Research Article| April 01, 1960 FOOTHILLS FAULT SYSTEM, WESTERN SIERRA NEVADA, CALIFORNIA LORIN D CLARK LORIN D CLARK U. S. GEOLOGICAL SURVEY, MENLO PARK, CALIFORNIA Search for other works by this author on: GSW Google Scholar Author and Article Information LORIN D CLARK U. S. GEOLOGICAL SURVEY, MENLO PARK, CALIFORNIA Publisher: Geological Society of America Received: 23 Dec 1958 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1960, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1960) 71 (4): 483–496. https://doi.org/10.1130/0016-7606(1960)71[483:FFSWSN]2.0.CO;2 Article history Received: 23 Dec 1958 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation LORIN D CLARK; FOOTHILLS FAULT SYSTEM, WESTERN SIERRA NEVADA, CALIFORNIA. GSA Bulletin 1960;; 71 (4): 483–496. doi: https://doi.org/10.1130/0016-7606(1960)71[483:FFSWSN]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 SocietyGSA Bulletin Search Advanced Search Abstract A large fault system, here named the Foothills fault system, is the dominant structural feature of the western Sierra Nevada. The steeply dipping to vertical component faults trend northwestward through an area about 200 miles long and 30 miles wide north of 37°30′ north latitude. The faulted Paleozoic and Mesozoic rocks are overlapped by unfaulted younger rocks, and the total extent of the fault system is not known. It is probably not limited to the western Sierra Nevada. Faults are marked by belts as much as 4 miles wide of cataclastically deformed and recrystallized rocks and by truncated folds. Along one fault, Upper Jurassic rocks are juxtaposed against Paleozoic rocks for at least 100 miles. The direction of fault movement has not been determined. Net displacement on some of the component faults exceeds 3000 feet and may be measurable in miles. Major faults cut beds of Late Jurassic age and are in turn cut by plutonic rocks of probable Late Jurassic and Middle Cretaceous age. Faults that controlled deposition of quartz veins and gold ore bodies of the Mother Lode belt are apparently younger and structurally less important features superimposed on one of the fault zones of the large system. 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.
No takes yet. Share an insight, caveat, or question.
Lili Clark (1960) studied this question.