Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8908854 | Tectonophysics | 2017 | 62 Pages |
Abstract
Some spatially restricted deposits can be attributed to the evolution of fault-zone geometric complexities. However, the deformation events at ca. 2.6Â Ma and 0.7Â Ma are recorded regionally along ~Â 80Â km of the SAF through Coachella Valley, covering an area much larger than mapped fault-zone irregularities, and thus require regional explanations. We therefore conclude that late Cenozoic deformation and sedimentation along the SAF in Coachella Valley has been controlled by a combination of regional tectonic drivers and local deformation due to dextral slip through fault-zone complexities. We further propose a kinematic link between the ~Â 2.6-2.3Â Ma angular unconformity and a previously documented but poorly dated reorganization of plate-boundary faults in the northern Gulf of California at ~Â 3.3-2.0Â Ma. This analysis highlights the potential for high-precision chronologies in deformed terrestrial deposits to provide improved understanding of local- to regional-scale structural controls on basin formation and deformation along an active transform margin.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
James C. McNabb, Rebecca J. Dorsey, Bernard A. Housen, Cassidy W. Dimitroff, Graham T. Messé,