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Megaslides, Source Rocks and Mantle ConvectionNormal access

Authors: N. Hodgson and K. Rodriguez
Event name: 79th EAGE Conference and Exhibition 2017
Session: Exploration Discoveries and Future Trends (Dedicated Session)
Publication date: 12 June 2017
DOI: 10.3997/2214-4609.201700891
Organisations: EAGE
Language: English
Info: Abstract, PDF ( 407.81Kb )
Price: € 20

Modern deep‐water seismic data from many of the worlds passive margins reveal that a large portion of the slope and deep water basin are comprised of slowly developed, gravity controlled fold and thrust systems or “megaslides” (examples from Orange River, Namibia and Juba Lamu Basin, Somalia). Yet similar clastic sequences in other basins have not developed these features. Mechanisms for megaslide formation, and indeed the controls on clastic margin stability in general will be discussed, including the potential for identification of source rocks, and yet we propose there is also a “basin specific control on subsidence”, and therefore deformation.

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