Investigation of active faults in Morocco using morphometric methods and drainage pattern analysis

Deffontaines, Benoı̂t; Chotin, P.; Brahim, L. Aït; Rozanov, Michel

doi:10.1007/bf01764549

Cited by 47 publications

(20 citation statements)

References 11 publications

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“…The underlying concept is that rivers necessarily flow from high to low elevations parallel to the maximum regional slope. All deviations from a dendritic drainage pattern or flow direction oblique to the regional topographic gradient (''misfit drainage'' [Deffontaines et al, 1992]) are considered as drainage anomalies [e.g., Deffontaines et al, 1997;Pubellier et al, 1994].…”

Section: B2 Drainage Analysismentioning

confidence: 99%

Kinematic constraints on intra‐arc shear and strain partitioning in the southern Andes between 38°S and 42°S latitude

2006

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[1] On the basis of structural field work, fault kinematic analysis, and the analysis of digital imagery, we describe the northern part of the southern Andean intra-arc Liquiñe-Ofqui Fault Zone (LOFZ) as an SC-like fault zone system accommodating part of the Nazca-South American plate convergence obliquity. Kinematic modeling suggests that the LOFZ accommodated 124 (+24/À21) km of dextral displacement between 40°S and 42°S and 67 (+13/À11) km between 38°S and 40°S since the Pliocene. Associated vertical axis rotations are 31 ± 4°c lockwise and 9 ± 1°counterclockwise along synthetic and antithetic faults, respectively. Mean Pliocene to recent shear rates along the LOFZ decrease northward from 32 ± 6 mm/yr to 13 ± 3 mm/yr compatible with partitioning of half of the convergence obliquity into the intra-arc zone north of 40°S and complete partitioning to the south. The displacement gradient along the intra-arc zone results in margin-parallel shortening of the fore arc.

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Section: B2 Drainage Analysismentioning

confidence: 99%

Kinematic constraints on intra‐arc shear and strain partitioning in the southern Andes between 38°S and 42°S latitude

2006

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“…Not surprisingly, these areas generally correspond with regions of low topographic residual, although all areas of low residual do not necessarily correspond with these paleo-surfaces. These criteria were similar to those applied in constructing a morphometric "summit level" map (e.g., [34,35]). …”

Section: Neogene Paleosurface and Uplift Along The Restraining Bendmentioning

confidence: 99%

Late Cenozoic uplift along the northern Dead Sea transform in Lebanon and Syria

Gomez

Khawlie

Tabet

et al. 2006

Earth and Planetary Science Letters

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“…Les travaux effectués sur la tectonique mio-pliocène et quaternaire de la péninsule de Tanger montrent l'importance de ces directions dans la poursuite de la structuration de cette dernière [15], [19], [20]. Ceci est attesté aussi par le fait que ses failles ont d'une part guidé le tracé du réseau hydrographique [23] et d'autre part montrent une relation avec la répartition de l'activité sismique dans la péninsule de Tanger [22]. Sur le terrain, on a remarqué que des mouvements de terrain se situent le long de certains failles, à proximité de certains noeuds tectoniques (NE-SW et NW-SE) et de zone de broyage des failles (cisaillements et/ou décrochements) formée de matériaux fragilisés et de résurgences.…”

Section: Fig 7 Carte De Densité De Fracturationunclassified

Landslide susceptibility mapping using AHP method and GIS in the peninsula of Tangier (Rif-northern morocco)

et al. 2018

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Abstract. The peninsula of Tangier (Northern Morocco) is submitted to a significant number of landslides each year due to its lithological, structural and morphological complexity; which cause a lot of damage to the road network and other related infrastructure. The main objective of this study is to create a landslide indexed susceptibility map of Tangier peninsula, by using AHP ( Analytical Hierarchical Processes) model to calculate each factor's weight. The work is made via GIS by using an ArcGIS AHP extension. In the current research, First of all, the four main types of landslides were identified and mapped from existing documents, works and new data which came from either remote sensing or fieldwork. Lithology, land use, slope, hypsometry, exposure, fault density and drainage network density were used as main parameters controlling the occurrence of the selected landslides. Then, afterward, each parameter is classified into a number of significant classes based on their relative influence on gravitational movement genesis. The validity of the susceptibility zoning map which is obtained through linear summation of indexed maps was tested and cross-checked by inventoried and studied landslides. The obtained landslide susceptibility map constitutes a powerful decision-making tool in land-use planning, i.e. New highways, secondary highways, railways, etc. within the national development program in the Northern provinces. It is a necessary step for the landslides hazard assessment in the Tangier peninsula in northern Morocco.

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Investigation of active faults in Morocco using morphometric methods and drainage pattern analysis

Cited by 47 publications

References 11 publications

Kinematic constraints on intra‐arc shear and strain partitioning in the southern Andes between 38°S and 42°S latitude

Kinematic constraints on intra‐arc shear and strain partitioning in the southern Andes between 38°S and 42°S latitude

Late Cenozoic uplift along the northern Dead Sea transform in Lebanon and Syria

Landslide susceptibility mapping using AHP method and GIS in the peninsula of Tangier (Rif-northern morocco)

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