Extensional orogenic collapse captured by strike-slip tectonics: Constraints from structural geology and UPb geochronology of the Pinhel shear zone (Variscan orogen, Iberian Massif)
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- 作者：Rubé ; n Dí ; ez Ferná ; ndeza ; b ; georuben@usal.es" class="auth_mail" title="E-mail the corresponding author ; Manuel Francisco Pereiraa
- 关键词：Microstructural analysis ; Fold interference ; Migmatites ; Deformed granitoids ; SHRIMP UPb zircon dating ; Central Iberian Zone
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：22 November 2016
- 年：2016
- 卷：691
- 期：part_PB
- 页码：290-310
- 全文大小：15486 K
文摘
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The sequence of Variscan deformation phases in Central Iberia is redefined.
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A new major extensional shear zone has been identified in the Iberian Massif.
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Extensional deformation occurred together with migmatization and granitoid intrusion.
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Dating of syn-kinematic granitoids constrains extensional deformation to 331–317 Ma.
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Strike-slip post-extensional shearing reworked previous structural record intensely.