Archean metavolcanics from the Rouyn - Noranda district, Abitibi greenstone belt, Quebec. 2. Mobility of trace elements and petrogenetic constraints.

John Ludden, Leopold Gelinas, Pierre Trudel

Research output: Contribution to journalArticle

Abstract

Qualitative evaluation of altered mafic pillows from this district shows that for low-grade metamorphism the high field strength elements (HFS) Zr, Y, Ti and REE are immobile. Where alteration is extreme, REE are leached and redeposited by carbonate-rich and K-rich metasomatic fluids whilst Zr/Y and Zr/Ti remain unchanged. Rb, Ba, and, to a lesser extent, Sr are mobile at all levels of alteration, but provided certain filters are applied, the original geochemical values of the lavas for the alkaline elements, HFS and REE can be defined. The geochemical variations thus identified for the volcanic series of Rouyn-Noranda district are ascribed to the combination of contamination and fractional crystallization of a primitive tholeiitic magma.

Original languageEnglish
Pages (from-to)2276-2287
Number of pages12
JournalCanadian Journal of Earth Sciences
Volume19
Issue number12
DOIs
Publication statusPublished - 1982

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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