454 E. B. ]3KANS()N A MISSI^SITJM AN DELTA 



the southern area^ but bears some coal. The change from the Pulaski to 

 the Greenbrier is abrupt. 



Feet In. 



9. Light gray to blue gray, tbin to tbick bedded, calcareous sbale. ... 11 . . 



8. Greenish gray shale 4 



7. Compact, red shale 3 4 



6. Greenish gray shale, slightly micaceous, streaked with carbonaceous 



material and limonite. A few inches to 1 



5. Like 7 2 . . 



4. Like 6 1 G 



3. Like 7 2 . . 



2. Like 6 1 5 



1. Carbonaceous shale to coal 4 



Contact with the Price sandstone. 22 



PRICE SANDSTONE (POGONO) 



In the Narrows section the Kimberling shale is faulted up against the 

 Greenbrier limestone and no Price outcrops. Three miles to the west 

 along the l^orfolk and Western Eailway an outcrop occurs, but part of 

 the formation is faulted out. The thickness is estimated at 200 to 300 

 feet, but the estimate is not based on sufficient data. Well data to the 

 north give no aid, as it is impossible to determine the bottom of the 

 formation from such data. 



The thinning of the Mississippian away from the Cloyds 



Mountain Akea 



The Pulaski thins to the northeast, north, northwest, and southwest 

 from the Cloyds Mountain region and is absent east and southeast. In 

 the Max Meadows region, 30 miles southwest, the Greenbrier rests on 

 the Price and the Pulaski is absent. In the area described in the Poco- 

 hontas folio, which begins about 15 miles west of the Cloyds Mountain 

 section, the Pulaski is 30 to 300 feet thick, apparently being thickest 

 nearest the Cloyds Mountain area and thinning away from it. Fifty 

 miles northeast it is 200 to 300 feet thick, but the top may be absent. 

 The Price sandstone thins in the same directions as the Pulaski, gener- 

 ally falling from 757 feet to 200 or 300 feet within a few miles. 



Interpretation of the Conditions 



The following is presented as an interpretation of the history of these 

 regions in Mississippian time. With the close of the Devonian or early 

 in the Mississippian the sea basin from north of Narrows to south of 

 Cloyds Mountain was filled above sealevel and coastal swamps in which 



