Late Pleistocene and Holocene faulting in Lake Valencia basin, north-central Venezuela

Abstract

Research Article| June 01, 1979 Late Pleistocene and Holocene faulting in Lake Valencia basin, north-central Venezuela Carlos Schubert; Carlos Schubert 1I.V.I.C., Apartado 1827, Caracas 101, Venezuela Search for other works by this author on: GSW Google Scholar Moses Laredo Moses Laredo 2Planesa, Apartado 51635, Caracas, Venezuela Search for other works by this author on: GSW Google Scholar Author and Article Information Carlos Schubert 1I.V.I.C., Apartado 1827, Caracas 101, Venezuela Moses Laredo 2Planesa, Apartado 51635, Caracas, Venezuela Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1979) 7 (6): 289–292. https://doi.org/10.1130/0091-7613(1979)7<289:LPAHFI>2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Carlos Schubert, Moses Laredo; Late Pleistocene and Holocene faulting in Lake Valencia basin, north-central Venezuela. Geology 1979;; 7 (6): 289–292. doi: https://doi.org/10.1130/0091-7613(1979)7<289:LPAHFI>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 Two fault zones (La Cabrera and El Horno) have been detected by an acoustic reflection survey of the subsurface of Lake Valencia. These nearly parallel fault zones, which are about 15 km long, trend in an east-northeast direction and appear as normal faults in the reflection profiles. Movement along these faults occurred in late Pleistocene (El Horno fault zone) and late Pleistocene to Holocene time (La Cabrera fault zone). The amount of normal displacement is about 2.0 to 2.8 m for the late Holocene and 3.8 to 4.5 m for the entire Holocene, or calculated rates of normal separation of 0.2 to 0.3 mm/yr for late Holocene movement and 0.4 to 0.5 mm/yr movement during the entire Holocene. These fault zones are located within the La Victoria fault zone, a major structural boundary of the Caribbean Mountains. They pass through major population and industrial centers of the Lake Valencia basin. These data show that the La Victoria fault zone is an active feature, despite a low historical seismicity. 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.