Initial burst of oceanic crust accretion in the Red Sea due to edge-driven mantle convection (Articolo in rivista)

Type
Label
  • Initial burst of oceanic crust accretion in the Red Sea due to edge-driven mantle convection (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1130/G32243.1 (literal)
Alternative label
  • Ligi, Marco[ 1 ] ; Bonatti, Enrico[ 1,2 ] ; Tontini, Fabio Caratori[ 3 ] ; Cipriani, Anna [ 2,4 ] ; Cocchi, Luca[ 5 ] ; Schettino, Antonio[ 6 ] ; Bortoluzzi, Giovanni[ 1 ] ; Ferrante, Valentina[ 1 ] ; Khalil, Samir; Mitchell, Neil C.[ 7 ] ; Rasul, Najeeb[ 8 ] (2011)
    Initial burst of oceanic crust accretion in the Red Sea due to edge-driven mantle convection
    in Geology (Boulder Colo.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ligi, Marco[ 1 ] ; Bonatti, Enrico[ 1,2 ] ; Tontini, Fabio Caratori[ 3 ] ; Cipriani, Anna [ 2,4 ] ; Cocchi, Luca[ 5 ] ; Schettino, Antonio[ 6 ] ; Bortoluzzi, Giovanni[ 1 ] ; Ferrante, Valentina[ 1 ] ; Khalil, Samir; Mitchell, Neil C.[ 7 ] ; Rasul, Najeeb[ 8 ] (literal)
Pagina inizio
  • 1019 (literal)
Pagina fine
  • 1022 (literal)
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  • 39 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] CNR, Ist Sci Marine, I-40129 Bologna, Italy [ 2 ] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA [ 3 ] GNS Sci, Ocean Explorat Sect, Lower Hutt 5040, New Zealand [ 4 ] Univ Modena, Dipartimento Sci Terra, I-41100 Modena, Italy [ 5 ] Ist Nazl Geofis & Vulcanol, I-19020 Fezzano, La Spezia, Italy [ 6 ] Univ Camerino, Dipartimento Sci Terra, I-62032 Camerino, Italy [ 7 ] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England [ 8 ] Saudi Geol Survey, Jeddah 21514, Saudi Arabia (literal)
Titolo
  • Initial burst of oceanic crust accretion in the Red Sea due to edge-driven mantle convection (literal)
Abstract
  • The 500 m.y. cycle whereby continents assemble in a single supercontinent and then fragment and disperse again involves the rupturing of a continent and the birth of a new ocean, with the formation of passive plate margins. This process is well displayed today in the Red Sea, where Arabia is separating from Africa. We carried out geophysical surveys and bottom rock sampling in the two Red Sea northernmost axial segments of initial oceanic crust accretion, Thetis and Nereus. Areal variations of crustal thickness, magnetic intensity, and degree of melting of the subaxial upwelling mantle reveal an initial burst of active oceanic crust generation and rapid seafloor spreading below each cell, occurring as soon as the lid of continental lithosphere breaks. This initial pulse may be caused by edge-driven subrift mantle convection, triggered by a strong horizontal thermal gradient between the cold continental lithosphere and the hot ascending asthenosphere. The thermal gradient weakens as the oceanic rift widens; therefore the initial active pulse fades into steady, more passive crustal accretion, with slower spreading and along axis rift propagation. (literal)
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