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Mass transport processes, injectites and styles of sediment remobilization

Alves, T.M. ORCID:, Cardona, S. and Rodrigues, M.C.N.L. 2022. Mass transport processes, injectites and styles of sediment remobilization. Rotzien, Jon R., Yeilding, Cindy A. and Catuneanu, Octavian, eds. Deepwater Sedimentary Systems: Science, Discovery and Applications, Elsevier, pp. 361-406. (10.1016/B978-0-323-91918-0.00013-X)

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Sediment remobilization of seafloor strata is linked to the early stages of sediment burial, diagenesis and fluid migration in different geological settings. It can impact the depositional architecture of a sedimentary basin by promoting local and widespread erosion while, in parallel, lead to an overall redistribution of near-seafloor strata (the mass movement per se). It can also generate relatively deep sediment injections, fluid-flow features and associated sediment extrusions. Sediment remobilization plays an important role in hydrocarbon-rich basins. Mass transport complexes and deposits can contain reservoirs intervals or constitute competent seal units. Sediment injections can form either reservoirs or comprise routes for fluid migration (sand injectites). Furthermore, the existence of deep hydrocarbon reservoirs is often associated with fields of mud volcanoes. This chapter highlights sediment remobilization processes as being significant due to their societal, economic and ecological impact as both geohazards and hydrocarbon indicators. While associated with hydrocarbon shows and prolific accumulations at depth, some of these processes can be also damaging to infrastructure, local populations and marine life. Finally, mass movement on continental slopes, volcanic islands or seamounts can trigger catastrophic tsunamis.

Item Type: Book Section
Date Type: Published Online
Status: Published
Schools: Earth and Environmental Sciences
Publisher: Elsevier
ISBN: 9780323919180
Date of First Compliant Deposit: 2 November 2022
Date of Acceptance: 9 September 2022
Last Modified: 11 Oct 2023 12:48

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