Editors: Jeffrey A. Grambling and Barbara J. Tewksbury

This volume considers the ca. 1,500-km-wide Proterozoic orogenic belt that lies south of North America's Archean craton. In Wyoming, Colorado, Utah, New Mexico, and Arizona, the belt exposes metaigneous and metasedimentary rocks that formed between 1800 and 1600 Ma and were intruded by plutons dated at 1500–1300 Ma. The authors provide an overview of the lithology, geochemistry, geochronology, deformation, and petrology of rocks in the belt. Individual papers treat the transition from Archean to Proterozoic rocks in Wyoming; the U-Pb zircon geochronology of parts of Wyoming and Colorado; rock types and deformation in the Needle Mountains, Colorado; Middle Proterozoic plutonic rocks of the Needle Mountains Colorado, and the Sandia Mountains, New Mexico; Proterozoic metamorphism and tectonism in New Mexico; the geology of Cimarron Canyon, New Mexico; geochemistry of the Pecos greenstone belt, New Mexico; and the deformation of Proterozoic rocks in Arizona.

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Published: 5/05/1989

ISBN Number: 0813722357

Pages: 175

Product Category: EBooks