Abra Granada
22°32′S 66°32′W / 22.533°S 66.533°WAbra Granada is a volcanic complex in the Puna de Atacama in Argentina. It is located approximately 45 kilometres (28 mi) north of Pirquitas and is composed from a lava dome, lavas and dacitic ignimbrites centering on Cerro Granada (5,700 metres (18,700 ft)) and are dated 9.8-7.8 Ma. Deposits erupted 7.9-5.0 mya by this volcano overlie the older Granada ignimbrite. Individual volcanic centres are known as Cerro Caucani, Cerro Granada and Cerro Solterío. The Pirquitas mine is part of the volcanic complex.
Other peraluminous rocks were erupted 10 mya. The complex is the likely source of the Granada Ignimbrite. The ignimbrite reaches its maximum thickness in the complex.
References
- ^ Warwick S. Board; R. Bruce Kennedy; Trevor J. Yeomans (December 23, 2011). NI 43-101 Technical Report on the Pirquitas Mine, Jujuy Province, Argentina (PDF) (Report). Silver Standard Resources Inc. p. 55. Retrieved August 22, 2015.
- ^ Caffe, P.J.; Soler, M.M.; Coira, B.L.; Onoe, A.T.; Cordani, U.G. (2008). "The Granada ignimbrite: A compound pyroclastic unit and its relationship with Upper Miocene caldera volcanism in the northern Puna". Journal of South American Earth Sciences. 25 (4): 464–484. doi:10.1016/j.jsames.2007.10.004. ISSN 0895-9811.
- ^ Peralta Arnold, Y.; Cabassi, J.; Tassi, F.; Caffe, P. J.; Vaselli, O. (15 May 2017). "Fluid geochemistry of a deep-seated geothermal resource in the Puna plateau (Jujuy Province, Argentina)". Journal of Volcanology and Geothermal Research. 338: 123. doi:10.1016/j.jvolgeores.2017.03.030. hdl:2158/1087501. ISSN 0377-0273.
- ^ "GEOQUÍMICA, FUENTES Y EVOLUCIÓN DEL MAGMATISMO NEÓGENO DE LA PUNA NORTE" (Press release) (in Spanish). RELATORIO DEL XVII CONGRESO GEOLÓGICO ARGENTIN. July 2008.
- ^ Silvia E. Singer; Rubén Somoza; Juan F. A. Vilas (2011). "APLICACIÓN DE LA ANISOTROPÍA DE SUSCEPTIBILIDAD MAGNÉTICA AL RECONOCIMIENTO DE DEPÓSITOS VO LCANICLÁSTICOS EN EL COMPLEJO VOLCÁNICO ALTIPLANO - PUNA, ANDES CENTRALES, ARGENTINA" (PDF). Tandil (in Spanish). Argentina: Latinmag Letters. Retrieved August 22, 2015.
Further reading
Caffe, P.J.; Soler, M.M.; Coira, B.L.; Onoe, A.T.; Cordani, U.G. (2008). "The Granada ignimbrite: A compound pyroclastic unit and its relationship with Upper Miocene caldera volcanism in the northern Puna". Journal of South American Earth Sciences. 25 (4): 464–484. doi:10.1016/j.jsames.2007.10.004. ISSN 0895-9811.
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