Intraplate tectonics of the western North American plate |
| |
Authors: | Robert B Smith |
| |
Institution: | Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112 U.S.A. |
| |
Abstract: | Fault-plane solutions, Cenozoic geology, and in-situ stress measurements are used to infer contemporary extension between subplates of the western North American plate. Intraplate, northwest extension is accommodated by strike-slip and oblique normal faulting along present-day seismic zones. Cenozoic volcanism, facilitated by regional extension above a subducting plate, may have spread radially outward from the northern Great Basin to form a continental triple junction with the principal arms: the central Great Basin, the Snake River Plain and a southeast-trending zone of rhyolite domes in the southern Columbia Plateau. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|