GEOLOGICAL SETTING OF NEW MEXICO 



245 



with the Oklahoman series of the eastern field, but which some 

 Kansas workers are prone to correlate with the far-off Permian 

 rocks of the Russian Urals (Fig. 5). 



I"" 



NEW MEXICO 



Fig. 5. — Areal range of periodic formations 



As Pennsylvanian time was ushered in with the deposition of 

 sands and clays, so also did it close. Succeeding the huge Hme- 

 stone plate is the Bernalillan series of "Red Beds." As first pointed 

 out in 1904' the "Red Beds" problem which so long had baffled 



I Report of the Governor of New Mexico to the Secretary of the Interior for igoj, 

 P- 339 (Washington, 1904). 



