A model for the development of crenulations in shear zones with applications from the southern appalachian piedmont |
| |
| Affiliation: | 1. Soil Geography and Landscape Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;2. Hydrology and Quantitative Water Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands;3. Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, CO, United States;1. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;1. National Central University, Taiwan;2. National Synchrotron Radiation Research Center, Taiwan;3. National Taiwan University, Taiwan;4. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, China |
| |
| Abstract: | Two sets of crenulations are associated with a major, Alleghanian, dextral shear zone which deformed stratigraphic and structural boundaries in the eastern Piedmont of South Carolina. Both sets of crenulation planes are oblique to the boundaries of the shear zone. The morphologies and orientations of the crenulation sets and their spatial distributions indicate that they are related to slip along foliation planes, and that they serve to compensate for displacement components of foliation slip normal to the overall movement direction in the shear zone. The crenulations act to maintain the initial thickness of the shear zone. Our evaluation of the recent literature on shear zones suggests that crenulations related to foliation slip are abundant and constitute a reliable sense of shear indicator. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
