Weno and Pawpaw Formations 



15 



and is increasing southeastward at the rate of about 8 feet per mile. (Hill). 

 Likewise the Paluxy entirely disappears to the south. There are in addition 

 two complicating circumstances, which affect the thickness and lithology, 

 general regional thickening and depositional facies. The Fredericksburg 

 division increases steadily in thickness from the Red River to beyond the 

 Rio Grande. Its marl and marly limestone facies persist at most levels to 



APPROXIMATE THICKNESS OF THE COMANCHEAN FORMATIONS OF 



NORTH TEXAS, IN FEET 



^Approximate thickness. 



