CRETACEOUS FORMATION. 91 



have no accurate notes of the sections exposed in the 

 railroad cuts but the public road from Randolph to 

 Centerville has been ■ somewhat closely examined. 

 At Soap Hill there is a typical section as follows : 



Soap Hill, 7 miles East of Centerville. 



1. Purple and mottled clays at aummlt of hill ... 5 feet 



2. Clayey sands in several ledges 10 " 



3. Cross bedded yellowish and whitish sands, 



traversed at intervals by ledges of sandstone 

 formed by the Induration of the cross-bedded 

 sands 30 " 



4. Laminated gray clays with partings of sand . . 10 " 



5. Alternations of laminated gray clays with 



cross-bedded sands in beds of 12 to 18 inches 

 thickness 40 " 



6. Yellowish cross-bedded sands with clay part- 



ings 20 " 



7. Laminated gray sandy clays containing a few 



leaf impressions 10 " 



8. Grayish white sands 8 " 



On the same road in the eastern part of the town of 

 Centerville, on ithe School House Hill, there may be 

 seen some fifteen feet <thickness of purple and yellow 

 clays. 



The same beds show along the Selma road, south of 

 Centerville, at many points. Sections are given in 

 the Coastal Plain Report, pages 336 and 338. To the 

 southwest of Centerville also, in townships 21 and 22, 

 ranges 7 and 8, many of (the ridges are composed of 

 purple clays eight or ten feet in thickness, resting on 

 four to six feet of gray clays.* 



On the road to Tuscaloosa the clays show about half 

 way between Centerville and Scottsville. 



Along the line of the Alabama Great Southern Rail- 

 road in this county, there are many exposures of the 

 Tuscaloosa clays, e .g. at Bibbville, where they have 

 been utilized for many years in the manufacture of 

 semi-refractory fire bricks for grates, etc. A great 



♦Costal Plain Report, page 338. 



