Structural Analysis of the Horn Area, Bighorn Mountains, Wyoming

Abstract

Research Article| February 01, 1967 Structural Analysis of the Horn Area, Bighorn Mountains, Wyoming JOHN C PALMQUIST JOHN C PALMQUIST Dept. Geology, Monmouth College, Monmouth, Illinois Search for other works by this author on: GSW Google Scholar Author and Article Information JOHN C PALMQUIST Dept. Geology, Monmouth College, Monmouth, Illinois Publisher: Geological Society of America Received: 12 Jun 1963 Revision Received: 29 Mar 1965 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1967, 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 (1967) 78 (2): 283–298. https://doi.org/10.1130/0016-7606(1967)78[283:SAOTHA]2.0.CO;2 Article history Received: 12 Jun 1963 Revision Received: 29 Mar 1965 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JOHN C PALMQUIST; Structural Analysis of the Horn Area, Bighorn Mountains, Wyoming. GSA Bulletin 1967;; 78 (2): 283–298. doi: https://doi.org/10.1130/0016-7606(1967)78[283:SAOTHA]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 Blocklike uplift of Precambrian metamorphic rocks during Laramide deformation resulted in the formation of an asymmetric faulted mountain mass extending south from the central Bighorn unit.The internal structure of the metamorphic rocks is dominated by a complex anticline plunging to the north-northwest as demonstrated by foliation, lineation, relationship of minor folds, and distribution of mapped units. The geometry of the fold is elucidated by statistical analysis of the structural elements and tectonic profile construction, which reveal a closed, slightly overturned cylindrical anticline with planar limbs. Measured lineation corresponds to the axial line, as determined from statistical analysis of foliation data, and is, therefore, b-lineation.Structures in overlying sedimentary rocks resulted from draping over active basement blocks. The blocks are bounded by the Horn and Tensleep faults. The Horn fault parallels foliation in the Precambrian rocks; whereas, the Tensleep fault is a rejuvenated Precambrian fault showing that the structural gram of the basement influenced later deformation. 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.