sedimentary dike

sedimentary dike

[¦sed·ə¦men·trē ′dīk] (geology) A tabular mass of sedimentary material that cuts across the structure or bedding of preexisting rock in the manner of an igneous dike and that is formed by the filling of a crack or fissure by forcible injection or intrusion of sediments under abnormal pressure, or by simple infilling of sediments.