Interconnection salt diapir-allochthonous salt sheet in northern Tunisia: The Lansarine-Baoula case study
| Autor: | Chahreddine Naji, Zayneb Amri, Olivier Bellier, Amara Masrouhi |
|---|---|
| Přispěvatelé: | Université de Carthage - University of Carthage, King Abdulaziz University, Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR11-IDEX-0001-02Tunisian Ministry of Higher Education and Scientific Research (CERTE, Geo-resources Laboratory)French Ministry of Foreign Affairs grant through French Embassy in Tunisia (CMCU program), ANR-11-LABX-0061,OTMed,Objectif Terre : Bassin Méditerranéen(2011), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
geography
geography.geographical_feature_category Mini-basinThrust 010504 meteorology & atmospheric sciences Aptian Allochthonous salt sheets Geochemistry [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Geology Fault (geology) Diapir Structural basin North tunisian atlas 010502 geochemistry & geophysics 01 natural sciences Structural complexity Passive margin Sedimentary rock Cenozoic 0105 earth and related environmental sciences Earth-Surface Processes |
| Zdroj: | Journal of African Earth Sciences Journal of African Earth Sciences, 2020, 170, pp.103876. ⟨10.1016/j.jafrearsci.2020.103876⟩ Journal of African Earth Sciences, Elsevier, 2020, 170, pp.103876. ⟨10.1016/j.jafrearsci.2020.103876⟩ |
| ISSN: | 1464-343X 1879-1956 |
| DOI: | 10.1016/j.jafrearsci.2020.103876⟩ |
| Popis: | International audience; Surface and subsurface data are used to illustrate the halokinetic style, structural evolution and kinematics of the Lansarine–Baouala salt structure in the Alpine domain of Tunisia. It corresponds to a salt structure showing a large salt canopy overhanging buried diapir. The salt structure is located along the main fault systems, inherited from the southern Tethyan passive margin periods. The Northern domain of Tunisia is undergoing diapirism, which has been recognized as active during the Upper Aptian and Lower Albian periods. Above the diapir apex, salt flows outward and spreads by gravity downslope. A minibasin has formed during this period of salt outward evacuation. The minibasin has a thickness practically correlated to the budget of salt evacuation toward the diapiric structure. During Cenozoic times, compressional deformation stages do not reflect active diapirism. The Lansarine–Baouala salt structure, consisting of connected salt sheets, was passively transported on the Southeast-verging major thrusts that are deeply rooted in the salt beneath the Mateur basin. The Northern Atlas of Tunisia reveals, as many others salt provinces, an interconnection of salt diapirs and significant laterally spreading allochthonous salt sheets (canopies?). In this domain, the inherited allochthonous Triassic salt sheets interlayered within recent series and connected to buried diapir have a significant role in the shallow structural complexity observed in the sedimentary cover during the subsequent contractional events. |
| Databáze: | OpenAIRE |
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