Please note that the schools of literary criticism and their explanations included here are by no means the only ways of distinguishing these separate areas of theory. Indeed, many critics use tools from two or more schools in their work.
Conglomerate is a clastic sedimentary rock that contains large (greater than two millimeters in diameter) rounded clasts.
A sedimentary rock that forms when rock fragments are squeezed together Sizes of Rock Fragments: Range from clay particles that are too small to be seen w/o a microscope to large boulders that are too heavy to lift