Concordant, lenticular pluton, which is circular or elliptical in plan. The floor essentially is flat, but the roof is distinctly domed. Comparelopolith.
Geography
An intrusion of igneous rock which spreads along bedding planes, forcing the overlying strata into a dome. Rocchi et al. (2002) Geology 30, 11 delineate the two-stage growth of laccoliths at Elba Island, Italy.