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Home Publications Permian Clockwise Rotations Of The Ebro And Corso-Sardinian Blocks During Iberian–Armorican Oroclinal Bending: Preliminary Paleomagnetic Data From The Catalan Coastal Range (NE Spain)

Permian clockwise rotations of the Ebro and Corso-Sardinian blocks during Iberian–Armorican oroclinal bending: Preliminary paleomagnetic data from the Catalan Coastal Range (NE Spain)

Publication Type Journal Article
Author Jean Edel, Karel Schulmann, Ondrej Lexa, Marc Diraison, Yves Géraud
Year of Publication 2015
Journal Tectonophysics
Volume 657
Number of Pages 172-186
ISSN Number 0040-1951
URL http://www.sciencedirect.com/science/article/pii/S0040195115003650
DOI http://dx.doi.org/10.1016/j.tecto.2015.07.002
Keywords Catalan coastal ranges, Corsica-Sardinia, Ebro block, Oroclinal bending, Paleomagnetism
Abstract

Abstract Paleomagnetic investigations of Early Permian and Triassic magmatic rocks from Catalan Coastal Ranges provide three magnetic directions which are interpreted as primary magnetizations and partly as overprints. The succession of magnetic directions is interpreted in terms of a succession of large-scale clockwise rotations, which bring the whole assembly of Pyrenees, Catalonia, Corsica-Sardinia and Maures-Esterel massifs from the southeast of the Massif Central to the west during Permian. This major movement is associated with clockwise rotation of northern limb of the Iberian orocline during Latest Carboniferous and Early Permian ( 305–290 Ma). Subsequently, Permian large-scale dextral transtensional–extensional shearing operated along Aquitanian Shear Belt between the Massif Central in the northeast and the Iberian Variscan massifs in the southwest. The latest phase of the rotation in the Late Permian-Early Triassic is associated with alkaline magmatism probably linked to Neo-Tethys opening activity in Western Europe.

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