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This report documents the distribution, origin, and tectonic development of the Precambrian rocks of the St. John's area, representing the first systematic, detailed regional mapping and division of the Harbour Main, Conception, St. John's and Signal Hill groups, since they were subdivided in the southern Avalon Peninsula by Williams and King (1979). The report also provides a brief review of published and unpublished reports on the Quaternary geology and groundwater potential, as well as qualitative data on the surficial geology of metropolitan St. John's and surrounding region.
Work done in cooperation with the Department of the Army, New England Division, Corps of Engineers. Description of the geology of a glaciated terrane of lower Paleozoic rocks in northern Maine with generalizations on exploration geochemistry and engineering materials.