Possible “Caledonian” subduction under the Domnonean domain, North Armorican area

Research Article| September 01, 1977 Possible "Caledonian" subduction under the Domnonean domain, North Armorican area J. P. Lefort J. P. Lefort 1CNRS Centre Armoricain d'Etude, Structural des Socles, Institut de Géologie, de I'Université de Rennes, B.P. 25 A, 35031, Rennes-Cedex, France Search for other works by this author on: GSW Google Scholar Geology (1977) 5 (9): 523–526. https://doi.org/10.1130/0091-7613(1977)5<523:PCSUTD>2.0.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 J. P. Lefort; Possible "Caledonian" subduction under the Domnonean domain, North Armorican area. Geology 1977;; 5 (9): 523–526. doi: https://doi.org/10.1130/0091-7613(1977)5<523:PCSUTD>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 Geological and geophysical data recently gathered in the English Channel permit delineation of the main basement structures beneath the Mesozoic and Cenozoic cover. These are, from north to south, (1) a Paleozoic trough, (2) a mafic rock complex, probably ophiolitic, and (3) a Precambrian craton, with a thin Paleozoic cover restricted to some grabens. This disposition suggests the presence of a cryptic suture. Arguments based on stratigraphy (the terranes grow older to the north), structure (faults are parallel to the mafic rock complex, and horsts and grabens are found in the craton), geochronology (the pre-Hercynian intrusions show a distinct arrangement in time and space), petrography (calcalkalic intrusions and an arc of ignimbrites are found), and paleontology (two faunal realms existed during early Paleozoic time) suggest that subduction could have occurred between late Proterozoic and middle Paleozoic time under the Domnonean domain. 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.