Can the zircon origin be established from geochemical data alone? Insights from chlorite schists in the Ronda peridotites

  1. José Julián Esteban 1
  2. Julia Cuevas 1
  3. José María Tubía 1
  1. 1 Departamento de Geodinámica, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU)
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2020

Issue: 68

Pages: 23-26

Type: Article

More publications in: Geogaceta

Abstract

This study deals with the scarce chlorite schists scattered through the Ronda peridotites (Betic Cordilleras, Spain) related to the intru-sion of granite dykes. Chlorite schists field data and the petrography, geochemistry and geothermometry of the extracted zircon crystals, point to late magmatic melts for the zircon origin. Moreover, LA-ICP-MS analyses reveal that trace and rare earth elements alone could not be indicative for the magmatic or hydrothermal origin of zircon. Therefore, the combination of that information with zircon morpho-logy, melt inclusions, geothermometry, and structural data, when possible, is crucial in the correct zircon origin identification.