Implications of salt–sediment interactions on the architecture of the Gulf of Lions deep-water sedimentary systems—western Mediterranean Sea

Reis, Antônio Tadeu dos; Gorini, Christian; Mauffret, A.

doi:10.1016/j.marpetgeo.2005.03.006

Cited by 51 publications

(27 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the western Mediterranean, seismic data have been analysed off Algeria Mauffret, 2007;Gaullier et al, 2008;Yelles et al, 2009], in the Valencia through , in the Gulf of Lions [Guennoc et al, 2000;Dos Reis et al, 2005;Lofi et al, 2005;Bache et al, 2009a], in the Liguro-Provençal basin [Savoye and Piper, 1991;], on the Corsica margins and basin and on the Sardinia margin [Sage et al, 2005;Cornée et al ., 2008]. In the Eastern Basin, the dataset covers the Egyptian margin [Loncke et al, 2004[Loncke et al, , 2006, the Levantine basin [Netzeband et al, 2006;Cartwright, 2006, 2007], the Cyprus arc [Maillard et al, 2010] and the Florence ridge [Sellier et al, 2007].…”

Section: Methodsmentioning

confidence: 99%

Refining our knowledge of the Messinian salinity crisis records in the offshore domain through multi-site seismic analysis

Lofi

Sage

Déverchère

et al. 2011

Bulletin De La Société Géologique De France

Self Cite

144

161

View full text Add to dashboard Cite

The Messinian salinity crisis (MSC) [Hsü et al., 1973] has deeply shaped the Mediterranean landscape and triggered large sedimentary deposits (evaporites and clastics) in the deep basins within a short time span. Until recently, the MSC has mainly been analyzed independently, either through outcrops located onshore (e.g. Morocco, Cyprus, Spain, Sardinia, Italy) or through marine seismic profiles in the deep offshore. Each approach bears its own limitations:(1) on the one hand, land outcrops refer to incomplete Messinian successions that are geometrically disconnected from the offshore Messinian deposits owing to tectonics (e.g. Apennines) and/or because they accumulated at an early stage of the crisis in shallow marginal basins (e.g. Spain); (2) on the other hand, seismic profiles from the upper margins down to the deep basins allow to image and explore the entire MSC event as a continuous process, but with a lower resolution and with a lack of stratigraphical and lithological control, in the absence of full recovery of scientific boreholes.We present here a synthesis of a set of modern geophysical data over the Mediterranean and Black seas allowing to image the Messinian markers (erosion surfaces, depositional units and their bounding surfaces) much better than previously and to study the spatio-temporal organisation of these markers from the inner-shelves down to the bathyal plains. The results from thirteen areas located offshore are compared, with common charts and nomenclatures. The comparative and multi-site approach developed here allows to analyse the record of the MSC on margin segments and basins that depict various structural, geodynamical and geological settings, to fix a number of local influencing factors (tectonics, subsidence, inherited topography, sedimentary fluxes...) and to partly assess their influence in facies and geometrical variations of the MSC units. We are thus able to extract from our analysis some recurrent signals related to the MSC ss., allowing us to discuss: (1) the amplitude and modalities of base-level changes during the MSC; (2) the depositional modalities of the MSC units in the deep basins; (3) the location of the erosion product of the margins and to emphasise (4) the major differences between the eastern and western Mediterranean basins. Une meilleure connaissance des enregistrements de la crise de salinité messinienne en domaine marin grâce à l'analyse sismique multi-sitesMots-clés. -Crise de salinité messinienne, Méditerranée, Profils sismiques, Evaporites, Erosion, Clastiques.Résumé. -La crise de salinité messinienne (CSM) [Hsü et al., 1973] a profondément modelé les paysages méditerra-néens et généré d'épaisses accumulations sédimentaires (évaporites et dépôts clastiques) dans les bassins profonds sur une brève période de temps à l'échelle géologique. Jusqu'à présent, la CSM a principalement été étudiée distinctement, à terre, grâce aux affleurements (ex. Maroc, Chypre, Espagne, Sardaigne, Italie…), et en domaine marin, par l'intermé-diaire de profils sismiques. Chacun...

show abstract

Section: Methodsmentioning

confidence: 99%

Refining our knowledge of the Messinian salinity crisis records in the offshore domain through multi-site seismic analysis

Lofi

Sage

Déverchère

et al. 2011

Bulletin De La Société Géologique De France

Self Cite

144

161

View full text Add to dashboard Cite

show abstract

“…At the base of slope, two large sedimentary bodies, the Rhone Turbidite System and the Pyreneo-Languedocian Sedimentary Ridge have dominantly developed during the Plio-Quaternary high-frequency glacio-eustatic fluctuations (dos Reis et al, 2005;Droz et al, 2006). They belong to the Lowstand Systems Tracts of fourth-order glacioeustatic cycles in the early "Exxon" model of sequence stratigraphy (Posamentier and Vail, 1988).…”

Section: The Gulf Of Lions Continental Marginmentioning

confidence: 99%

“…It is a thick (3600 m) accumulation of sediments from the base of the slope down to the Balearic Abyssal Plain at water depths up to 2850 m. The early development of the Rhone Turbidite System, during the Pliocene (Droz et al, 1991;dos Reis et al, 2005), identified as the Rhone Basal Complex (Droz et al, 2006) followed the re-flooding of the Mediterranean after the Messinian Salinity Crisis (Clauzon, 1973;Hsü et al, 1973;Lofi et al, 2003;Bache et al, 2012). In the distal domain, the radial channel network connects the Rhone Turbidite System to the Petit-Rhone Canyon (Jegou, 2008).…”

