Abstract
Abstract A paleomagnetic study was conducted on the Paleozoic sedimentary rocks of the Ardenno-Rhenish Massif and the Brabant Massif. Lower Carboniferous and Middle Devonian carbonates in the Dinant Synclinorium and Inde Syncline carry a thermoviscous remagnetization residing in magnetite. Lower Devonian red beds in the Dinant Synclinorium carry a chemoremanent remagnetization residing in hematite. The sediments were remagnetized by burial metamorphism during the Asturian phase of the Variscan orogeny. With a few exceptions, in all formations the magnetizations are of inverse polarity, corresponding to the Kiaman paleofield in the Permo-Carboniferous. The virtual geomagnetic poles (VGPs) of the Inde Syncline agree with the Permo-Carboniferous pole position of Europe. VGPs of the Dinant Synclinorium which deviate from the Permo-Carboniferous reference direction are due to syntectonic remagnetizations and subsequent 10–20° (maximum 40°) dextral shear deformations. These deformations can be correlated with the northwards overthrusting of the Dinant Nappe. For the Inde Syncline post-Asturian rotational deformations can be excluded. Should a N-S transport of this part of the Dinant Nappe not have occurred, the declination pattern indicates that the western part of the Dinant Nappe was transported further north than the eastern part.
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