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| Molliex, Stephane; Siame, Lionel L.; Bourles, Didier L.; Bellier, Olivier; Braucher, Regis; Clauzon, Georges. |
| Located in the foreland of the Western Alps, the Crau Plain was the outlet of the Durance River in the Pleistocene. In order to constrain its geodynamic evolution in terms of chronology and denudation rates, the two main Quaternary deposits of this plain have been studied based on cosmogenic nuclide Be-10 concentration measurements along depth profiles. The abandonment of the Miramas and Luquier alluvial surfaces occurred at the beginning of glacial periods, Wurm (isotopic stage 4) and Riss (isotopic stage 6), respectively. Discrepancy in denudation rates under similar geomorphological and lithological conditions suggests different denudation processes during glacial and interglacial periods. The denudation rate has been estimated at about 25 mm ka(-1) for... |
| Tipo: Text |
Palavras-chave: Quaternary; Denudation rate; Cosmic ray exposure (CRE) dating; Be-10 depth profile; Provence; Periglacial setting. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00149/26040/24740.pdf |
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| Blanc, Jean Joseph; Clairefond, Pierre; Froget, Catherine Hélène; Jeudy De Grissac, Alain; Onoratini, Gérard; Orsolini, Patrick. |
| Establishment of the facies terminology to the upper margin sediments. Main difficulties lies to the benthic communities assemblages and with the internal relations of sands and gravels deposits. These researches deals of the preservation and potentialities of shoreline and bottoms management. We use here some quantitative methods of data treatment in relation to a variable choice and sectorial sampling areas, analysis of variance, factorial analysis (correspondances) and clustering. The sampling areas are: Maguelonne, bays of Saintes Maries de la Mer and Beauduc, roadsteads of Giens and Hyères, Saint Tropez peninsula and golf of Frejus. We deal the influences of sedimentary prism, and the anthropic activities, gravels and sands contents, potential and... |
| Tipo: Text |
Palavras-chave: Sédiment marin; Marge continentale stable; Prismes littoraux; Sédimentation biogène; Aménagements et protection; Analyse factorielle; Précontinent; Provence; Méditerranée. |
| Ano: 1980 |
URL: http://archimer.ifremer.fr/doc/00110/22160/19811.pdf |
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