Paleomagnetism in the northeastern Central Massif (France): evidence for Carboniferous rotations of the Hercynian orogenic belt

Details Paleomagnetism in the northeastern Central Massif (France): evidence for Carboniferous rotations of the Hercynian orogenic belt Paleomagnetism in the northeastern Central Massif (France): evidence for Carboniferous rotations of the Hercynian orogenic belt

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..55...48e&link_type=abstract

Earth and Planetary Science Letters, Volume 55, Issue 1, p. 48-52.

Physics

12

Scientific paper

A paleomagnetic study has been carried out on Visean volcanics of northeastern Central Massif. Standard paleomagnetic techniques have been applied to a hundred of samples. Alternating field and thermal demagnetizations yield an unusual direction, D=78°, I=-2°, α95=12° for the 9 best sites. As the polarity is unknown, two motions can explain this direction, either a clockwise rotation of about 45° or an anticlockwise of 135° relative to the Armorican Massif. In both cases, the paleomagnetic data reveal important deformations of the Hercynian orogenic belt probably due to strike slips in middle Carboniferous times.

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