Apports de la gravimétrie dans la caractérisation des structures éffondrées dans la région de Nebeur (Nord Ouest de la Tunisie)

Gravity data were analysed in the Nebeur area to better understand the organization of its underlying structures. Analysis of the gravity data included the computation of a complete Bouguer anomaly, upward continuations, as well as residual and derivative maps. Comparison of gravity maps, geological...

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Bibliographic Details
Published in:Swiss Journal of geosciences 2008-05, Vol.101 (1), p.17-27
Main Authors: Nasr, Imen Hamdi, Salem, Abdelhamid Ben, Inoubli, Mohamed Hedi, Dhifi, Jamel, Alouani, R., Chaqui, abdelhak, Perthuisot, Vincent
Format: Article
Language:ger
Subjects:
Earth and Environmental Science
Earth Sciences
Geology
Geophysics
Gravimetry
Gravity
Plate tectonics
Seismology
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Summary:Gravity data were analysed in the Nebeur area to better understand the organization of its underlying structures. Analysis of the gravity data included the computation of a complete Bouguer anomaly, upward continuations, as well as residual and derivative maps. Comparison of gravity maps, geological and structural maps allows the identification of major structural directions and trends of the study area. It confirms some structural elements gathered from outcrops and defines new ones. In particular, the Oued Tessa - Bled el Ghorfa area that is characterized by a negative gravity anomaly, corresponds to a collapsed structure limited by two NW-SE fault systems. This result extends to north the graben zone that is described from outcrops. [PUBLICATION ABSTRACT]
ISSN:1661-8726
1661-8734
DOI:10.1007/s00015-008-1255-3