論文

査読有り
2016年11月

Paleomagnetism of the Central Iberian curve's putative hinge: Too many oroclines in the Iberian Variscides

GONDWANA RESEARCH
  • Daniel Pastor-Galan
  • ,
  • Mark J. Dekkers
  • ,
  • Gabriel Gutierrez-Alonso
  • ,
  • Daniel Brouwer
  • ,
  • Thomas Groenewegen
  • ,
  • Wout Krijgsman
  • ,
  • Javier Fernandez-Lozano
  • ,
  • Mariano Yenes
  • ,
  • Fernando Alvarez-Lobato

39
開始ページ
96
終了ページ
113
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.gr.2016.06.016
出版者・発行元
ELSEVIER SCIENCE BV

The Variscan mountain belt in Iberia defines a large "S" shape with the Cantabrian Orocline in the north and the Central Iberian curve, an alleged orocline belt of opposite curvature, to the south. The Cantabrian Orocline is kinematically well constrained, but the geometry and kinematics of the Central Iberian curve are still controversial. Here, we investigate the kinematics of the Central Iberian curve, which plays an important role in the amalgamation of Pangea since it may have accommodated much of the post-collisional deformation. We have performed a paleomagnetic study on Carboniferous granitoids and Cambrian limestones within the hinge of the curve. Our paleomagnetic and rock magnetic results show a primary magnetization in the granitoids and a widespread Carboniferous remagnetization of the limestones. Syn-kinematic granitoids show ca.70 degrees counter-clockwise rotations consistent with the southern limb of the Cantabrian Orocline. Post-kinematic granitoids and Cambrian limestones show consistent inclinations but very scattered declinations suggesting that they were magnetized coevally to and after the similar to 70 degrees rotation. Our results show no differential rotations between northern, southern limb and the hinge zone. Therefore, we discard a late Carboniferous oroclinal origin for the Central Iberian curve. (C) 2016 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.

Web of Science ® 被引用回数 : 21

リンク情報
DOI
https://doi.org/10.1016/j.gr.2016.06.016
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000397872900006&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-84994338829&partnerID=MN8TOARS
URL
http://orcid.org/0000-0002-0226-2739

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