20°55′S 68°37′W / 20.917°S 68.617°W[1] Pabellón de Inca is a volcano in Chile. Located in the Tarapacá Region, it rises 1,000 metres (3,300 ft) above the basement.[1]
Volcanic activity in the region during the Eocene had formed the Icanche Formation, about 45 million years ago. After a pause of about 33 million years, volcanic activity resumed during the Miocene and continues to the present day. The volcanism included the Uijna and Carcote ignimbrites and the stratovolcanoes on the border between Chile and Bolivia.[2]
Together with Irruputuncu and del Inca and Poruñita it is considered to be a young volcano.[3] Lava flows and craters are no longer recognizable but the volcano maintains a conical shape.[4] Other volcanoes in the area are El Rojo Sur[5] and Olca-Paruma.[6] Pabellón de Inca is not active.[1]
Pabellón de Inca, Irruputuncu and Poruñita have erupted andesite and dacite. They contain hornblende and pyroxene.[3]
The tree Polylepis tarapacana is found on Pabellón de Inca.[6]
References
edit- ^ a b c Vergara, Hernan L. "El vulcanismo superior en un sector Andino del Norte Grande de Chile" (PDF). SERNAGEOMIN (in Spanish). Archived from the original (PDF) on 2015-11-25.
- ^ Gardeweg et al. 2009, p. 1.
- ^ a b Rodríguez, I.; Roche, O.; Moune, S.; Aguilera, F.; Campos, E.; Pizarro, M. (2015-11-01). "Evolution of Irruputuncu volcano, Central Andes, northern Chile". Journal of South American Earth Sciences. 63: 385. doi:10.1016/j.jsames.2015.08.012.
- ^ Gardeweg et al. 2009, p. 2.
- ^ Wörner, Gerhard; Hammerschmidt, Konrad; Henjes-Kunst, Friedhelm; Lezaun, Judith; Wilke, Hans (2000-12-01). "Geochronology (40Ar/39Ar, K-Ar and He-exposure ages) of Cenozoic magmatic rocks from Northern Chile (18-22°S): implications for magmatism and tectonic evolution of the central Andes". Revista Geológica de Chile. 27 (2): 205–240. ISSN 0716-0208.
- ^ a b "flora de collahuasi Chile)". www.chlorischile.cl. Retrieved 2017-04-23.
Sources
edit- Gardeweg, M.; Selles, D.; Arcos, R.; Pino, H; Camacho, J.; Sprohnle, C.; Sanhueza, A.; Mont, A. (26 November 2009). "Volcanismo del Cenozoico tardío al este de Collahuasi, Región de Tarapacá, Chile" (PDF). 12th Chilean Geological Congress (in Spanish). Archived from the original (PDF) on November 25, 2015.
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