Sulfate isotope composition of Messinian evaporites in the Piedmont basin (Italy)

Authors

  • Javier García-Veigas CCiTUB, Scientific and Technological Centers, Universitat de Barcelona, Spain
  • Luis Gibert Departament de Mineralogia, Petrologia i Geologia Aplicada, Universitat de Barcelona, Spain
  • Dioni I. Cendón ANSTO, Australian Nuclear Science and Technology Organisation, Kirrawee DC, Australia
  • Francesco Dela Pierre Dipartimento di Scienze della Terra, Università di Torino, Italy
  • Marcello Natalicchio Dipartimento di Scienze della Terra, Università di Torino, Italy
  • David Artiaga CCiTUB, Scientific and Technological Centers, Universitat de Barcelona, Spain

DOI:

https://doi.org/10.55407/geogaceta102282

Keywords:

Messinian, gypsum, evaporites, sulphate isotopy

Abstract

The Piedmont basin (NW Italy) records a Messinian Salinity Crisis (MSC) succession including a selenite gypsum deposit assigned to the Primary Lower Gypsum (PLG, MSC stage 1). Strontium isotope ratios are in the range of the PLG deposits of the Mediterranean area. Sulfate isotope compositions of vertically oriented selenite gypsum beds, in the lower part of the succession, are similar to those reported in other PLG deposits. However, flattened branching selenite cones in the upper part show higher isotope compositions, mainly in δ34S values, suggesting intense BSR conditions, stronger than reported in other PLG deposits. We interpret this chemical shift during deposition of the upper part of the PLG as the result of increased marine restriction assisted by the marginal position of this basin in the Adriatic Gulf during the Apennine and Alpine uplifts.

References

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Laguna evaporítica de Pastos Grandes (Bolivia)

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Published

2021-12-13 — Updated on 2023-10-31

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How to Cite

García-Veigas, J., Gibert, L., Cendón, D. I. ., Dela Pierre, F., Natalicchio, M., & Artiaga, D. (2023). Sulfate isotope composition of Messinian evaporites in the Piedmont basin (Italy). GEOGACETA, 70, 19–22. https://doi.org/10.55407/geogaceta102282 (Original work published December 13, 2021)

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Vol. 70 (2021): Julio-Diciembre

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Artículos

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