Sulfate isotope compositions (d34S, d18O) and strontium isotopic ratios (87Sr/86Sr) of Triassic evaporites in the Betic Cordillera (SE Spain)

  1. Federico Ortí 1
  2. Alberto Pérez-López 45
  3. Javier García-Veigas 1
  4. Laura Rosell 1
  5. Dionisio I. Cendón 2
  6. Fernando Pérez-Valera 3
  1. 1 Universitat de Barcelona
    info

    Universitat de Barcelona

    Barcelona, España

    ROR https://ror.org/021018s57

  2. 2 ANSTO Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW 2232, Australia.
  3. 3 Universidad de Jaén
    info

    Universidad de Jaén

    Jaén, España

    ROR https://ror.org/0122p5f64

  4. 4 Instituto Andaluz de Ciencias de la Tierra
    info

    Instituto Andaluz de Ciencias de la Tierra

    Granada, España

    ROR https://ror.org/00v0g9w49

  5. 5 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

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Journal:
Revista de la Sociedad Geológica de España

ISSN: 0214-2708

Year of publication: 2014

Volume: 27

Issue: 1

Pages: 79-90

Type: Article

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Abstract

Sulfate isotope compositions (δ34S and δ18O) and strontium isotope ratios (87Sr/ 86Sr) of Triassic evaporites in the Betic Cordillera are addressed for the first time in the present work. Isotope values have been determined in gypsum and anhydrite samples of the Germanic-type facies (Buntsandstein, Muschelkalk and Keuper) coming from different outcrops spanning the complete Triassic Period and corresponding to both the Internal Zones and the External (Prebetic, Subbetic) Zones of this chain. More precise age assignments and stratigraphic controls are often obscured because of the intense halokinetic and tectonic deformation occurred during the Alpine Orogeny in the Betic Cordillera. Isotope values of Triassic sulfates obtained in the present study range between 12.5 and 16.6 ‰ for δ34S, between 8.9 and 16.9 ‰ for δ18O, and between 0.707615 and 0.708114 for 87Sr/ 86Sr. These values, as a whole, are in agreement with those of worldwide Triassic marine evaporites.

Data source: Dialnet