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<title lang=en>Ecological succession evidence in an Upper Jurassic coral reef system (Izwarn section, High Atlas, Morocco)</title>
<creator>Olivier, Nicolas</creator>
<creator>Martin-Garin, Bertrand</creator>
<creator>Colombie, Claude</creator>
<creator>Cornee, Jean-Jacques</creator>
<creator>Giraud, Fabienne</creator>
<creator>Schnyder, Johann</creator>
<creator>Kabbachi, Belkacem</creator>
<creator>Ezaidi, Karim</creator>
<contributor>Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE) ; École normale supérieure - Lyon (ENS Lyon) - Université Claude Bernard Lyon 1 (UCBL) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD) - Aix Marseille Université (AMU) - Collège de France (CdF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bassins ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Sciences de la Terre (ISTerre) ; Université Joseph Fourier - Grenoble 1 (UJF) - Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR) - Institut national des sciences de l'Univers (INSU - CNRS) - Institut de recherche pour le développement [IRD] : UR219 - PRES Université de Grenoble - Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut des Sciences de la Terre de Paris (iSTeP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Faculté des Sciences, Université Ibn Zohr, Agadir ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 0016-6995</source>
<source>Geobios</source>
<publisher>Elsevier Masson</publisher>
<identifier>hal-00795549</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00795549</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00795549</source>
<source>Geobios, Elsevier Masson, 2012, 45 (6), pp.555-572. 〈10.1016/j.geobios.2012.05.002〉</source>
<identifier>DOI : 10.1016/j.geobios.2012.05.002</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geobios.2012.05.002</relation>
<language>en</language>
<subject lang=en>Reef</subject>
<subject lang=en>Scleractinian corals</subject>
<subject lang=en>Microbialites</subject>
<subject lang=en>Ecological succession</subject>
<subject lang=en>Upper Jurassic</subject>
<subject lang=en>Morocco</subject>
<subject>[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces, environment</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Late Jurassic coral reefs are present in the Western High Atlas of Morocco along the eastern paleomargin of the young Atlantic Ocean. The Izwarn section shows two reef units made of scleractinian corals and microbialites, included in a progradational shallowing-upward succession. Changes in reefal composition and structure observed in a ca. 50 cm-thick interval at the base of the reef unit 1 are interpreted to represent the first well-documented ecological succession in Late Jurassic reefs. Bioclastic deposits, sparse and poorly diversified corals (five genera) preserved in life position, and finally a more diversified coral assemblage (11 genera) building a reef framework with stromatolitic crusts reflect pioneer, colonization and diversification stages, respectively. A specific depth window, where light was reduced but sufficient for a catch-up growth mode and below the erosive action of waves, probably at the lower slope of a fore-reef area, has made possible the development and the record of this ecological succession. With a more diversified coral assemblage (16 genera), the reef unit 2 reflects shallower and well-agitated waters of a fore-reef area. Overlaying this second reef unit, the upper part of the section reveals back-reef deposits made of reworked reef elements, whereas a putative reef crest area is not recorded.</description>
<date>2012</date>
</dc>
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