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| Description: Plate Tectonics and Igneous Activity Plate motions provide the mechanism by which mantle rocks melt to form magma Intraplate igneous activity Activity within a rigid plate Plumes of hot mantle material rise Form localized volcanic regions called hot spots Examples include the Hawaiian Islands and the Columbia River Plateau in the northwestern United States Picture Stats: Views: 201 Filesize: 1.45MB Height: 921 Width: 912 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39626 |