Strain analysis of Late Ordovician tectonic events in the In-Tahouite and Tamadjert Formations (Tassili-n-Ajjers area, Algeria)

Zazoun, Réda Samy; Mahdjoub, Yamina

doi:10.1016/j.jafrearsci.2011.02.003

Cited by 8 publications

(2 citation statements)

References 66 publications

(80 reference statements)

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“…They were albitized during the Tremadocian, like in Ait Oklan and Tihoiiarene. The Ordovician episodes are associated with transtensional to extensional movements along north-south trending shear zones, evidenced by the so-called "Arenigian" and "Taconic" unconformities (Zazoun and Mahdjoub, 2011).…”

Section: Late Hydrothermal Episodesmentioning

confidence: 99%

Zircon U–Pb and Lu–Hf isotopic systems in ediacaran to Fortunian “Taourirt” granitic ring complexes (Silet and In Tedeini terranes, Tuareg shield, Algeria)

Azzouni-Sekkal

Bonin

Bowden

et al. 2020

Journal of African Earth Sciences

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Section: Late Hydrothermal Episodesmentioning

confidence: 99%

Zircon U–Pb and Lu–Hf isotopic systems in ediacaran to Fortunian “Taourirt” granitic ring complexes (Silet and In Tedeini terranes, Tuareg shield, Algeria)

Azzouni-Sekkal

Bonin

Bowden

et al. 2020

Journal of African Earth Sciences

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“…The Cambrian-Ordovician extension is documented on arches (Arak-Foum Belrem, Azzel Matti, Amguid El Biod, Tihemboka, Gargaf, Murizidié, Dor El Gussa, etc.) of the Saharan Platform by synsedimentary normal faults, reduced sedimentary successions (Bennacef et al, 1971;Beuf et al, 1968aBeuf et al, , b, 1971Beuf and Montadert, 1962;Borocco and Nyssen, 1959;Claracq et al, 1958;Echikh, 1998;Eschard et al, 2010;Fabre, 1988;Ghienne et al, 2003Ghienne et al, , 2013Zazoun and Mahdjoub, 2011), and by stratigraphic hiatuses (Mélou et al, Figure 11. SE-W cross section between the Arak-Foum Belrem Arch, the Mouydir Basin, and the Amguid El Biod Arch.…”

Section: Sequential Framework and Unconformitiesmentioning

confidence: 99%

Influence of basement heterogeneity on the architecture of low subsidence rate Paleozoic intracratonic basins (Reggane, Ahnet, Mouydir and Illizi basins, Hoggar Massif)

et al. 2018

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Abstract. The Paleozoic intracratonic North African Platform is characterized by an association of arches (ridges, domes, swells, or paleo-highs) and low subsidence rate syncline basins of different wavelengths (75–620 km). The Reggane, Ahnet, Mouydir and Illizi basins are successively delimited from east to west by the Amguid El Biod, Arak-Foum Belrem, and Azzel Matti arches. Through the analysis of new unpublished geological data (i.e., satellite images, well logs, seismic lines), the deposits associated with these arches and syncline basins exhibit thickness variations and facies changes ranging from continental to marine environments. The arches are characterized by thin amalgamated deposits with condensed and erosional surfaces, whereas the syncline basins exhibit thicker and well-preserved successions. In addition, the vertical facies succession evolves from thin Silurian to Givetian deposits into thick Upper Devonian sediments. Synsedimentary structures and major unconformities are related to several tectonic events such as the Cambrian–Ordovician extension, the Ordovician–Silurian glacial rebound, the Silurian–Devonian Caledonian extension/compression, the late Devonian extension/compression, and the Hercynian compression. Locally, deformation is characterized by near-vertical planar normal faults responsible for horst and graben structuring associated with folding during the Cambrian–Ordovician–Silurian period. These structures may have been inverted or reactivated during the Devonian (i.e., Caledonian, Mid–Late Devonian) compression and the Carboniferous (i.e., pre-Hercynian to Hercynian). Additionally, basement characterization from geological and geophysics data (aeromagnetic and gravity maps), shows an interesting age-dependent zonation of the terranes which are bounded by mega-shear zones within the arches–basins framework. The old terranes are situated under arches while the young terranes are located under the basins depocenter. This structural framework results from the accretion of Archean and Proterozoic terranes inherited from former orogeny (e.g., Pan-African orogeny 900–520 Ma). Therefore, the sedimentary infilling pattern and the nature of deformation result from the repeated slow Paleozoic reactivation of Precambrian terranes bounded by subvertical lithospheric fault systems. Alternating periods of tectonic quiescence and low-rate subsidence acceleration associated with extension and local inversion tectonics correspond to a succession of Paleozoic geodynamic events (i.e., far-field orogenic belt, glaciation).

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The far-field interplay between peripheral Cenerian Orogeny and inner north Gondwanan hinterland: Cambro-Ordovician siliciclastic veneer and pre-Hirnantian unconformities (Sahara, central Libya)

Spahić,

Cocco,

Tančić

2024

Earth-Science Reviews

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Strain analysis of Late Ordovician tectonic events in the In-Tahouite and Tamadjert Formations (Tassili-n-Ajjers area, Algeria)

Cited by 8 publications

References 66 publications

Zircon U–Pb and Lu–Hf isotopic systems in ediacaran to Fortunian “Taourirt” granitic ring complexes (Silet and In Tedeini terranes, Tuareg shield, Algeria)

Zircon U–Pb and Lu–Hf isotopic systems in ediacaran to Fortunian “Taourirt” granitic ring complexes (Silet and In Tedeini terranes, Tuareg shield, Algeria)

Influence of basement heterogeneity on the architecture of low subsidence rate Paleozoic intracratonic basins (Reggane, Ahnet, Mouydir and Illizi basins, Hoggar Massif)

The far-field interplay between peripheral Cenerian Orogeny and inner north Gondwanan hinterland: Cambro-Ordovician siliciclastic veneer and pre-Hirnantian unconformities (Sahara, central Libya)

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