576 P. E. RAYMOND TRENTON OF TENNESSEE AND KENTUCKY 



1. Thinly bedded limestone, full of Dalmanella, with partings of unfossil- 



iferous shale — 20 feet. 



2. A layer of much contorted limestone and shale. The original mass seems 



to have been well stratified, the limestone in beds 2 to 6 inches thick. 

 As a result of pressure, the layers have been disrupted, folded, tilted, 

 and even rolled over, forming boulder or pillow-shaped masses. The 

 appearance is that of a deposit which has slid while still relatively soft, 

 rather than that of a series which has been folded after consolidation — 

 3 feet. 



3. Limestone in thick layers, almost entirely made up of shells — 8 feet. 



By continuing to a cutting on the next railroad west of this, and thence 

 to Fort Negley, it is possible to get a fair idea of the succession to the top 

 of the Catheys, but the section is exposed in greater detail along the 

 Tennessee Central Railroad between the City Hospital and the Cumber- 

 land Eiver. It was not possible to connect the section above definitely 

 with what follows, but it is probably all below number -A. 



4. Impure limestone, some layers made up chiefly of Dalmanella ; 18 inches 



of shaly limestone at top — 7 feet 6 inches. 



5. Irregularly bedded light gray limestone with thin partings of shale. Dal- 



manella common, some bryozoa present — IT feet. 

 Top of the Hermitage. 



6. Light gray, coarsely granular, cross-bedded limestone, in layers 1 to 6 feet 



in thickness. The cross-bedding is well brought out on the surfaces and 

 edges of the layers by the large amount of phosphate present. Few 

 complete, but many fragmentary fossils are to be found. The highest 

 layer contains fiat pebbles of limestone, usually about half inch in 

 thickness and from 2 to 6 inches in greatest diameter. There are also 

 larger fragments of stratified limestone up to 8 inches in thickness and 

 16 inches in length. Scattered about among the pebbles are mutilated 

 shells of pelecypods and cephalopods. This is the Capitol limestone of 

 Safford and it is evidently, as he stated, a deposit of calcareous sand. 

 Its bedding indicates wave action, and very shallow water, if not actual 

 emergent conditions — 28 feet. 



7. Pure, buff limestone full of small calcite-filled "tubes.*' The "birdseye"- 



like layers are interbedded with less pure limestone. The upper foot 

 is somewhat shaly and contains a great abundance of ostracods — 7 1 - 

 feet. 



8. Dark gray, impure limestone with a layer almost entirely made up of a 



large massive Tetradium at the top — 4 feet. 



9. One layer of tbe pure buff limestone filled with Tetradium racemosum — 



1 foot. 



Zones 7 to 9 make up the so-called f; Bigby Dove/' which lias already 

 been commented upon. Aside from ostracods and Tetradium, it contains 

 few fossils, those seen being gastropods. In former times this fine- 

 grained pure limestone would have been considered indicative of deep-sea 



