The rocks formed higher in the wedge tend to be greenschist facies rocks; those formed lower down tend to be blueschist. Because of the scraping and churning within the accretionary mass, these rocks ...
The Precambrian granulite facies rocks from the Western coast of Norway, Bergen Arcs, are partialy hydrated in amphibolite and eclogite facies rocks. All these rocks have the same composition for the ...