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Modeling deformation and salt tectonics in the eastern Mediterranean Ridge accretionary wedge

2004; Geological Society of America; Volume: 116; Issue: 7 Linguagem: Inglês

10.1130/b25309.1

1943-2674

E. Costa, Angelo Camerlenghi, Alina Polonia, Calvin Cooper, P. Fabretti, A. Mosconi, P. Murelli, Marco Romanelli, Lorenzo Sormani, N. Wardell,

Seismic Imaging and Inversion Techniques

Research Article| July 01, 2004 Modeling deformation and salt tectonics in the eastern Mediterranean Ridge accretionary wedge E. Costa; E. Costa 1Dipartimento di Scienze della Terra, Parco Area delle Scienze 157/A, 43100 Parma, Italy Search for other works by this author on: GSW Google Scholar A. Camerlenghi; A. Camerlenghi 2Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy Search for other works by this author on: GSW Google Scholar A. Polonia; A. Polonia 3Istituto di Geologia Marina, CNR, Via Gobetti 101, 40129, Bologna, Italy Search for other works by this author on: GSW Google Scholar C. Cooper; C. Cooper 4Eni—Agip Division, Via Emilia 1, 20097 San Donato Milanese (MI), Italy Search for other works by this author on: GSW Google Scholar P. Fabretti; P. Fabretti 5Istituto di Geologia Marina, CNR, Via Gobetti 101, 40129, Bologna, Italy Search for other works by this author on: GSW Google Scholar A. Mosconi; A. Mosconi 6Eni—Agip Division, Via Emilia 1, 20097 San Donato Milanese (MI), Italy Search for other works by this author on: GSW Google Scholar P. Murelli; P. Murelli 7Dipartimento di Scienze della Terra, Parco Area delle Scienze 157/A, 43100 Parma, Italy Search for other works by this author on: GSW Google Scholar M. Romanelli; M. Romanelli 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy Search for other works by this author on: GSW Google Scholar L. Sormani; L. Sormani 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy Search for other works by this author on: GSW Google Scholar N. Wardell N. Wardell 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy Search for other works by this author on: GSW Google Scholar Author and Article Information E. Costa 1Dipartimento di Scienze della Terra, Parco Area delle Scienze 157/A, 43100 Parma, Italy A. Camerlenghi 2Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy A. Polonia 3Istituto di Geologia Marina, CNR, Via Gobetti 101, 40129, Bologna, Italy C. Cooper 4Eni—Agip Division, Via Emilia 1, 20097 San Donato Milanese (MI), Italy P. Fabretti 5Istituto di Geologia Marina, CNR, Via Gobetti 101, 40129, Bologna, Italy A. Mosconi 6Eni—Agip Division, Via Emilia 1, 20097 San Donato Milanese (MI), Italy P. Murelli 7Dipartimento di Scienze della Terra, Parco Area delle Scienze 157/A, 43100 Parma, Italy M. Romanelli 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy L. Sormani 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy N. Wardell 8Istituto Nazionale di Oceanografia e di Geofisica Sperimentale—OGS, Borgo Grotta Gigante 42/c, I-34010 Sgonico (TS), Italy Publisher: Geological Society of America Received: 20 Dec 2002 Revision Received: 30 Oct 2003 Accepted: 13 Nov 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2004) 116 (7-8): 880–894. https://doi.org/10.1130/B25309.1 Article history Received: 20 Dec 2002 Revision Received: 30 Oct 2003 Accepted: 13 Nov 2003 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 E. Costa, A. Camerlenghi, A. Polonia, C. Cooper, P. Fabretti, A. Mosconi, P. Murelli, M. Romanelli, L. Sormani, N. Wardell; Modeling deformation and salt tectonics in the eastern Mediterranean Ridge accretionary wedge. GSA Bulletin 2004;; 116 (7-8): 880–894. doi: https://doi.org/10.1130/B25309.1 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 SocietyGSA Bulletin Search Advanced Search Abstract This study addresses some aspects of the kinematics and structural setting of the Mediterranean Ridge accretionary complex, particularly those aspects related to the occurrence and distribution of Messinian evaporites. The approach is by (1) identification of the geometry of deformation through reprocessing of existing multichannel seismic reflection data from the Levantine Basin, aimed at the definition of the velocity field and depth imaging; (2) physical modeling in the laboratory, aimed at the study of the kinematics of shortening of sedimentary sequences detaching on viscous décollements; and (3) comparison between the results of the two approaches.We conclude that the thick Messinian sequence of the Levantine Basin is composed primarily of salt, so that the entire evaporitic sequence can be expected to behave as a viscous material. It follows that the main detachment of the post-Messinian wedge is located at the base of the Messinian salt layer. A viscous (salt) décollement would produce thrusting trending normal to the shortening direction, but boundary conditions affect structural trends even more than stress and/or movement direction. Both strain partitioning and the formation of major strike-slip faults within the post-Messinian wedge are prevented by the high angle of convergence between the African and Aegean plates as well as by the low intraplate friction. In addition, we show that curved and anastomosing thrust fronts are reflected in the cobblestone topography of the Mediterranean Ridge. We finally postulate that extension may occur in the central Mediterranean Ridge as a result of the geometry of the plate boundaries. This extension is considered as a possible cause of mud volcanism and mud diapirism. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.