%0 Thesis %B Geology %D 1998 %T Geology of the Orcopampa 30 minute quadrange, southern Peru, with special focus on the evolution of the Chinchón and Huayta calderas %A Swanson, Kirk E. %Y Noble, Donald C. %C Reno, NV %I University of Nevada, Reno %K colca cotahuasi arequipa %P 316 p. %V Ph.D. %9 Unpublished Ph.D. Dissertation