Sources of rhenium and osmium enrichment in fumaroles, sulphide sublimates and volcanic rocks from the Kudriavy volcano

Svetlana G. Tessalina*, Françoise Capmas, Jean-Louis Birck, Claude-Jean Allegre, Marina A. Yudovskaya, Vadirn V. Distler, Ilya V. Chaplygin

*Corresponding author for this work

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

Abstract

Rhenium loss through magma degassing could be partly balanced by rhenium enrichment in fumarolic magmatic gases and Re-bearing precipitates, as may be the case for the Kudriavy volcano associated with an active subduction zone. The relatively unradiogenic (187)Os/(188)Os isotope ratios (0.122 up to 0.152) and high Os contents (averaging 0.6 ppb) of fumarolic gas condensates imply that significant Re and Os are remobilised from depleted MORB mantle. Involvement of a Re-rich component is evident from high Re concentrations in high-temperature gas condensates, ranging from 7 to 200 ppb. Indeed, Re-rich Os-poor components such as organic-rich subducted sediments and volcanic rocks do not significantly shift the isotopic composition of fumarolic products. The relatively radiogenic composition of the dacite-andesite-basaltic arc volcanics ((187)Os/(188)Os ratio up to 0.58), however, could result from significant Os (and Re) input from subducted sediments.

Original languageEnglish
Title of host publicationMineral deposit research
Subtitle of host publicationmeeting the global challenge
EditorsJingwen Mao, Frank P. Bierlein
Place of PublicationBerlin; Heidelberg
PublisherSpringer, Springer Nature
Pages841-843
Number of pages3
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

  • Re-Os
  • subduction zone
  • rheniite
  • Kurile islands
  • Kudriavy
  • RE
  • SUBDUCTION
  • KUDRYAVY
  • ISLANDS
  • CRUST

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