72 
KEITH. 
Page. 
( b ) Hypothesis of Faulting. 83 
(1) Deformation of Plane. 83 
(2) Inclusion of Fragments. 84 
(3) Summary. 84 
(c) Unconformable Deposition. 84 
VII. Features of the Erosion Interval. 85 
(a) Depth. 85 
( b) Geographic Extent. 85 
(1) Millers Cove. 85 
(2) Dennys Mountain. 86 
(3) Iron and IPolston Mountains. 86 
(4) Nolichucky River. 86 
(5) Hampton Valley. 86 
(6) Limestone Cove. 86 
(7) Blue Ridge of Virginia. 87 
(c) Extent of Deformation. 87 
VIII. Summary. 88 
The subject of the following paper is an episode in Appa¬ 
lachian history, the facts of which are recorded in Chilhowee 
mountain, in Tennessee. 
The rocks of Chilhowee mountain are the oldest sediments 
in the Appalachians and on that account have particular 
interest. 
The same formation occurs at intervals from Alabama to 
Newfoundland ; hence the conditions that controlled its his¬ 
tory have affected the entire Appalachian area. 
I. Chilhowee mountain lies on the eastern edge of the 
great valley of Tennessee, about midway between Georgia 
and Virginia. Its wall-like front rises boldly from the 
smooth rolling valley and forms the western outlier of the 
Great Smoky mountains. Eastward between it and the 
Smokies lies a region of irregular peaks and ridges, relieved 
here and there by an open limestone valley or “ cove.” 
(a) Chilhowee mountain is a straight ridge, with a sharp, 
narrow crest formed by hard layers of sandstone. It is quite 
even in profile, ranging from 2,000 to 3,000 feet in altitude ; 
about midway is the Little Liver gap, the only one of note. 
Beside the main crest there are usually subordinate lines of 
