Journal
COMPTES RENDUS GEOSCIENCE
Volume 341, Issue 2-3, Pages 156-173Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crte.2008.11.012
Keywords
Early Palaeozoic; Rheic ocean; Rhenohercynian ocean; Brabantian; Ardennian; Eovariscan; Unconformity
Categories
Funding
- Fonds voor Wetenschappelijk Onderzoek - Vlaanderen (FWO - Vlaanderen)
- [6.0271.05]
- [KAN1.5.128.05]
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The Lower Palaeozoic rocks exposed in the Brabant-Ardenne region (Belgium, France) recorded the Early Palaeozoic history on the southern margin of the perigondwanan microcontinent of Avalonia, north of the Rheic suture. These rocks crop out in the Brabant basement and in the Ardenne basement inliers within the Variscan Ardenne allochthon. The two main unconformities are classically associated with distinct orogenic episodes, the Late Ordovician Ardennian event and the Early Devonian Brabantian event. A review of the current state-of-knowledge with respect to the reconstruction of Early Palaeozoic geodynamics in the Brabant-Ardenne region is presented. It is demonstrated that an unconformity, does not necessarily represent an orogenic event, and that the hiatus related to an unconformity does not necessarily coincide with tectonic activity, especially when tectonism is diachronous in nature. The former applies to the Ardennian unconformity, while the latter applies to the Brabantian unconformity. Finally, the well-constrained Brabantian orogeny, as well as the Ardenne-Eifel basin development, is tentatively framed within the Early Palaeozoic geodynamic context of the northern margin of the Rheic realm. By doing so, it is shown that the Brabant-Ardenne region links, both in space and time, the Rheic and Rhenohercynian ocean. To cite this article: M. Sintubin et al., C. R. Geoscience 341 (2009). (C) 2008 Academic des sciences. Published by Elsevier Masson SAS. All rights reserved.
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