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Latest Cretaceous to Miocene deformation events in the eastern Sierra Madre del Sur, Mexico, inferred from the geometry and age of major structures

2005; Geological Society of America; Volume: 118; Issue: 1-2 Linguagem: Inglês

10.1130/b25730.1

1943-2674

Ángel F. Nieto-Samaniego, Susana A. Alaniz-Álvarez, Gilberto Silva-Romo, M.H. Eguiza-Castro, Claudia Cristina Mendoza-Rosales,

earthquake and tectonic studies

Research Article| January 01, 2006 Latest Cretaceous to Miocene deformation events in the eastern Sierra Madre del Sur, Mexico, inferred from the geometry and age of major structures A.F. Nieto-Samaniego; A.F. Nieto-Samaniego 1Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México Search for other works by this author on: GSW Google Scholar S.A. Alaniz-Alvarez; S.A. Alaniz-Alvarez 1Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México Search for other works by this author on: GSW Google Scholar G. Silva-Romo; G. Silva-Romo 2Universidad Nacional Autónoma de México, Facultad de Ingeniería, Ciudad Universitaria, Delegación Coyoacán, 04510 México D.F., México Search for other works by this author on: GSW Google Scholar M.H. Eguiza-Castro; M.H. Eguiza-Castro 3Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México Search for other works by this author on: GSW Google Scholar C.C. Mendoza-Rosales C.C. Mendoza-Rosales 4Universidad Nacional Autónoma de México, Facultad de Ingeniería, Ciudad Universitaria, Delegación Coyoacán, 04510 México D.F., México Search for other works by this author on: GSW Google Scholar Author and Article Information A.F. Nieto-Samaniego 1Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México S.A. Alaniz-Alvarez 1Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México G. Silva-Romo 2Universidad Nacional Autónoma de México, Facultad de Ingeniería, Ciudad Universitaria, Delegación Coyoacán, 04510 México D.F., México M.H. Eguiza-Castro 3Universidad Nacional Autónoma de México, Campus Juriquilla, Centro de Geociencias, Apartado postal 1-742, 76001 Querétaro, Qro., México C.C. Mendoza-Rosales 4Universidad Nacional Autónoma de México, Facultad de Ingeniería, Ciudad Universitaria, Delegación Coyoacán, 04510 México D.F., México Publisher: Geological Society of America Received: 22 Sep 2004 Revision Received: 13 Jul 2005 Accepted: 16 Jul 2005 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2006) 118 (1-2): 238–252. https://doi.org/10.1130/B25730.1 Article history Received: 22 Sep 2004 Revision Received: 13 Jul 2005 Accepted: 16 Jul 2005 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation A.F. Nieto-Samaniego, S.A. Alaniz-Alvarez, G. Silva-Romo, M.H. Eguiza-Castro, C.C. Mendoza-Rosales; Latest Cretaceous to Miocene deformation events in the eastern Sierra Madre del Sur, Mexico, inferred from the geometry and age of major structures. GSA Bulletin 2006;; 118 (1-2): 238–252. doi: https://doi.org/10.1130/B25730.1 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 The Cretaceous-Cenozoic major lithologic units and structures of the Sierra Madre del Sur are well known. The Laramide orogeny is generally considered as the cause of the contractile structures, but the details about the migration, kinematics, and intensity of deformation are poorly known. Furthermore, the deformation events responsible for the post-Laramide strike-slip and normal faults have not been identified. In this paper, we document the migration of the deformation events that occurred in southern Mexico from Maastrichtian to Miocene time. We identify different groups of structures representing three successive deformation events, based on the geometry, age, and kinematics of tectonic structures. Deformation migrated from west to east. The first event, corresponding to the Laramide orogeny, occurred during Late Cretaceous time in the Guerrero-Morelos Platform and ended in the middle Eocene in the east within the Veracruz basin. The Oaxacan fault system, which bounds the Acatlan-Oaxacan block to the east, records Laramide shortening. From six structural sections, we interpret the juxtaposition of the Oaxacan complex against the mylonite belt of the Sierra de Juarez, with subsequent uplift of the eastern border of the Oaxacan complex and, finally, the gravitational overriding of the sedimentary cover in a radial centripetal arrangement. The second event produced strike-slip faulting during NE-SW horizontal shortening from Eocene to Oligocene time. The third event produced normal and strike-slip faults, indicating NE-SW horizontal extension during Oligocene-Miocene time. Major structures produced during these three deformation events are roughly distributed in an arcuate pattern bounding the block formed by the Acatlan and Oaxacan complexes. Based on this pattern and the relatively less deformed Mesozoic rocks within the Acatlan-Oaxacan block, we interpret that most of the deformation resulted from the impingement of this block on thinner crustal domains adjoining the block. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.