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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>
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A '''dike''' is also an elongated raised earthen mound used as a flood defence or to protect reclaimed land (see [[Polder]]).
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A '''dike''' (also spelled '''dyke'''<ref>[http://www.thefreedictionary.com/dike The Free Dictionary - definition of '''dike''']</ref>) is also an elongated raised earthen mound used as a flood defence or to protect reclaimed land (see [[Polder]]).
    
==References==
 
==References==
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