Matteini et al. 2002, p. 215.
- ^ Matteini et al. 2002, p. 211.
- ^ Matteini et al. 2002, p. 212.
- ^ Matteini et al. 2002, p. 213.
- ^ Matteini et al. 2002, p. 214.
- ^ Matteini et al. 2002, p. 219.
- ^ Matteini et al. 2002, p. 218.
- ^ Matteini et al. 2002, p. 224.
Sources
- Matteini, M.; Mazzuoli, R.; Omarini, R.; Cas, R.; Maas, R. (15 February 2002). "The geochemical variations of the upper cenozoic volcanism along the Calama–Olacapato–El Toro transversal fault system in central Andes (~24°S): petrogenetic and geodynamic implications". Tectonophysics. 345 (1): 211–227. Bibcode: 2002Tectp.345..211M. doi: 10.1016/S0040-1951(01)00214-1.
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| This volcanology article is a stub. You can help Wikipedia by expanding it. |