U-Pb zircon age and tectonic meaning of the Cardenchosa pluton (Ossa-Morena Zone)

  1. A. Azor 1
  2. J.F. Simancas 1
  3. D.J. Martínez Poyatos 1
  4. P. Montero 1
  5. F. González Lodeiro 1
  6. I. Pérez-Cáceres
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2016

Issue Title: IX CONGRESO GEOLÓGICO DE ESPAÑA

Issue: 16

Pages: 23-26

Type: Article

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Abstract

The Cardenchosa pluton crops out in the northernmost Ossa-Morena Zone, immediately to the south of the boundary with the Central Iberian Zone. This pluton is made up of two granitic facies. Despite the lack of geochronological data, this intrusive body has been traditionally attributed to the Carboniferous magmatism of the so-called “Los Ojuelos Igneous Complex”. This work provides with the first radiometric age of the Cardenchosa pluton, obtained by Sensitive High Resolution Ion Microprobe U-Pb zircon dating from a sample of the central facies. This sample yielded an Ordovician age of 478-480 Ma, which is interpreted as corresponding to the intrusion of the pluton. These new data indicate that the Cardenchosa pluton belongs to the widespread Cambrian-Ordovician igneous suite outcropping in the Ossa-Morena and Central Iberian Zones, attesting a tectonic setting of continental rifting at the onset of the Variscan cycle.

Data source: Dialnet