A '''dike''' is a sheet-shaped [[igneous rock|igneous]] [[intrusion]]. Cuts across existing [[rock]] structures.<ref>Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995). 250.</ref> | A '''dike''' is a sheet-shaped [[igneous rock|igneous]] [[intrusion]]. Cuts across existing [[rock]] structures.<ref>Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995). 250.</ref> |