Section: Morphology and Structure Of The Rhone Turbidite Systemmentioning

confidence: 99%

Sea-level control on turbidite activity in the Rhone canyon and the upper fan during the Last Glacial Maximum and Early deglacial

tombo

Dennielou

Berné

et al. 2015

Sedimentary Geology

View full text Add to dashboard Cite

The timing, routing, and processes of sediment transfer from the continents to the oceans at millennial time-scale are still largely unknown. The potential of turbidite systems (dominantly deposited during sea-level lowstands) to record global or regional environmental fluctuations is usually under-exploited because of the difficulty to obtain robust chronostratigraphic constraints in turbiditic deposits, and therefore to tie changes in sedimentary processes to environmental fluctuations. We were able to obtain a millennial-scale chronostratigraphy based on oxygen isotopes of the scarce foraminifera preserved in turbiditic deposits of the Rhone Turbidite System within the Western Mediterranean. Our results show that 1) objective criteria can be defined for the selection of foraminifera preserved within the pelagic intervals between the turbiditic sequences, in order to obtain a reliable isotope stratigraphy; 2) turbidites triggered by hyperpycnal currents are described for the first time within the Rhone Turbidite System. They are related to the periods of direct fluvial connection with the canyon head (during the sea-level lowstand and early rise), and to a period of high sediment flux in relation to the massive recession of the Rhone glaciers in the Alps; 3) the lithofacies change passing from hyperpycnal to "Bouma-type" is dated at ca 19 cal. ka BP, which might correspond to an acceleration of sea-level rise (19-ka Meltwater Pulse).

show abstract

“…The Gulf of Lion passive continental margin includes the widest (70 km) continental shelf in the western Mediterranean Sea with the shelf edge at a mean depth of 135 m. The continental slope is dissected by an intricate network of 100-150 km long submarine canyons feeding base-ofslope and rise thick sediment bodies such as the Rhône Deep Sea Fan and the Pyrenean Canyon Deep Sediment Body (Alonso et al 1991;Berné et al 1999;Canals 1985;Canals et al 2004b;dos Reis et al 2005;Droz 1983;Medimap Group 2005). Canyon heads and upper courses are cut into the continental shelf and are separated by interfluves (or inter-canyon areas) that are assumed to hold the most continuous, high resolution sedimentary sequences of Quaternary age in the Gulf of Lion's slope.…”

Section: Geological Settingmentioning

confidence: 99%

Overpressure within upper continental slope sediments from CPTU data, Gulf of Lion, NW Mediterranean Sea

Lafuerza

Sultan

Canals

et al. 2008

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Data from in situ piezocone tests (CPTU) and laboratory analyses are utilized for the interpretation of the stress history of Quaternary sedimentary sequences in the upper continental slope of the Gulf of Lion, northwestern Mediterranean Sea. A CPTU based preconsolidation pressure profile referenced to the current effective stress indicates that the deposit is underconsolidated from 12 meters below the seafloor (mbsf) down to at least 150 mbsf. Excess pore pressure below 12 mbsf is further supported by results from oedometer and dissipation tests. Subseafloor pockmarks and indications of free gas in seismic reflection profiles reveal four main overpressure sources (SI-SIV) with overpressure ratios [0.3 at subseafloor depths coinciding with levels where the dominantly silty-clayey sediment contains increased proportions of sand. We relate the excess pore pressure related to free gas due to gas exsolution processes and sea level variations driven by Pleistocene sea level changes. Keywords Stress history Á Preconsolidation pressure Á Overpressure Á Continental slope Á Gulf of LionList of symbols Du excess pore pressure or overpressure, kPa Du CPTU overpressure determined by CPTU, kPa Du LOGS overpressure determined by downhole-logs, kPa Du e equilibrium pore pressure, Du e , kPa Du s excess pore pressure generated by sediment loading, kPa r vo total vertical stress, kPa r 0 vo vertical effective stress, kPa r 0 p preconsolidation pressure, kPa r 0 pa preconsolidation pressures r 0 p obtained following Casagrande's method, kPa r 0 pb preconsolidation pressures r 0 p obtained following Onitsuka's method, kPa k compression index k * adimensional ratio of the overpressure magnitude q w unit weight of the water, g cm -3 / porosity, % D h hydraulic diffusivity, m 2 s -1 e o reference void ratio f s sleeve friction, kPa g gravity, m s -2 N rt cone factor = (q t -r vo )/r 0 p

show abstract

Implications of salt–sediment interactions on the architecture of the Gulf of Lions deep-water sedimentary systems—western Mediterranean Sea

Cited by 51 publications

References 27 publications

Refining our knowledge of the Messinian salinity crisis records in the offshore domain through multi-site seismic analysis

Refining our knowledge of the Messinian salinity crisis records in the offshore domain through multi-site seismic analysis

Sea-level control on turbidite activity in the Rhone canyon and the upper fan during the Last Glacial Maximum and Early deglacial

Overpressure within upper continental slope sediments from CPTU data, Gulf of Lion, NW Mediterranean Sea

Contact Info

Product

Resources

About