194 Berger — Hogshooter Gas Sand. 



along this belt, iri comparison with the thicknesses to the 

 east and west. A stream coming from the region to the 

 east of the granite hills of Kansas, which were under- 

 going erosion at this time, would come through this 

 depression on its way to the pre-Cherokee basin, which 

 lay to the south and east of the area under consideration. 



The main body of the Hogshooter gas sand is inter- 

 preted as having been deposited in the channel of the 

 principal stream flowing southward through the pre- 

 Cherokee , valley. The narrow and comparatively thin 

 eastward and westward extensions of the Hogshooter 

 sand are believed to be deposits made by tributary 

 streams, in the lower part of their courses. 



Similar deposits are known at the surface in central 

 and northern Missouri, where two main channels have 

 been mapped 3 as the Warrensburg and Moberly Chan- 

 nels. These channels and their tributaries were made by 

 streams flowing to the north and west from the old land 

 mass in southeast and central Missouri. These channels 

 were formed considerably later in Pennsylvanian time 

 than the deposit just described, and at the time of their 

 formation, the depositional basin had expanded far to the 

 northward and westward. 



The writer is indebted to Mr. A. W. McCoy, under 

 whose direction the work has been carried on, and also to 

 Dr. L. C. Snider, for valuable suggestions. 



8 Missouri Bureau of Geology and Mines, 2d Series, vol. 12, pp. 91-106. 





