Answer: Sill
Explanation: Tabular igneous pluton occurring in an orientation consistent with the surfaces of the plinth of adjacent sedimentary rocks is sill. Sill is a tabular layer of plates that is inserted into older layers of sedimentary rocks, but also can be inserted in some other types of rocks. Given that the sill is oriented with the existing older rock layer, this means that the sill does not cut the preexisting rocks.
