Top Qs
Timeline
Chat
Perspective
Tastil volcanic complex
Volcanic group in Argentina From Wikipedia, the free encyclopedia
Remove ads
24°45′S 65°53′W[1] Tastil volcanic complex is a volcanic group in Argentina.
 | This article relies largely or entirely on a single source. (July 2024) |
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]
Remove ads
References
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads