DOME

An uplifted area of sedimentary rocks with a downward dip in all directions; often caused by molten rock material pushing upward from below. The sediments have often eroded away, exposing the rocks that resulted when the molten material cooled.

A large hemispheroidal hollow in the roof of a cave,formed by the breakdown and/or salt weathering, generally in mechanically weak rocks, which prevents bedding and joints dominating the form.