GEOLOGY 



Bad-land topography. A type of topography developed in 

 early maturity in certain high regions where the rock is but slightly 

 though unequally, resistant, is termed bad-land topography. Some 



Fig. 99. Bad lands of South Dakota. Oligocene formation. (Williston.) 



idea of bad-land topography is gained from Figs. 99 and 100. 

 Bad-land topography is found in various localities in the West, 

 but especially in western Nebraska and Wyoming, and the western 





Fig. 100. Bad-land topography north of Scott's Bluff, Neb. ( Dai ton, I'. S. 



Geol. Surv.) 



