Neogene development of the Swan Islands restraining-bend complex, Caribbean Sea

Abstract

Research Article| August 01, 1991 Neogene development of the Swan Islands restraining-bend complex, Caribbean Sea Paul Mann; Paul Mann 1Institute for Geophysics, University of Texas, Austin, Texas 78759 Search for other works by this author on: GSW Google Scholar Stacey A. Tyburski; Stacey A. Tyburski 2Department of Geological Sciences, University of Texas, Austin, Texas 78713 Search for other works by this author on: GSW Google Scholar Eric Rosencrantz Eric Rosencrantz 1Institute for Geophysics, University of Texas, Austin, Texas 78759 Search for other works by this author on: GSW Google Scholar Author and Article Information Paul Mann 1Institute for Geophysics, University of Texas, Austin, Texas 78759 Stacey A. Tyburski 2Department of Geological Sciences, University of Texas, Austin, Texas 78713 Eric Rosencrantz 1Institute for Geophysics, University of Texas, Austin, Texas 78759 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1991) 19 (8): 823–826. https://doi.org/10.1130/0091-7613(1991)019<0823:NDOTSI>2.3.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 Paul Mann, Stacey A. Tyburski, Eric Rosencrantz; Neogene development of the Swan Islands restraining-bend complex, Caribbean Sea. Geology 1991;; 19 (8): 823–826. doi: https://doi.org/10.1130/0091-7613(1991)019<0823:NDOTSI>2.3.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 We present SeaMARC II and multichannel seismic data describing deformation at an active restraining-bend complex formed along a left-lateral strike-slip fault in the western Caribbean Sea. The bend complex consists of three distinct strike- slip fault traces that form two right-stepping "sharp restraining bends" or "push-ups" at its western end and form a right-stepping "gentle restraining bend" at its eastern end. Deformation at the sharp restraining bends is characterized by local folding between overlapping strike-slip faults. Deformation at the much larger gentle restraining bend consists of a large anticline adjacent to a gently curving strike-slip fault. A small, active accretionary wedge forms the northern flank of the bend complex. We speculate that the 30-km-wide, right-stepping bend complex formed as a consequence of southward propagation of the Mid-Cayman spreading center during Oligocene to early Miocene time. Active faults along the southern edge of the bend complex may have formed after the initial uplift and folding of the complex, and may currently serve to straighten the strike-slip fault by "bypassing" the bend complex. 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.