"This report on the Lyon Inlet area describes the stratigraphy, metamorphism, and structure of early Proterozoic sediments and their Archean basement, and illustrates the complex structural interaction of basement and cover rocks during intense deformation and high grad metamorphism. It is the first of several publications which will describe this entire belt of rocks. By providing a comprehensive understanding of the geology of these metasediments the Geologycal Survey is able to aid in the discovery and estimation of the potential resources available to Canada from this area." --