Lithium and delta7 lithium behavior during metamorphic dehydration processes and crustal evolution

Abstract

In order to understand better Lithium (Li) behaviour during the processes of sub-greenschist to granulite facies metamorphism and partial melting, fluid transport in subduction zones, weathering of continental crust and the evolution of juvenile continental crust, a large variety of samples have been studied in this thesis. These samples include mudrocks from British Caledonides, schists from Otago, New Zealand, high-grade metapelites and metabasites from Ivrea-Verbano Zone, Italy, Archean shales from the Kaapvaal Craton, South Africa, and Archean granitoids from Scotland, South Africa and Canada.