U-Pb geochronolgy of the deformed Juzbado Granite (Salamanca, NW Spain)

  1. Gabriel Gutiérrez-Alonso 1
  2. Alicia López-Carmona 1
  3. Javier Fernández-Suárez 2
  4. Jerónimo Jablonski 3
  5. Mandy Hofmann 4
  6. Andreas Gärtner 4
  1. 1 Universidad de Salamanca, España
  2. 2 Universidad Complutense, España
  3. 3 Museo de la Falla de Juzbado, España
  4. 4 Senckenberg Naturhistorische Sammlungen Dresden, Alemania
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Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2018

Issue Title: Comunicaciones presentadas en la LXIV Sesión Científica / Ávila, 1 de Junio de 2018

Issue: 64

Pages: 163-166

Type: Article

DIALNET GOOGLE SCHOLAR lock_openArias Montano editor

More publications in: Geogaceta

Abstract

This paper reports a study of the crystallization age of the deformed Juzbado Granite through LA-ICP-MS U-Pb geochronology. Seven zircon grains were dated providing ages ranging from 340 to 2500 Ma. The U-Pb age data supply a maximum crystallization age of 340 Ma and insights into the nature of potential source rocks. The ages of the inherited zircon grains or xenocrysts are in agreement with the zircon contents found in the potential source rocks. Given that the intrusion is deformed by the fabric related to the Juzbado-Penalva do Castelo shear zone, its minimum age must be ca. 308 Ma. Based on the petrological similarities with other granite bodies in the surrounding area (Tormes anatectic dome) its age is likely to be around 320 Ma.

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Funding information

CGL-2016-76438-P to JFS. ALC also was funded by a “Juan de la Cierva” grant (FJCI-2014-20740). JFS acknowledges support from research project CGL-2016- 76438-P (Spanish Ministry of Economy and Competitiveness). Assistance by U. Linnemann and R. Krause at the Sencken- berg Naturhistorische Sammlungen Dres den is greatly appreciated. Elena Núñez Guerrero is thanked for assistance in zircon processing and X. Arroyo for his help with CL imaging. Insightful reviews by M. López-Plaza and A. Rubio-Ordóñez are greatly acknowledged.

Funders

    • CGL2013-46061-P
Data source: Dialnet