Re-Os systematics in chromite deposits from the Bulgarian Rhodopes

preliminary results

José María González-Jiménez, William L. Griffin, Thomas Kerestedjian, Fernando Gervilla, Suzanne Y. O'Reilly, Joaquín A. Proenza, Norman J. Pearson

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Using laser-ablation MC-ICPMS we have measured Re-Os isotopes in platinum-group minerals from chromitites of the Dobromirtsi ultramatic massif, Central Rhodopes, Bulgaria. The results show large variations in Os-isotopes ratios reflecting both magmatic and post-magmatic processes. Primary Os-isotope signatures indicate a melt depletion event ca. 415 Ma ago which is consistent with the accepted age of the Hercynian orogeny in the area. These signatures were disturbed during metamorphism by incorporation of Os and Re, resulting in both future and older model ages.

Original languageEnglish
Title of host publicationLet's talk ore deposits
Subtitle of host publicationproceedings of the Eleventh Biennial SGA Meeting
EditorsFernando Barra, Martin Reich, Eduardo Campos, Fernando Tornos
Place of PublicationAntofagasta, Chile
PublisherEdiciones Universidad Católica del Norte
Pages601-603
Number of pages3
ISBN (Print)9789562873291
Publication statusPublished - 2011
Event11th SGA Biennial Meeting - Antofagasta, Chile
Duration: 26 Sep 201129 Sep 2011

Conference

Conference11th SGA Biennial Meeting
CountryChile
CityAntofagasta
Period26/09/1129/09/11

Keywords

  • Re-Os isotopes
  • chromite deposits
  • platinum-group minerals
  • Bulgarian Rhodopes
  • Dobromirtsi

Cite this

González-Jiménez, J. M., Griffin, W. L., Kerestedjian, T., Gervilla, F., O'Reilly, S. Y., Proenza, J. A., & Pearson, N. J. (2011). Re-Os systematics in chromite deposits from the Bulgarian Rhodopes: preliminary results. In F. Barra, M. Reich, E. Campos, & F. Tornos (Eds.), Let's talk ore deposits: proceedings of the Eleventh Biennial SGA Meeting (pp. 601-603). Antofagasta, Chile: Ediciones Universidad Católica del Norte.