PALEOZOIC STRATIGRAPHY OF ROCKY MOUNTAINS 377 



apparent conformity wherever both are present, was the earliest 

 development of the most characteristic Jefferson type of dolomite 

 — dark-brown in color, saccharoidal, and giving forth a strong 



m 



— .— _c 



-— ^* to 



.s a 



i ° 



O O 



en ^3 



C 



a "* 



P > 



O 



M CD 



bituminous odor when freshly broken. The data suggesting dis- 

 conformity at the top of Member 3 are summarized in the dis- 

 cussion of disconformities (pp. 131-34). 



