The Volcanic Evolution of Cerro Uturuncu: A High-K, Composite Volcano in the Back-Arc of the Central Andes of SW Bolivia
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50424#.VD4goFfHRK0 Author(s) Gary S. Michelfelder 1,2* , Todd C. Feeley 1 , Alicia D. Wilder 1 Affiliation(s) 1 Department of Earth Sciences, Montana State University, Bozeman, USA . 2 Department of Geography, Geology and Planning, Missouri State University, Springfield, USA . ABSTRACT Cerro Uturuncu, southwest Bolivia, is a high-K, calc-alkaline, composite volcano constructed upon extremely thick continental crust approximately 125 km behind the arc-front of the Andean Central Volcanic Zone (CVZ). Eruptive activity occurred between 890 - 271 ka in a single phase of volcanism lasting ~620,000 years. The edifice consists of a central cone and several flank vents where...