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Abstract

Summary

Paleomagnetim of the Paleozoic formations in the Illizi Basin evidenced two distinct magnetization components. Using African APWP shows remagnetizations of Cenozoic and Permian ages. The distribution of the directions of these components indicates that the Permian one is uniquely identified in three sampled sites. Its preservation may suggests a relationship between lithology and tectonic evolution. Our interpretation of potential data has allowed corroborative evidence supporting these assumptions. This interpretation is realized by cross-checking the results of each potential field transforms, which have been applied to the Bouguer gravity and total intensity aeromagnetic maps. Consequently, the obtained results allow locating horizontally the inferred zone boundaries that assuming essentially vertical contact, which is underlined globally by prevailing submeridian lineaments with higher amplitude magnetic and gravimetric anomalies. Interestingly, these submeridian uplifts are typically associated with fluids migration at origin of remagnetization and controlled by fault-related structures leading to preserve or erase the Permian component. Moreover, uplift and deformation in south of the Illizi basin, around the Hoggar area, are associated with the emplacement of thick basaltic trapps. Therefore, due to volcanism, fluids from the Hoggar could have been enriched with chemically active components that affected the sampled Paleozoic formations of the Illizi basin.

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/content/papers/10.3997/2214-4609.201902496
2019-09-08
2024-04-27

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201902496
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Persistent Permian Remagnetization in the Paleozoic Formations of the Illizi Basin (Algeria) - Magnetic and Gravimetric Constraints
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201902496
/content/papers/10.3997/2214-4609.201902496
/content/papers/10.3997/2214-4609.201902496
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