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Geological Society, London, Special Publications; 2002; v. 201; p. 327-343;
DOI: 10.1144/GSL.SP.2002.201.01.16
© 2002 Geological Society of London

Seismic Traverses and Deep Crustal Structure

A compressional wedge model for the Lower Palaeozoic Anglo-Brabant Belt (Belgium) based on potential field data

Manuel Sintubin1 & Michel Everaerts2

1 Structural Geology & Tectonics Group, Katholieke Universiteit Leuven, Redingenstraat 16, B-3000 Leuven, Belgium manuel.sintubin{at}geo.kuleuven.ac.be
2 Observatoire Royal de Belgique, 3 Avenue Circulaire, B-1180 Uccle, Belgium

Structural field observations only allow kinematic inferences to be made for the southern extremity of the predominantly concealed Lower Palaeozoic Anglo-Brabant Belt. On the other hand potential field data (aeromagnetic and Bouguer anomaly maps), enable the field of vision to be enlarged. They not only corroborate the kinematics derived from structural field observations; they also reveal possible key players in the late Silurian to early Devonian deformation event causing the observed orogenic architecture.

This integrated approach has led to a compressional wedge model for the Brabant Massif. It is also proposed that crystalline basement blocks, most probably of Precambrian age, controlled the kinematics. Finally, it is suggested that the development of rift or pull-apart basins in a transtensional intracontinental setting during the Cambrian may have been crucial in the subsequent deformation history of the Anglo-Brabant Belt.





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[Abstract] [PDF]