Dr Julien Bourget

Qualifications

Ph.D. Turbidite systems of the Gulf of Oman and East-African margin (Indian Ocean): Sedimentary architecture, externals forcings on turbidite system growth during the Late Quaternary, and impact of the sediment distribution on sea-floor geoacoustics. 

University of Bordeaux, France (October 2006 - December 2009) - My project has been realized under a collaboration between the sedimentology team of the University of Bordeaux (UMR CNRS5805 EPOC), the Geology/Geochemistry/Geophysics dept. of IFP (French Petroleum Institute - Paris), and the SHOM (French Navy Oceanographic Service - Brest). It has been funded  by the French Ministry of Defense.

Supervisors: Dr Sébastien Zaragosi, Dr Nadine Ellouz-Zimmermann, Dr Thierry Garlan & Prof. Jean-Luc Schneider

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MSc. at the University of Bordeaux, Fr (2006) - Research Project carried out on The Western Black Sea basin Quaternary sediments. My work focused on the distal termination of the Danube (passive-margin) deep-sea fan and its relationship with the Turkish (active-margin) deposits.

Supervisors: Prof. Thierry Mulder (University of Bordeaux) & Dr Gilles Lericolais (IFREMER)

Research Interests

My research interests include Sedimentology, Sequence stratigraphy, and Sedimentary Processes

My main current research project at ASP focuses on the Plio-Pleistocene evolution of the Bonaparte basin, Timor Sea, NW Australia. It will be investigated through 2D/3D seismic, shallow core and borehole data, and stratigraphic-forward modelling.The source-to-sink configuration of the Bonaparte basin is very atypical in comparison to the widely studied modern analogues in both passive and active margin settings (ex: Amazon, Nile, NW Africa, GOM, or California margins). The area is characterized by a very wide (> 500 km), structurally-controlled continental shelf. Sediments are carried to the marine basin by several river systems with relative small size and low relief watersheds. Seaward, the narrow and steep continental slope terminates into the Timor trench (active subduction zone). Our aim will be to investigate the architecture of the depositional systems from the coastline to the continental slope (including giant incised valleys, tidal channels, shelf-margin deltas, submarine canyons and mass-transport deposits), their evolution through time (sea-level, monsoon climate changes, neotectonics during the Plio-Pleistocene), impact of regional hydrodynamics on sediment dispersal pattern along the shelf, or importance of basement structures & faulting on depocentres location. This study include data shared by Woodside Energy Limited and collaboration with IFP (Fr).

My other research interests include:

Sedimentary architecture of deep-water turbidite systems, focusing on the different parameters that control the growth and geometry of passive-margin to active-margin turbidite systems. Examples of my past work study areas include the Oman margin, the Danube fan, the tectonically-controlled Makran and Turkish margins, or a giant turbidite valley in the East african transform margin. I continue to work in collaboration with the University of Bordeaux on the FANINDIEN 2009 survey (Indian Ocean) results, which include the distal Indus deep-sea fan.

Sedimentary processes and gravity current dynamics, focusing on the sedimentary evidence of triggering mechanisms for gravity flows (i.e. flood-related currents, mass wasting events) and resulting deposits, as well as the impact of fault-induced knickpoints on gravity flows physical behaviour along intraslope basins. This processes are currently investigated using 3D numerical modelling - process-based CATS model develloped at IFP.

Publications

Lericolais, G., Bourget, J., Popescu, I., Jermannaud, P., Mulder, T., Jorry, S., Panin, N. (in prep.). Late Quaternary deep-sea sedimentation in the wetsren Black Sea: new insights from recent coring and seismic data in the deep basin.  Global and Planetary Change

 

Bourget, J., Ainsworth, B., Backe, G., Keep, M. (in prep.). Timing, nature and impact of the Neogene deformation on the Northern Bonaparte basin sedimentation: the shaping of a giant continental shelf. 

 

Caley, T., Malaize, B., Zaragosi, S., Rossignol, L., Bourget, J., Martinez, P., Giraudeau, J., Charlier, K., Ellouz-Zimmermann, N. (in review). New Arabian Sea records help decipher orbital timing of Indo-Asian monsoon.

 

Rossignol, L., Eynaud, F., Bourget, J., Fontanier, C., Zaragosi, S., Ellouz-Zimmermann, N., Lanfumey, V. (2011). High occurence of Orbulina Suturalis and "Praeorbulina-like specimens" in sediments of the Northern Arabian Sea during the Last Glacial Maximum. Marine Micropaelontology, 79 (2011):100-113 doi:10.1016/j.marmicro.2011.01.006 |

 

Bourget, J., Mouchot, N., Zaragosi, S., Ellouz-Zimmermann, N., Garlan, T., Lanfumey, V, VanToer, A., Schneider, J-L. (2011). Turbidite system architecture and sedimentary processes along topographically complex slopes: the Makran convergent margin. Sedimentology, 58 (2): 376-406

 

Bourget, J., Zaragosi, S., Mulder, T., Garlan, T., Schneider, J-L., Ellouz-Zimmermann, N., VanToer, A., and Mas, V. (2010b) Hyperpycnal-fed turbidite lobe architecture and recent sedimentary processes: a case study from the Al Batha turbidite system, Oman margin. Sedimentary Geology, Special Issue on Turbidite Lobes, 229: 144-159

 

Bourget, J., Zaragosi, S., Ellouz-Zimmermann, N., Ducassou, E., Prins, M.A., Garlan, T., Lanfumey, V., Rouillard, P. and Schneider, J-L.  (2010a). Highstand vs. lowstand turbidite system growth in the Makran active margin: imprints of high-frequency external controls on sediment delivery mechanisms to deep water systems. Marine Geology, 274 (1-4): 187-208.

 

Mouchot, N., Loncke, L., Mahieux, G., Bourget, J., Lallemant, S., Ellouz-Zimmermann, N. (2010). Recent sedimentary processes along the Makran trench (Makran active margin, offshore Pakistan). Marine Geology, 271(1-2): 17-31.

 

Bourget, J., Zaragosi, S., Garlan, T., Gabelotaud, I., Guyomard, P., Ellouz-Zimmermann, N., Schneider, J-L., and the FanIndien 2006 survey crew (2008). Discovery of a giant deep sea valley in the Indian Ocean, off Eastern Africa: the Tanzania Channel. Marine Geology 255 (3-4): 179-185.

 

Castelle, B., Bourget, J., Molnar, N., Strauss, D., Deschamps, S., Tomlinson, R. (2007). Dynamics of a wave-dominated tidal inlet and influence on adjacent beaches, Currumbin Creek, Gold Coast, Australia. Coastal Engineering 54(1), 77-90.

Entry last updated: Thursday, 20 Sep 2012