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CANADIAN BREAKS. The Canadian Breaks is unique valley in Oldham County that dramatically interrupts the Pliocene surface of the High Plains. The breaks were formed where the Canadian River cut through the Caprock and Triassic sandstone beneath into Permian sandy clay and andydrite.

Robert A. Sheldon, Roadside Geology of Texas (Missoula, Montana: Mountain Press, 1979).

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Handbook of Texas Online, "Canadian Breaks," accessed November 23, 2017,

Uploaded on June 12, 2010. Published by the Texas State Historical Association.