NO. 4 



PHYSIOGRAPHY OF ROCKY MOUNTAINS — LEE 



thickness of the formations. Similar formations have been observed 

 from place to place between Greenriver, Utah, and Grand Junction, 



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Colo., where they constitute the Gunnison formation. 1 The upper 

 part of the Gunnison consists of variegated beds similar to the Mor- 

 rison, and by means of dinosaurs found in these upper beds near 



»Lee, W. T., U. S. Geol. Survey Bull. 510, 1912. 



