Relative landscape maturity in the South Rifian Ridges (NW Morocco): Inferences from DEM-based surface indices analysis

Amine, Afaf; Ouardi, Hmidou El; Zebari, Mjahid; Makrini, Hassane El; Habibi, Mohamed

doi:10.1016/j.acags.2020.100027

Cited by 6 publications

(1 citation statement)

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“…The approximate size of the study area is 22 km 2 × 16 km 2 . Many previously published studies on a regional scale (e.g., El Hamdouni et al 2008;Alipoor et al 2011;Amine et al 2020) and of single structures (e.g., Azor et al 2002;Alipoor et al 2011;Giaconia et al 2012;Özkaymak & Sözbilir 2012;Özkaymak 2015;Bhatt et al 2020) have successfully identified the effects of tectonic processes in shaping surface landforms in similar areas.…”

Section: Introductionmentioning

confidence: 99%

Landscape response to deformation in the Sabalan area, NW Iran: Inferred from quantitative morphological and structural analysis

Saber

Caglayan

Işık

2022

Earth and Environmental Science Transactions of the Royal Society of Edinburgh

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The geological and tectonic background of the Sabalan area in NW Iran and its present-day surface processes make it ideal for examining the effects of tectonic processes in shaping the Earth's crust. As a result of the intense distribution of pre-Quaternary and Quaternary structures (e.g., faults, joints and folds), most of the drainage basins in the southern and central parts of the study area have developed under tectonic-dominated conditions, whereas the effects of erosional processes are greater in the north and east. An evaluation of the geomorphic indices using the index of active tectonics (IAT) and analytical hierarchy process (AHP) methods shows that the AHP results are more reliable than the IAT results and are coherent with the geological and structural conditions of the study area. The geomorphic results are highly consistent with the intensity and distribution of fractures. The majority of fractures have developed in a NW–SE direction, indicating antithetic R′ Riedel fractures to the main NE-SW-trending faults. However, a significant number of the fractures in the study area are NNE–SSW- and NE–SW-oriented R and P fractures and NNW–SSE-oriented tension fractures. Palaeostress analysis of the fault data shows at least two faulting events in the pre-Quaternary and Quaternary, respectively. The pre-Quaternary NNW–SSE-striking dextral strike-slip faults experienced post-Eocene 25–30° clockwise rotation and re-activated as NE–SW-striking sinistral faults during the Quaternary. Although seismic activity is currently low, the consistency of our results with the regional stress data show that the study area is still tectonically active.

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