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<title lang=en>Active tectonics of the Northern Rif (Morocco) from geomorphic and geochronological data</title>
<creator>POUJOL, Antoine</creator>
<creator>Ritz, Jean-François</creator>
<creator>Tahayt, A.</creator>
<creator>Vernant, Philippe</creator>
<creator>Condomines, Michel</creator>
<creator>Blard, P. -H.</creator>
<creator>Billant, J.</creator>
<creator>Vacher, L.</creator>
<creator>Tibari, B.</creator>
<creator>Hni, L.</creator>
<creator>Idrissi Koulali, A</creator>
<contributor>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)</contributor>
<contributor>Risques ; 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 de Geophysique, Rabat ; Université du Québec</contributor>
<contributor>Dynamique de la Lithosphere ; 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>Centre de Recherches Pétrographiques et Géochimiques (CRPG) ; Université de Lorraine (UL) - 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>Australian National University (ANU)</contributor>
<description>International audience</description>
<source>ISSN: 0264-3707</source>
<source>Journal of Geodynamics</source>
<publisher>Elsevier</publisher>
<identifier>hal-01053492</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01053492</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01053492</source>
<source>Journal of Geodynamics, Elsevier, 2014, 77, pp.70-88. 〈10.1016/j.jog.2014.01.004〉</source>
<identifier>DOI : 10.1016/j.jog.2014.01.004</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jog.2014.01.004</relation>
<language>en</language>
<subject lang=en>Active tectonics</subject>
<subject lang=en>He-3 cosmogenic</subject>
<subject lang=en>Morocco</subject>
<subject lang=en>Al-Hoceima</subject>
<subject lang=en>Geomorphology</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We present results of a geomorphological and morphotectonic analysis of the northeastern part of the Rif. We show that the present day kinematics of the Rif is characterized by active deformation along the Trougout and Nekor faults in the North-East. Digital Elevation Models of offset drainage features (streams, fluvial terraces) allow determining a normal-left-lateral motion along the Trougout fault and a left-lateral strike-slip motion along the Nekor fault. Preliminary 3He cosmogenic dates of tectonic markers yield vertical and horizontal slip rates of ∼0.9 mm/yr and ∼0.5 mm/yr, respectively along the Trougout fault. The present-day localized transtension seen in the north-eastern Rif morphology (Ras Tarf) is coeval with uplifted marine terraces near the Al Hoceima Bay. U/Th dating of shells yield an average uplift rate of ∼0.2 mm/yr during the past 500 ka. These data show that active transtension in the northeastern Rif is also associated with uplift. These new morphotectonic constraints are consistent with the GPS measurements showing southwestward overall motion of most of the Rif belt with respect to stable Africa.</description>
<date>2014-07</date>
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