Research Article| April 01, 1970 The Palestina Fault, Colombia TOMAS FEININGER TOMAS FEININGER U.S. Geological Survey, Medellin, Colombia AUTHOR'S PRESENT ADDRESS: DEPARTMENT OF MINERAL SCIENCES, SMITHSONIAN INSTITUTION, WASHINGTON, D.C. 20560 Search for other works by this author on: GSW Google Scholar Author and Article Information TOMAS FEININGER AUTHOR'S PRESENT ADDRESS: DEPARTMENT OF MINERAL SCIENCES, SMITHSONIAN INSTITUTION, WASHINGTON, D.C. 20560 U.S. Geological Survey, Medellin, Colombia Publisher: Geological Society of America Received: 15 Aug 1969 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1970, 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 (1970) 81 (4): 1201–1216. https://doi.org/10.1130/0016-7606(1970)81[1201:TPFC]2.0.CO;2 Article history Received: 15 Aug 1969 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation TOMAS FEININGER; The Palestina Fault, Colombia. GSA Bulletin 1970;; 81 (4): 1201–1216. doi: https://doi.org/10.1130/0016-7606(1970)81[1201:TPFC]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 The Palestina fault is an inactive right-lateral wrench fault more than 350 km long in the largely metamorphic and igneous terrain of the northern Central Cordillera of the Colombian Andes. It strikes north to north-northeast, nearly parallel to the regional Andean structures. Much of the fault is followed by straight canyons 50 to 600 m deep. A zone of breccia and mylonite less than 50 m thick marks the fault. Rock is intensely fractured within 50 m of this breccia zone. Deformational effects of the Palestina include large fault-block slivers of megabreccia and drag "tails" that contain some allochthonous material. A gravity profile across the Palestina shows no associated anomaly.Horizontal displacement on the Palestina of 27.7 km is well documented because the fault has offset ten unique lithologic, metamorphic, and structural features that have been mapped on both blocks. These offset features are: marble, quartzite, feldspathic and aluminous gneiss, diorite, zones of diorite mixed with Precambrian gneiss, hornblende gabbro, Cretaceous shale, metamorphic isograds, a major wrench fault, and several minor faults.The Palestina fault is only one of several recently recognized wrench faults in the northern Central Cordillera, and its documentation should call attention to the possible importance of these features in the tectonics of the area.Published analyses of wrench-fault tectonics in northern Colombia and Venezuela assume a genetic relationship between all the wrench faults: they originated in response to a single unchanging regional stress system. A more meaningful analysis might result from the individual study of smaller geographic areas and consideration of the relative ages of the wrench faults. 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.