The Melut Basin is a rift basin elongated in NW-SE direction located in south Sudan. Under the influence of Intracratonic extensional forces that resulted from the opening of the Atlantic, and associated left-lateral strike-slip, a series of synsedimentary structures are developed in Melut Basin. On the basis of different features of structure development continuous, late deformation and drive mechanism, there are mainly three types of synsedimentary structures developed, i.e. inherited structures, fault-related structures and differential compaction-related structures, respectively. Inherited structures are inherited from paleo-uplift and reformed by later-stage faulting. Fault-related structures form as a result of displacement decreases with distance from the fault surface caused by low dip angle listric fault. The origins for the listric fault include listric basin-bounding fault caused by adjacent titled block and strike-slip fault involved into shale formation. The main two types of differential compaction-related structures are caused by intense differential compaction within intervals of sandy conglomerate of alluvial fan and the original sediments are inclined to collapse into depression during sedimentary compaction, respectively. The synsedimentary fault and its assemble pattern controlled the distribution of sedimentary facies, the synsedimentary structures has great influence for the generation, migration, accumulation and preservation of oil and gas.


Article metrics loading...

Loading full text...

Full text loading...


  1. A. P.Aizebeokhai
    ., 2011. Nigerian Association of Petroleum Explorationists (NAPE) 2011 (West Africa Deepwater: Successes, Challenges and Future Prospects), November13 – 17
    [Google Scholar]
  2. Y.Chen, C.Lin, et al.
    2006. Controls of Paleogene syndepositional faults on the successions and dipositional systems in the Qikou Depression, Bohai Bay, Journal of Geochechanics, 12 (3):378–386.
    [Google Scholar]
  3. Y.Zhong, Y.Li, H.Guo, J.Zhong
    ., 2006. Study on Palaeogene syndeposition and its relation with hydrocarbon potentials in Jiyang Sag, Geotectonica et Metallogenia, 30 (1): 28–40
    [Google Scholar]
  4. W. KHamblin
    , 1965. Origin of “reverse drag” on the downthrown side of normal faults. Geological Society of America Bulletin. 75
    [Google Scholar]
  5. RWSchlische
    ., 1995. Geometry and origin of fault-related folds in extensional settings. American Association of Petroleum Geologists Bulletin, v. 79
    [Google Scholar]
  6. P. E.Olsen
    , 2010. Rift-Basin structure and its influence on sedimentary system. Sedimentation in Continental Rifts, January25, 2010, v. 1, no. 1, p.57–81
    [Google Scholar]

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error