Title: Earthquake-induced clastic dikes detected by anisotropy of magnetic susceptibility
Abstract: Research Article| February 01, 2006 Earthquake-induced clastic dikes detected by anisotropy of magnetic susceptibility Tsafrir Levi; Tsafrir Levi 1Department of Geological and Environmental Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel, and Geological Survey of Israel, 30 Malkhe Yisrael Street, Jerusalem 95501, Israel, and Ramon Science Center, Ben-Gurion University of the Negev, P.O. Box 194, Mizpe Ramon 80600, Israel Search for other works by this author on: GSW Google Scholar Ram Weinberger; Ram Weinberger 2Geological Survey of Israel, 30 Malkhe Yisrael Street, Jerusalem 95501, Israel Search for other works by this author on: GSW Google Scholar Tahar Aïfa; Tahar Aïfa 3Géosciences-Rennes, CNRS UMR6118, Université de Rennes l, Campus de Beaulieu, 35042 Rennes cedex, France Search for other works by this author on: GSW Google Scholar Yehuda Eyal; Yehuda Eyal 4Department of Geological and Environmental Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel Search for other works by this author on: GSW Google Scholar Shmuel Marco Shmuel Marco 5Department of Geophysics and Planetary Sciences, Tel Aviv University, Tel Aviv 69978, Israel Search for other works by this author on: GSW Google Scholar Author and Article Information Tsafrir Levi 1Department of Geological and Environmental Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel, and Geological Survey of Israel, 30 Malkhe Yisrael Street, Jerusalem 95501, Israel, and Ramon Science Center, Ben-Gurion University of the Negev, P.O. Box 194, Mizpe Ramon 80600, Israel Ram Weinberger 2Geological Survey of Israel, 30 Malkhe Yisrael Street, Jerusalem 95501, Israel Tahar Aïfa 3Géosciences-Rennes, CNRS UMR6118, Université de Rennes l, Campus de Beaulieu, 35042 Rennes cedex, France Yehuda Eyal 4Department of Geological and Environmental Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel Shmuel Marco 5Department of Geophysics and Planetary Sciences, Tel Aviv University, Tel Aviv 69978, Israel Publisher: Geological Society of America Received: 30 Jun 2005 Revision Received: 26 Sep 2005 Accepted: 27 Sep 2005 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2006) 34 (2): 69–72. https://doi.org/10.1130/G22001.1 Article history Received: 30 Jun 2005 Revision Received: 26 Sep 2005 Accepted: 27 Sep 2005 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Tsafrir Levi, Ram Weinberger, Tahar Aïfa, Yehuda Eyal, Shmuel Marco; Earthquake-induced clastic dikes detected by anisotropy of magnetic susceptibility. Geology 2006;; 34 (2): 69–72. doi: https://doi.org/10.1130/G22001.1 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 Clastic dikes form either by passive deposition of clastic material into preexisting fissures or by fracturing and injection of clastic material during seismic shaking or passive overpressure. Because of their similar final geometry, the origin of clastic dikes is commonly ambiguous. We studied the mechanisms of clastic dike formation within the seismically active Dead Sea basin, where hundreds of clastic dikes crosscut soft rock of the late Pleistocene lacustrine Lisan Formation. We analyzed the anisotropy of magnetic susceptibility (AMS) of clastic dikes of known origin and defined characteristic AMS signatures of depositional or injection filling. We discovered that passively filled dikes, which contain brownish silt resembling local surface sediments, are characterized by an oblate AMS ellipsoid and vertical minimum susceptibility axis V3. Dikes that contain green clayey sediment connected to a mineralogically identical detrital layer of the Lisan Formation are characterized by a triaxial AMS ellipsoid, well grouped subhorizontal and parallel to the dike walls' maximum susceptibility axis V1, and subvertical intermediate susceptibility axis V2. Field evidence and AMS analysis indicate that most of these dikes were emplaced by injection inferred to be due to seismically triggered fluidization. This novel application of the AMS provides a petrofabric tool for distinguishing passively filled dikes from injection dikes and, where appropriate, for identifying the latter as seismites. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 70
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