par- 26 juin 2017 ( dernière mise à jour : 30 juin 2017 )
magmatic divergent margins, transform margins, post-rift subsidence, contourites
Marginal plateaus can be defined in the submarine morphology as flat (sub-horizontal) but deep (deeper than the shelf break) domains within the continental slope (Mercier de Lépinay et al., 2016). They occur in all passive margins, but are mainly located at the junction between diachroneous ocean basins.
These structures were classically considered as remnants of rifted margins, underlain by a thinned continental crust. However, they appear closely related to magmatic rifted margins and Seaward Dipping Reflectors. They are also systematically bounded by a transform margin. Forming prominent salients along the continental margin, they influence the deep-sea circulation, leading to contouritic sedimentation.
Both the polyphased tectonic and subsidence evolution, and the sedimentary setting controlled by deep currents, make the marginal plateaus a specific target for continental margin understanding and hydrocarbon exploration.
Based on recent data acquisition (e.g. Demerara plateau offshore French Guiana and Suriname), the aims of the workshop are to compare the numerous marginal plateaus in the world, and to bring together specialists from different Earth science fields, in order to investigate :
We welcome contributions on all topics related to marginal plateaus, either based on case studies, on synthetic studies or on modelisation. If you want to make a presentation (likely oral, but posters are also welcomed) or just attend, please send an email to firstname.lastname@example.org.
The workshop will be held in english.
Location and date : Grenoble (France), November 28-29th 2017
No fees, but pre-registration is mandatory.
Mail : email@example.com
Tel : +334 76 51 40 69
Adress : ISTerre, 1381 rue de la Piscine
38400 St Martin d’Hères – France
The organization committee
Christophe Basile (ISTerre, Université Grenoble-Alpes)
Lies Loncke (CEPHREM, University Perpignan)
Walter Roest (IFREMER, Brest)
David Graindorge (University Brest)
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