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It is formed when a stream with a course originally established on a cover of rock now removed by erosion, so that the stream or drainage system is independent of the newly exposed rocks and structures. In other words, it is a drainage pattern which exhibits discordance with the underlying
rock structure because it originally developed on a cover of rocks that has now disappeared due to denudation. Consequently, river directions relate to the former cover rocks and, as the latter were being eroded, the rivers have been able to retain their courses unaffected by the newly exposed structures. The stream pattern is thus superposed on, or placed on, ridges or structural features that were previously buried. The Damodar, the Subamarekha, the Chambal, the Banas and the rivers flowing at the Rewa Plateau present some good examples of superimposed drainage.