GEOLOGY 141 



ward Carbonaceous shales outcrop., interst ratified with other 

 Sedimentaries and grade into fairly good coal seams. These 

 shales and coal seams are quite constant phenomena along the 

 western slope. They are in about the same latitude as the 

 Cerrillos fields northeast of Albuquerque and have a genetic 

 relation to them which will be spoken of later. The fact that 

 there is a lack of any noticeable amount of faulting on the 

 western side as compared with the frequency of faulting on 

 the eastern slope should be noted here, as it has a very 

 important bearing upon the resources of the two regions. 





"An Erosion Remont on a wind west portion of the Continental Divide." 



That there is a probable connection between Carbonaceous 

 deposits such as coal beds and oil fields is a generally accepted 

 fact among Geologists. Just what the chemistry is of the 

 formation of crude oils, and just how they are formed it as 

 yet not fully understood. It is enough however to state that 

 oils are derived from some organic origin either plant or 

 animal, as for instance, fossils occuring with coal deposits 

 function as explanation enough for the present. 



SEVEN LAKES OIL REGION 



This region is thirty three miles northeast of Chaves and 

 about twenty west of the Continetal Divide. The area about 

 Seven Lakes is one of low relief in Cretaceous strata. Low 7 

 broad folds characterize the region and are a noticeable fea- 



