1) Igneous rock 
A lopolith is a large igneous intrusion which is lenticular in shape with a depressed central region. Lopoliths are generally concordant with the intruded strata with dike or funnel-shaped feeder bodies below the body. The term was first defined and used by Frank Fitch Grout during the early 1900s in describing the Duluth gabbro complex in norther...
igneous intrusion associated with a structural basin, with contacts that are parallel to the bedding of the enclosing rocks. In an ideal example, ... [1 related articles]
A saucer-shaped intrusive body of igneous rock. Lopoliths are typically mafic in composition.
A large laccolith that is bowl-shaped and depressed in the center, possibly by subsidence of an empt
A large laccolith that is bowl-shaped and depressed in the center, possibly by subsidence of an emptied magma chamber beneath the intrusion.
a mass of igneous rock similar to a laccolith but concave downward rather than upward.