Abstract
Research Article| September 01, 1983 Geodynamic significance of Late Triassic to Early Cretaceous volcanic sequences of Vizcaino Peninsula and Cedros Island, Baja California, Mexico C. Rangin; C. Rangin 1LA 215-CNRS, Département de Géologic structurale, T. 26-O, E1, Université Pierre et Marie Curie 4 place Jussieu, 75230 Paris Cédex 05, France Search for other works by this author on: GSW Google Scholar D. Girard; D. Girard 2GIS 11, Laboratoire de Pétrographie, Universite de Bretagne occidentale Avenue Le Gorgeu, 29300 Brest Cédex, France Search for other works by this author on: GSW Google Scholar R. Maury R. Maury 2GIS 11, Laboratoire de Pétrographie, Universite de Bretagne occidentale Avenue Le Gorgeu, 29300 Brest Cédex, France Search for other works by this author on: GSW Google Scholar Author and Article Information C. Rangin 1LA 215-CNRS, Département de Géologic structurale, T. 26-O, E1, Université Pierre et Marie Curie 4 place Jussieu, 75230 Paris Cédex 05, France D. Girard 2GIS 11, Laboratoire de Pétrographie, Universite de Bretagne occidentale Avenue Le Gorgeu, 29300 Brest Cédex, France R. Maury 2GIS 11, Laboratoire de Pétrographie, Universite de Bretagne occidentale Avenue Le Gorgeu, 29300 Brest Cédex, France Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1983) 11 (9): 552–556. https://doi.org/10.1130/0091-7613(1983)11<552:GSOLTT>2.0.CO;2 Article history First Online: 01 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 C. Rangin, D. Girard, R. Maury; Geodynamic significance of Late Triassic to Early Cretaceous volcanic sequences of Vizcaino Peninsula and Cedros Island, Baja California, Mexico. Geology 1983;; 11 (9): 552–556. doi: https://doi.org/10.1130/0091-7613(1983)11<552:GSOLTT>2.0.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 Mesozoic prebatholitic terranes of central Baja California include distinct volcanic sequences associated with sediments, ranging in age from Late Triassic to Early Cretaceous. These volcanic-sedimentary sequences are parts of a large “nappe” lying on top of blueschist-bearing melanges. The magmatic parentages of basic lavas from the allochthonous units have been determined from major- and trace-element analyses of total rocks and microprobe data from their calcic clinopyroxene phenocrysts. The results show two major types of basic volcanism, linked to extensional processes (nonorogenic tholeiites) and to compressional processes (orogenic tholeiites), respectively. This study documents a complex Mesozoic geodynamic evolution for this area before nappe emplacement during the Albian. On the basis of these data, the Late Triassic to Albian geologic history of this area is interpreted in terms of two successive episodes of marginal oceanic basin development, followed, respectively, by subduction and collision processes. 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.
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