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• W2988066098 endingPage "106954" @default.
• W2988066098 startingPage "106954" @default.
• W2988066098 abstract "Active tectonics in North Africa are fundamentally driven by NW-SE directed slow convergence between the Nubia and Eurasia plates, leading to a region of thrust and strike-slip faulting. In this paper, we analyse the morphometric characteristics of the northern Tunisia sector. We aim to identify unknown active tectonic structures, and to further understand the mechanisms driving the drainage evolution in this region. The interpretation of morphometric data was ground-truthed with field data. Our analysis indicates that recent fluvial captures have been the main factor driving fluvial network reorganization in NE Tunisia. The Medjerda River has increased its drainage area during the Quaternary by capturing adjacent axial valleys to the north and south of its drainage divide. These captures are probably driven by the gradual uplift of adjacent axial valleys by reverse/oblique faults or associated folds like El Alia-Teboursouk and Dkhila faults. Our fieldwork found that these faults cut Holocene sediments thus showing recent fault activity. The growth and stabilization of the axial Medjerda River, contrary to the natural transverse drainage development of mature orogens, might be caused by a combination of crustal shortening structures and mantle dynamic processes. The Medjerda River flows SW-NE from the South Atlassic dextral transfer zone to the regional topographic low defined by the Gulf of Gabes and the Straits of Sicily, which in turn, may be influenced by the underlying Tunisian slab in the region. • Morphometric relief analysis for the tectonic characterisation of northern Tunisia • Recent fluvial captures are the main factor driving fluvial network reorganization • River captures are caused by crustal shortening structures and mantle dynamics • The Medjerda River has increased its drainage area during the Quaternary • The morphometric analysis supports a sparse distribution of active faulting" @default.
• W2988066098 created "2019-11-22" @default.
• W2988066098 creator A5011407145 @default.
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• W2988066098 creator A5066884160 @default.
• W2988066098 creator A5084888028 @default.
• W2988066098 creator A5087632135 @default.
• W2988066098 date "2020-02-01" @default.
• W2988066098 modified "2023-10-18" @default.
• W2988066098 title "Active tectonics and drainage evolution in the Tunisian Atlas driven by interaction between crustal shortening and mantle dynamics" @default.
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