Quantification des flux sédimentaires et de la subsidence du bassin ...

tel-00790852, version 1 - 21 Feb 2013
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peripheral basins during which the Mediterranean was full of water (5.96 – 5.60 Ma) from the
almost complete drying up of the central basins (5.60 – 5.46 Ma), which constitutes the peak
of the MSC. Our study supports this scenario. However, controversy continues about the
status of two Mediterranean regions:
- Sicily: a peripheral basin (relatively deeper than the others) for many authors (Bache
et al., 2012; Bertini et al., 1998; Butler et al., 1995; Clauzon et al., 1996; Clauzon et
al., 2005; El Euch-El Koundi et al., 2009; Pedley and Grasso, 1993; Pedley et al.,
2007; Popescu et al., 2009; Suc et al., 1995) or a central deep basin uplifted during the
Pliocene and Quaternary (Krijgsman et al., 1999; Krijgsman and Meijer, 2008; Manzi
et al., 2009; Manzi et al., 2011; Rouchy and Caruso, 2006; Rouchy and Saint Martin,
1992; Roveri et al., 2008a; Roveri et al., 2008b);
- Apennine Foredeep: an appendix of the central deep Ionian Basin (Roveri and Manzi,
2006; Roveri et al., 2008b) or a perched relatively deep basin isolated during the peak
of the MSC (Bache et al., 2012; Clauzon et al., 1997; Clauzon et al., 2005; Corselli
and Grecchi, 1984; Popescu et al., 2007).
Even if similar data characterize the West and East Mediterranean basins as mentioned
above, continuing investigations are necessary not only in these debated areas but also in
coring the central evaporites to reach a consensus at the size of the entire Mediterranean
and, as a consequence, to perform a new generation of numerical modellings at this scale.
7.2. Constraints for numerical models
During the last decade, several numerical models have been performed to complete the
history of the MSC insufficiently elucidated from field and analytic data:
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