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UNIVERSITY OF COLORADO STUDIES 



place mature valleys with gentle slopes to represent the stream^ystem of 

 that time. 



Geology 

 In nearly all the accounts of this region and the associated areas of the 

 front range, especially those written some years ago, the rocks have been 



Fig. 3. — Portion of the Evergreen Quadrangle. 



assumed to be of sedimentary origin, and so described. The banding has 

 nearly always been regarded as the stratification, and thought to represent 

 the dip of the original sedimentary rocks, from which the present complex 

 was derived. 



The geology of the lower Clear Creek area is a complex of presumably 

 metamorphosed igneous rocks, usually designated as pre- Cambrian, but 



