Authors: Norman D. Newell, John Chroni c, and Thomas G. Roberts
Upper Paleozoic sedimentary rocks are widely distributed and probably more fully represented in the Peruvian Andes than in other parts of South America. A reconnaissance study of these rocks and their fossils reported here supplies new and important information on late Paleozoic history of the western part of South America. Continental plant-bearing strata of Mississippian age are described, and their known distribution is indicated. Great sequences of marine Pennsylvanian and Permian strata were studied over a large area. The Pennsylvanian is represented mainly by the Atokan stage, lower middle Pennsylvanian, and the Permian belongs chiefly to the Wolfcampian, or lower Permian. Limited areas of middle Permian, Leonardian rocks are also reported. There is no known evidence for glaciation during the late Paleozoic in Peru…
Published: 11/18/1953
Pages: 276
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