Main structural lineaments of north-eastern Morocco derived from gravity and aeromagnetic data

Gout, Radia El; Khattach, Driss; Houari, Mohammed-Rachid; Kaufmann, Olivier; Aqil, Hicham

doi:10.1016/j.jafrearsci.2010.03.006

Cited by 27 publications

(9 citation statements)

References 27 publications

(51 reference statements)

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“…The N-S and E-W bounded fault blocks are secondary faults which have influenced stratigraphy and major tectonic elements or as shears which controlled local features. (EI Gout, Khattach, Houari, Kaufmann, & Aqil, 2010) and (De Castro, 2011) mapped family of faults with similar trends that control depositional history of the sedimentary basin in north-eastern Morocco and Potiguar rift basin in north-east Brazil respectively. The N-S trending structures were probably induced by a combination of differential subsidence across a fault zone and by local uplift due to wrench movements.…”

Section: Basement Architecture and Tectonicsmentioning

confidence: 99%

Interpretation of Regional Magnetic Field Data Offshore Niger Delta Reveals Relationship between Deep Basement Architecture and Hydrocarbon Target

Okiwelu¹,

Ofrey-Kulo²,

Ude³

2012

ESR

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Directional horizontal derivatives, analytic signal, filtering of magnetic data sets and 3D magnetic modelling incorporating induced and remanent magnetization were performed on low resolution aeromagnetic data to unravel the basement structure and its relationship with hydrocarbon target offshore Niger Delta basin. Forward modelling of the residual magnetic data gave discrete depth values that were exploited to compile the depth to basement (thickness of the sedimentary section) map which highlighted deep depocenters, high blocks and major sedimentary fairways in the study area. The uplifted blocks created the arches while downdropped ones produced the depocenters. The depth to the basement map revealed basement paleotopography which resulted from movement along fault zones. The transformed/enhanced data revealed three potential stress regimes trending NE-SW, N-S and E-W. The NE-SW lineaments are shear zones, more dominant and indicate possible extensions within the African continent of Charcot and Chain oceanic fracture zones. The E-W lineaments are revealed not only in the enhanced maps but also in the total magnetic intensity and residual data sets because they are associated with dykes. The N-S structures are very subtle and are therefore highlighted only in the transformed data. In combination with the E-W structures they are brittle and reactivated structures associated with faults and have significant implications for the tectonic evolution of the Niger Delta and its basin extensions. The transformed data sets, depth to basement map and residual data strongly suggest that jostling of the basement blocks has influenced deposition in the Niger Delta basin. The structural highs (basement highs), basement lows (structural lows) and steep/faulted basement flanks are attractive sites for oil and gas accumulation.

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Section: Basement Architecture and Tectonicsmentioning

confidence: 99%

Interpretation of Regional Magnetic Field Data Offshore Niger Delta Reveals Relationship between Deep Basement Architecture and Hydrocarbon Target

Okiwelu¹,

Ofrey-Kulo²,

Ude³

2012

ESR

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“…The N-S and E-W bounded fault blocks are secondary faults which must have influenced stratigraphy and major tectonic elements or as shears which controlled local features. [39] and [40] mapped family of faults with similar trends that control depositional history of the sedimentary basin in north-eastern Morocco and Potiguar rift basin in northeast Brazil respectively. The N-S trending structures were probably induced by a combination of differential subsidence across a fault zone and by local uplift due to wrench movements.…”

Section: Discussionmentioning

confidence: 99%

3D Modelling and Basement Tectonics of the Niger Delta Basin from Aeromagnetic Data

Okiwelu¹,

Ude²

2012

Tectonics - Recent Advances

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“…Le pendage des contacts géologiques peut être déterminé par le prolongement vers le Haut de la carte du gradient horizontal à divers altitude [19] Les niveaux de prolongement les plus élevés correspondent au structures géologiques les plus profondes [18] ; [20].…”

Section: 12) Le Gradient Horizontalunclassified

Contribution of Gravimetry to the hydrogeological recognition of the area of Wadi Righ –Ouargla

Melouah

Zeddouri

2017

J. Fundam and Appl Sci.

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Gravimetry is a geophysical methods often used in oil exploration and mining research but rarely in the hydrogeological field, the aim of this work is to exploit the gravimetric data to develop a structural model of the region of Oued Righ -Ouargla has less than 1,000 m depth and perform a litho-stratigraphic modeling of subsurface formations to assess the ability of a karst formation of the terminal complex water table (Eocene Senonian).Multiple filtrations and signal processing techniques for gravimetric datas were operated such as the Euler Déconvolution, the analytical signal and the horizontal gradient.The results were used to evaluate the potential of karstification in the area and to model the phenomenon; the subsurface structural mapping has also led to the relationship between the well productivity and network of faults and fractures.

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Main structural lineaments of north-eastern Morocco derived from gravity and aeromagnetic data

Cited by 27 publications

References 27 publications

Interpretation of Regional Magnetic Field Data Offshore Niger Delta Reveals Relationship between Deep Basement Architecture and Hydrocarbon Target

Interpretation of Regional Magnetic Field Data Offshore Niger Delta Reveals Relationship between Deep Basement Architecture and Hydrocarbon Target

3D Modelling and Basement Tectonics of the Niger Delta Basin from Aeromagnetic Data

Contribution of Gravimetry to the hydrogeological recognition of the area of Wadi Righ –Ouargla

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