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Structural Relations of the Granites and the Associated Rocks of South Fulton County, Georgia
註釋The Geologic Map of Georgia (1939) indicates that a small body of granite with a northerly elongation exists in the area. Preliminary investigations indicated that the body was composed of small granite pods oriented approximately perpendicular to the northeasterly regional structural trend. Field reconnaissance revealed the granite bodies to be inhomogeneous and to possess both gradational and apparent cross-cutting contacts with the surrounding rocks. The present investigation was undertaken with the hope of revealing the complex structural relations between the several types of granite and between the granite bodies and the country rock ... The geologic map was prepared with the major emphsis placed on the structural features and mineralogical differences between the rocks. Petrographic studies of the rocks included the examination of 237 thin sections and numerous polished sections.