EntityQ662806· pop 45· linked from 1,007 articlesdikeSign in to savesheet of rock formed in a fracture in a pre-existing rock bodyConnectionsmid-ocean ridgeEntitydivergent boundaryEntitylamprophyreEntitytectonicsEntitytextureEntityoverburden pressureEntityAlaskaEntityArizonaEntityNew MexicoEntitygeologyEntityInternational Standard Book NumberEntityNorthwest TerritoriesEntityclayEntityplate tectonicsEntitypressureEntitygraniteEntitydigital object identifierEntitymagmaEntityInternational Standard Serial NumberEntityigneous rockEntityCategoriesDikes (geology)Plutonic rocksSedimentary rocksSheet intrusionsSubvolcanic rocks