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It has been possible with the aid of whole rock geochemistry to make a start at understanding the Caledonian volcanic belts in Norway, so that we can now progress beyond the stage of considering them under all-inclusive terms such as "greenstone", "basic volcanics" and other generalizations and begin to think in terms of specific magmatic types, e.g. island arc tholeiites, island arc calc-alkaline suites, ocean floor type lavas, etc..
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