Oroclinal bending and evidence against the Pangea megashear: The Cantabria-Asturias arc (northern Spain)

Research Article| November 01, 2001 Oroclinal bending and evidence against the Pangea megashear: The Cantabria-Asturias arc (northern Spain) Arlo B. Weil; Arlo B. Weil 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Search for other works by this author on: GSW Google Scholar Rob Van der Voo; Rob Van der Voo 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Search for other works by this author on: GSW Google Scholar Ben A. van der Pluijm Ben A. van der Pluijm 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Arlo B. Weil 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Rob Van der Voo 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Ben A. van der Pluijm 1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48103, USA Publisher: Geological Society of America Received: 02 Feb 2001 Revision Received: 12 Jun 2001 Accepted: 05 Jul 2001 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (11): 991–994. https://doi.org/10.1130/0091-7613(2001)0292.0.CO;2 Article history Received: 02 Feb 2001 Revision Received: 12 Jun 2001 Accepted: 05 Jul 2001 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Arlo B. Weil, Rob Van der Voo, Ben A. van der Pluijm; Oroclinal bending and evidence against the Pangea megashear: The Cantabria-Asturias arc (northern Spain). Geology 2001;; 29 (11): 991–994. doi: https://doi.org/10.1130/0091-7613(2001)0292.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Cantabria-Asturias arc of southwestern Europe is a highly curved Variscan belt that formed along the ancient plate boundary between Gondwana and Laurussia during the assembly of Pangea. New paleomagnetic data from 59 sites in the southern limb of the arc were combined with previously published data from 109 sites to determine the evolution of the arc. A previously unrecognized postrotation magnetization is found in the southern limb, refuting earlier models of arc formation that concluded secondary rotation of only 50% of present-day arc curvature. The new data show that the arc underwent true (100%) oroclinal bending of an originally linear belt in a two-stage tectonic history. This history represents two regional compression phases: (1) east-west in the late Carboniferous (Pennsylvanian) and (2) north-south in the Permian (both in present-day coordinates). The north-south compression phase coincides with the northward movement of Gondwana and its final collision with Laurussia. This tectonic scenario argues against an indentor scenario, and does not support a 3500 km dextral megashear proposed in earlier reconstructions. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.