412 A. F. FOERSTE LIMESTONES OF TENNESSEE AND KENTUCKY 



Osgood limestone. About a quarter of a mile farther north, a short dis- 

 tance above the home of Carol Litton, it rests on the top of the Clinton. 

 It rests on the Clinton also a mile east of the mouth of the Oil well 

 branch, up Leipers creek. 



A mile above Fly's store, on Leipers creek, the Black shale rests on 

 Louisville limestone 14 feet thick. The age of the Louisville limestone 

 is shown by the presence of Waldron shale at one point near the top of 

 the bluff. About five-eighths of a mile straight southward, on the road 

 from Fly to Santa Fe, the Black shale rests on the lower half of the 

 Laurel limestone. Only the cherty beds forming the upper half of the 

 Clinton are well exposed. In this cherty part of the Clinton, especiall}'' 

 near the top of the section, Halysiies catenidatus is often ver}' common — 

 a iact characteristic of the Clinton in Maury count}^ and observed also 

 at Newsom and at the spring-house belonging to Belfield Robinson, south 

 of the Sam Walker farm (locality 10). 



East of the home of C. E. Harris (locality if) the Black shale rests on 

 Laurel limestone IS] feet thick. About a mile and a quarter directly 

 southward, northeast of the home of Mat Sowal (localit}^ S), a large part 

 of the section is not exposed. The base of the Clinton is, however, well 

 shown, and chert fragments with Clinton fossils occur up to a level of 

 33 feet above the base. Above this, for a distance of 25 feet, there are 

 no exposures ; then 21 feet of limestone are seen. From this it is prob- 

 able that the Black shale rests on Louisville limestone. 



Two miles directl}'^ north of C. E. Harris' house, on the road from 

 Snow creek to Bethel church, the Black shale rests on Clinton limestone 

 15 feet thick. A mile and a quarter northward, along the same road, 

 below the house of Peter Thompson, the Black shale rests on the Clin- 

 ton, apparently on the top of the full section. 



A mile and a half northeast of C. E. Harris' house, opposite the home 

 of J. W. Skelley, above the spring, the Black shale rests on 15 J feet of 

 Clinton limestone. About the same distance southeast of the C. E. Harris 

 localit3% on the road to Mowd, the Clinton beneath the Black shale has 

 a thickness of 131 feet. 



At Montgomerys mill (locality 27) the Black shale rests on Louisville 

 limestone 25 feet thick. On the road leading from Centerville station 

 into town it rests on Waldron clay shale 21 feet thick. Along the rail- 

 road southwest of town the Waldron beneath the Black shale measures 

 only 4 inches. Above the spring in the Tan Yard hollow (locality 22), 

 2'i miles southeast of Centerville, 15 feet of solid white cherty Clinton 

 are exposed. The total Clinton section is not seen. Above this ledge 

 is a space of about 10 feet in which very little rock is exposed. This is 

 probably occupied by the soft shaly Osgood layers. Overlying this space 



