EGU2011-13984.pdf

EGU2011-13984.pdf
Preview of EGU2011-13984
🔗 Source: meetingorganizer.copernicus.org
📊 Size: 39 KB
📄 Pages: 1 page
⬇️ Downloads: 113

Summary

U-Pb zircon geochronology of gneisses in the Betic Cordillera, Spain, reveals evidence of recycled Variscan crust during the Alpine orogeny. The gneisses have ages between 280-300 Ma, suggesting a single magmatic pulse, and resemble peraluminous granitic bodies from the Variscan Orogen. Zircons in host pelitic metasediments have older ages (336-2050 Ma), indicating recycling of Early Carboniferous granites and correlation with magmatism in the West African Craton and Peri-Gondwana European Variscan Orogen. The new data propose a revised chronostratigraphy of the Nevado-Filábride Complex, suggesting it may consist of Palaeozoic or older rocks, and indicate independent metamorphic and tectonic evolutions for the Nevado-Filábride and Alpujárride complexes.

Description

U-Pb zircon geochronology of gneisses in the Betic Cordillera, Spain, reveals evidence of recycled Variscan crust during the Alpine orogeny.

Technical Information

  • File Format: PDF
  • File Size: 39 KB
  • Pages: 1
  • Language: EN
  • Total Downloads: 113
  • Last Updated: 1 week ago

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