Lead isotopic systematics of Urals massive sulphide deposits

Jean Jacques Orgeval, Catherine Guerrot, Svetlana G. Tessalina, Bernard Bourdon, Victor Zaykov, Claudia Buley, Berndt Bushmann, Richard Herrington, Rex N. Taylor

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

Abstract

The isotopic composition of lead from a total of 53 samples of galena from 18 VHMS deposits shows a range between 17.437 and 18.111 for Pb-206/Pb-204; 15.484 and 15.630 for Pb-207/Pb-204 and 37.201 - 38.027 for Pb-208/204. The results show a systematic trend with the leads of the Sibay, Barsuchiy Log and Djusa deposits being most radiogenic by comparison with those of Bakr-Tau and Oktiabrskoe which are the least radiogenic deposits. The Bakr-Tau and Oktiabrskoe deposits occur within most primitive fore-arc rocks at the lower part of the Baymak-Buribay formation, which contain lavas of boninitic affinity. The Sibay, Barsuchiy Log and Djusa deposits are found in intra- and back-arc setting and are hosted by a sequence of bimodal tholeiites. The deposits in "arc" settings such as the Balta-Tau, Gai and Alexandrinka deposits occupy an intermediate position. This trend is explained in term of mixing between mantle wedge and continental blocks.

Original languageEnglish
Title of host publicationMineral Deposit Research: Meeting the Global Challenge
EditorsJ Mao, FP Bierlein
Place of PublicationBerlin; Heidelberg
PublisherSpringer, Springer Nature
Pages667-670
Number of pages4
ISBN (Electronic)9783540279464
ISBN (Print)9783540279457
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event8th Biennial SGA Meeting - Beijing, China
Duration: 18 Aug 200521 Aug 2005

Conference

Conference8th Biennial SGA Meeting
CountryChina
CityBeijing
Period18/08/0521/08/05

Keywords

  • lead isotopes
  • Urals
  • massive sulphide deposits
  • SOUTH URALS

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