Timing and modes of granite magmatism in the core of the Alboran Domain, Rif chain, northern Morocco: Implications for the Alpine evolution of the western Mediterranean. (Articolo in rivista)

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  • Timing and modes of granite magmatism in the core of the Alboran Domain, Rif chain, northern Morocco: Implications for the Alpine evolution of the western Mediterranean. (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2009TC002487 (literal)
Alternative label
  • Rossetti F. (1); Theye T. (2); Lucci F. (1); Bouybaouene M. (3); Dini A. (4); Gerdes A. (5); Phillips D. (6); Cozzupoli D. (1) (2010)
    Timing and modes of granite magmatism in the core of the Alboran Domain, Rif chain, northern Morocco: Implications for the Alpine evolution of the western Mediterranean.
    in Tectonics (Washington, D.C.); AGU, American geophysical union, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rossetti F. (1); Theye T. (2); Lucci F. (1); Bouybaouene M. (3); Dini A. (4); Gerdes A. (5); Phillips D. (6); Cozzupoli D. (1) (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 30 (literal)
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  • http://www.agu.org/pubs/crossref/2010/2009TC002487.shtml (literal)
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  • 29 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: Tectonics, vol. 29 pp. 1 - 30. American Geophysical Union, 2010. (literal)
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  • 30 (literal)
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  • TC2017 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Dipartimento di Scienze Geologiche, Università Roma Tre, Roma, Italy (2) Institut für Mineralogie und Kristallchemie, Universität Stuttgart, Stuttgart, Germany (3) Département de Géologie, Université de Rabat, Rabat, Morocco (4) Istituto di Geoscienze e Georisorse, CNR, Pisa, Italy. (5) Institute für Geowissenschaften, Goethe Universität, Frankfurt, Germany (6) School of Earth Sciences, University of Melbourne, Parkville, Australia (literal)
Titolo
  • Timing and modes of granite magmatism in the core of the Alboran Domain, Rif chain, northern Morocco: Implications for the Alpine evolution of the western Mediterranean. (literal)
Abstract
  • The Betic-Rif orogen forms the western termination of the Alpine orogenic system in the Mediterranean region. The precise timing, structural evolution, and distribution of high-grade metamorphic units (Alpine versus pre-Alpine) in the inner zones of the orogen (Alboran Domain) remain controversial issues. In this paper we report occurrence of distinct generations of peraluminous granitic bodies intruded within Beni Bousera peridotites and their amphibolite-to-granulite facies envelope, in the core of the Alboran Domain of the Rif chain (northern Morocco). These granitic bodies are central to the reconstruction of the high-grade evolution of the Alboran Domain because they provide first-order structural markers to assess the P-T-t deformation history of the high-grade terranes. Here we document the petrography and structural relationships with the host rocks and constrain the timing of granite emplacement using laser ablation-inductively coupled plasma-mass spectrometry U-Pb zircon and/or monazite dating, complemented by (40)Ar/(39) Ar dating. The results indicate that granite emplacement occurred in two major episodes of anatectic magmatism, during the Hercynian (circa 300 Ma) and Alpine (circa 22 Ma) periods, respectively. These data (1) provide conclusive evidence for an important phase of Hercynian magmatism and high-grade metamorphism in the Alboran Domain and (2) permit a revaluation of the significance of the high-grade early Miocene event documented in the Alboran Domain in terms of a late stage, thermal pulse that reworked a polymetamorphic (Hercynian and Alpine) nappe pile. These results provide new constraints for construction of a feasible tectonometamorphic model for the Alpine evolution of the western Mediterranean. Citation: Rossetti, F., T. Theye, F. Lucci, M. L. Bouybaouene, A. Dini, A. Gerdes, D. Phillips, and D. Cozzupoli (2010), Timing and modes of granite magmatism in the core of the Alboran Domain, Rif chain, northern Morocco: Implications for the Alpine evolution of the western Mediterranean. (literal)
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