Title: Regional significance of non-cylindrical folding in the northwestern part of the High- Ardenne slate belt (Redu-Daverdisse, Belgium)
Authors: Jacques, Dominique ×
Derez, Tine
Muchez, Philippe
Sintubin, Manuel #
Issue Date: 6-Jun-2014
Publisher: Université de Liège
Series Title: Geologica Belgica vol:17 issue:3-4 pages:252-267
Abstract: Regional mapping and a detailed geometric analysis of complex, mixed brittle-ductile, fold-related accommodation
structures, along the well-exposed banks of the Lesse river between Redu and Daverdisse (Belgium), reveal that the finite strain in
the predominantly incompetent Lower Devonian rock sequence in the northwestern part of the High-Ardenne slate belt deviates from
pure flattening and approximates plane strain. This finite strain is materialised by different manifestations of non-cylindrical folding,
i.e. regional en-echelon and periclinal fold geometries, mesoscale non-cylindrical folds with hinges showing variable plunges, oblique
flexural slip and locally a non-axial planar, transecting cleavage. The observed non-cylindrical folding fits in the regional framework
of the Meuse Valley Recess, a transpressional corridor in the Ardenne allochthon that developed on top of a buried, buttressing oblique
ramp in the pre-structural basement. Differential propagation in the overriding Ardenne allochthonuous domain to the east and west of
this buttressing oblique ramp led to a component of lateral shortening on top of the ramp, resulting in the rotation of the overall structural
grain and the development of en-echelon, non-cylindrical folds. Our study suggests that the Meuse Valley Recess can be continued
towards the southeast, at least affecting the northern parts of the High-Ardenne slate belt.
ISSN: 1374-8505
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Earth and Environmental Sciences
Division of Geology
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Jacques et al. (2014) GB paper.pdf Published 5543KbAdobe PDFView/Open


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science