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Microplate rotation in northeast Brazil during South Atlantic rifting: Analogies with the Sinai microplate

1999; Geological Society of America; Volume: 27; Issue: 12 Linguagem: Inglês

10.1130/0091-7613(1999)027 2.3.co;2

1943-2682

Peter Szatmari, E. J. Milani,

Paleontology and Stratigraphy of Fossils

Research Article| December 01, 1999 Microplate rotation in northeast Brazil during South Atlantic rifting: Analogies with the Sinai microplate Peter Szatmari; Peter Szatmari 1Petrobras Research Center (CENPES), Rio de Janeiro 21949-900, Brazil Search for other works by this author on: GSW Google Scholar Edison J. Milani Edison J. Milani 1Petrobras Research Center (CENPES), Rio de Janeiro 21949-900, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information Peter Szatmari 1Petrobras Research Center (CENPES), Rio de Janeiro 21949-900, Brazil Edison J. Milani 1Petrobras Research Center (CENPES), Rio de Janeiro 21949-900, Brazil Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (12): 1115–1118. https://doi.org/10.1130/0091-7613(1999)027 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 Peter Szatmari, Edison J. Milani; Microplate rotation in northeast Brazil during South Atlantic rifting: Analogies with the Sinai microplate. Geology 1999;; 27 (12): 1115–1118. doi: https://doi.org/10.1130/0091-7613(1999)027 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 The Early Cretaceous northeast Brazilian Sergipe microplate, formed at the northern end of the South Atlantic rift between South America and Africa, closely resembles the modern Sinai microplate at the northern end of the Red Sea in size, shape, and relative motion. Both formed where east-northeast–trending transverse shear zones arrested northward rift propagation, causing the Tucano-Recôncavo and Gulf of Suez rifts to fail and be replaced by northeast-trending leaky transforms (Sergipe-Alagoas and Dead Sea transforms) as the new paths of continental breakup. Bordered by the failed rift, the leaky transform, and the transverse shear zone, both microplates were rotated counterclockwise by drag along their eastern transform margins. Rotation thrust the edge of the Sergipe microplate over part of its northern border, creating the Arcoverde thrust wedge. The northwest-trending Vaza-Barris fault sheared the microplate, transferring the rift and evaporite sequence from the Sergipe-Alagoas to the Gabon continental margin. In Albian time, heating of the lithosphere in the Cabo igneous province near Recife permitted the South Atlantic rift to propagate across the Arcoverde thrust wedge, completing continental breakup. 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.