194 G. I. ADAMS — RED BEDS OF XORTHEKX TEXAS 



report of the Texas survey. Accordingly a reconnaissance was made 

 from Henrietta eastward to the border of the Cretaceous and southward 

 to Bowie, at which place the coal of the Cisco division outcrops. In 

 drivinoj overland it was found that the red color which is predominant 

 around Henrietta extends to the Cretaceous border, although showing 

 somewhat less conspicuously in the more easterly outcrops. The beds, 

 which are sandstones and shales, w^ere seen to have low dips to the 

 northwest. In this part of the field the red color accordingly extends 

 downward in the section nearl}^ to the coal at Bowie, as shown on the 

 accompanying map. No stratigraphic break or division line was ob- 

 served. 



The next point examined was the relation of the Clearfork to the 

 Wichita division. By driving from Bowie to Henrietta and Wichita 

 falls, and thence westward along the Wichita river to Baylor count}^ 

 and southward to the Salt fork of the Brazos, and eastward to Graham, 

 opportunity was afforded for seeing the formations both along the strike 

 and dip. In Clay, Wichita, and Archer counties the rocks are clays, 

 sandstones, and conglomerates, with occasional calcareous beds, which 

 do not form strata or lenses of limestone, but rather impure, nodular 

 layers. In the northeastern part of Baylor count}" a thin stratum of 

 limestone was found, which has been described by previous writers as 

 occurring at the old military crossing of the Wichita river and affording 

 invertebrate fossils. The line of outcrop of this bed was followed south - 

 w^ard to the Salt fork of the Brazos. From this point the journey to 

 Graham was across the outcrop of the lower beds, and the section re- 

 vealed considerable change in lithology from what was seen farther 

 north, thin limestones occurring at several horizons. 



To the east of Seymour, and higher in the section than the limestone 

 whose outcrop was traversed, there are a number of limestone beds which 

 outcrop conspicuousl}" on the Salt fork of the Brazos. A trip was made 

 from Seymour along the breaks south of the Salt fork into Throckmorton 

 county, thence westw^ard through Throckmorton to the western border 

 of the limestones, and northeastward, returning to Seymour. Within 

 this area the section contains a larger number of limestones than to the 

 northward, and individual beds are heavier and more conspicuous. The 

 writer is convinced that they are equivalent to the limestones of the 

 Albany division to the southward, since they are in strike with the 

 Albany and lithologically similar. This is a verification of the later 

 conclusions of Mr Cummins. 



With this point established, it appears that what have been called the 

 Clearfork and Wichita divisions by Mr Cummins are the equivalents, in 

 part at least, of the Albany. To return now to the consideration of the 



