Timing of rodingitization at the Ronda peridotites (Betic Cordilleras, Spain)
- J. J. Esteban
- J. Cuevas
- D. Seward
- J. M. Tubía
ISSN: 0213-683X
Année de publication: 2003
Número: 34
Pages: 23-26
Type: Article
D'autres publications dans: Geogaceta
Résumé
This work reports the timing of the rodingitization process of granitic dykes intrusive into the Ronda Peridotites. Representative fission-track ages on zircon and apatite from rodingitized dykes, in combination with cooling rates suggested for the Alpujarride Complex (Monié et al., 1994; Sánchez-Rodríguez, 1998; Sosson et al., 1998) point to a minimum age of 16.8 ± 1.8 Ma for the rodingitization process. By extrapolating to the timing of formation of the highest stability limit of the serpentine minerals (500°C) we propose that the serpentinization of Ronda peridotites was a continuous process lasting at least for 2.2 Ma, from 19.1 to 16.9 Ma.