Abstract The Edough Massif is the easternmost crystalline core of the Maghrebides that represents the African segment of the west Mediterranean Alpine belt. U-Pb zircon dating provides upper intercept ages of 595 ± 51 My and 606 ± 55 My for an orthogneiss of the lower unit and a deformed leucogranite of the upper pelitic unit, respectively. These ages suggest emplacement of the two granitoids during the Pan-African orogeny. Monazites from a paragneiss sample gave a 18 ± 5 My U-Pb age that points to a Miocene age of the high-temperature metamorphism.
AbstractAbstractAn attempt has been made at correlation between the Lower Palaeozoic Iglesiente domain of southwest Sardinia and the southern Cévennes-Montagne Noire Variscan domain of France, with particular regard to the Cambrian-hosted economic lead-zinc concentrations and the spatially associated precious-metal (Au) occurrences. Geological, lithogeochemical and lead isotope investigations led to the following conclusions. (1) The major lead-zinc deposits of Iglesiente and southern Montagne Noire have a Mississippi Valley-type origin, which involved remobilization of pre-existing Cambrian syngenetic mineralization during the Ordovician distensive 'Sardic phase'. Lead isotope evidence suggests mixed crustal sources for the Iglesiente lead. (2) The southern Cévennes stratiform Minerai Zéro of the Malines district is not syngenetic with the Cambrian host rocks. For this ore type a synto late-tectonic Variscan formation model is proposed, similar to the model indicated for the genesis of the Salsigne gold deposit in the Montagne Noire. A reevaluation of the Vigan gold occurrences, regionally associated with the Minerai Zéro economic lead-zinc bodies, is therefore suggested. (3) The newly discovered Tertiary epithermal gold province of Sardinia is genetically quite distinct from the Palaeozoic lead-zinc province of Iglesiente.
Other| January 01, 1986 La faille NW-SE du Pays de Bray, un decrochement ductile dextre hercynien; deformation a 330 Ma d'un granite a 570 Ma dans le sondage Pays de Bray 201 Philippe Matte; Philippe Matte Author U.S.T.L., U.E.R. 9, Montpellier 34060, France Search for other works by this author on: GSW Google Scholar Jean-Patrick Respaut; Jean-Patrick Respaut Author Search for other works by this author on: GSW Google Scholar Henri Maluski; Henri Maluski Author Search for other works by this author on: GSW Google Scholar Joel R. Lancelot; Joel R. Lancelot Author Search for other works by this author on: GSW Google Scholar Maurice Brunel Maurice Brunel Author Search for other works by this author on: GSW Google Scholar Author and Article Information Philippe Matte Author U.S.T.L., U.E.R. 9, Montpellier 34060, France Jean-Patrick Respaut Author Henri Maluski Author Joel R. Lancelot Author Maurice Brunel Author Publisher: Société Géologique de France First Online: 07 Mar 2017 Online Issn: 1777-5817 Print Issn: 0037-9409 GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France Bulletin de la Société Géologique de France (1986) II (1): 69–77. https://doi.org/10.2113/gssgfbull.II.1.69 Article history First Online: 07 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Philippe Matte, Jean-Patrick Respaut, Henri Maluski, Joel R. Lancelot, Maurice Brunel; La faille NW-SE du Pays de Bray, un decrochement ductile dextre hercynien; deformation a 330 Ma d'un granite a 570 Ma dans le sondage Pays de Bray 201. Bulletin de la Société Géologique de France 1986;; II (1): 69–77. doi: https://doi.org/10.2113/gssgfbull.II.1.69 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 SocietyBulletin de la Société Géologique de France Search Advanced Search 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.
