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The onset of the assembly of Pangaea in NW Iberia: Constraints on the kinematics of continental subduction

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Díez Fernández, Rubén and Martínez Catalán, José Ramón and Arenas Martín, Ricardo and Abati Gómez, Jacobo (2012) The onset of the assembly of Pangaea in NW Iberia: Constraints on the kinematics of continental subduction. Gondwana research, 22 . pp. 20-25. ISSN 1342-937X

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Official URL: http://www.journals.elsevier.com/gondwana-research/



Abstract

Excellent exposures of high-pressure rocks developed in a Variscan continental subduction system outcrop in
NW Iberia. The kinematic criteria provided by the high-pressure metamorphic fabrics can be used to infer
tectonic flow within the deep sections of this system. The dominant trend of the ductile flow is oblique to
that of the orogenic belt, indicating oblique continental subduction. Its azimuth, a few tens of degrees clockwise
relative to the orogenic trend, suggests dextral transpression between Gondwana and Laurussia during
continental subduction that took place at the Upper Devonian, and provides a consistent kinematic reference
for the earliest assembly of Pangaea in NW Iberia.


Item Type:Article
Uncontrolled Keywords:Assembly of Pangaea; Continental subduction kinematics: Tectonics; NW Iberia
Subjects:Sciences > Geology > Geodynamics
ID Code:17367
Deposited On:10 Dec 2012 13:33
Last Modified:10 Dec 2012 13:33

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