Low-angle faulting and the origin of Kettle dome, a metamorphic core complex in northeastern Washington

Abstract

Research Article| August 01, 1981 Low-angle faulting and the origin of Kettle dome, a metamorphic core complex in northeastern Washington Brady P. Rhodes; Brady P. Rhodes 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98105 Search for other works by this author on: GSW Google Scholar Eric S. Cheney Eric S. Cheney 1Department of Geological Sciences, AJ-20, University of Washington, Seattle, Washington 98105 Search for other works by this author on: GSW Google Scholar Geology (1981) 9 (8): 366–369. https://doi.org/10.1130/0091-7613(1981)9<366:LFATOO>2.0.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Brady P. Rhodes, Eric S. Cheney; Low-angle faulting and the origin of Kettle dome, a metamorphic core complex in northeastern Washington. Geology 1981;; 9 (8): 366–369. doi: https://doi.org/10.1130/0091-7613(1981)9<366:LFATOO>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The low-angle, eastward-dipping Kettle River fault has been mapped for >45 km along the eastern flank of Kettle dome. The fault juxtaposes lower-plate, mylonitic, sillimanite-grade metamorphic rocks against upper-plate, greenschist-grade metamorphic rocks and unmetamorphosed but folded Eocene volcanic and sedimentary rocks. The geometry of high-angle listric(?) faults, which cut upper-plate rocks, suggests that the upper plate moved eastward relative to the lower plate. Cataclasis and chloritization spatially related to the Kettle River fault cut the mylonitic foliation in the lower plate, indicating that the gneisses in the lower plate were not part of a hot, mobile diapir during at least the latest stage of their "emplacement." The similarity of the Kettle River fault to the folded Newport fault along the northern contact of Spokane dome suggests that these faults postdate the mylonitization of the lower plate but predate regional doming. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.