Did Westward Subduction Cause Cretaceous–Tertiary Orogeny in the North American Cordillera?

Member Non-Member   $28.00 $40.00   View Table of Contents by Robert S. Hildebrand Year Published:  2009 Total Pages:  71 ISBN:  9780813724577 Product Code:  SPE457 This volume describes an iconoclastic model for the Cretaceous–Tertiary development of the Cordilleran orogen. Hildebrand argues that the orogeny was collisional in origin, caused by westerly-dipping subduction beneath an exotic ribbon continent named Rubia, and followed by development of an eastward-dipping subduction zone outboard of the collision zone. This model explains the origin of Laramide thick-skinned deformation, Cordilleran-type batholiths, early Tertiary metamorphic core complexes, Basin and Range extension, porphyry copper deposits, and the Pelona-Orocopia-Rand schists, and it helps resolve the longstanding Baja–British Columbia controversy.

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