J. J. Stevenson—Luaults of Southwest Virginia. 267 
The extent of the faults, both vertical and longitudinal, is 
as follows: 
Vertical. Longitudinal in Virginia. 
oor Viallley:<20 Geese 2,400’ to 0’ 40 miles. 
Wallen’s Ridge ------- 2,809’ to 0! May) ol 
AtLOUSs Milles = selemene 500! to 0’ PAD ales 
Clinch Group— 
a. Elunter Valley 2===- 2- 8,500’ to 0’ 65+ * 
ONewsGardent ee 232552 A BOO4 UO, OF 102+ ‘ 
ca stony, Ridgene. 22) 72 /42'300)'to: 0; 50+ « 
day Abs: Vialleyo.t. 2 ses 1,700’ to. 0’ 404+ « 
Copper Creek, ete. - -- - 3,000’ to 0! redo Nee 
Sallitrvalllle ers seo cole 10,000’ to 500' 3 Obes 
Walker Mountain _--- 10,000’ to 1,000’ 1380+ “ 
Max Meadows .--.--- 9,800' 2 Onaveiss 
PUI Sy ats Bes eee Se a 9,600’ Siuivass 
Draper Mountain. - -- - 12,500’ to 0’ 2 Onan 
rice: Mountain, 22-22. 10,000’ 10+ « 
The conditions in the immediate vicinity of the apparent 
fault lines are not easily ascertained, for ordinarily the line of 
contact and the area to a considerable distance on each side are 
covered by rubbish. More than that: the thrust has been 
sufficient to shove the upthrown beds to a considerable distance 
over on the downthrown beds as is shown by the Hunter Val- 
ley fault on Big Stony Creek in Scott County, so that the 
place of the fault is necessarily somewhat obscure. That the 
faults are practically cracked anticlinals, however, is sufficiently 
evident from their origin and disappearance; but traces of the 
anticlinal structure are not wanting along the faulted lines. 
Thus the great Clinch or Hunter Valley fault shows, near the 
Tennessee line, Clinton and Knox in contact but each dipping 
from the fault. A similar structure was seen thirty miles 
farther eastward, where Lower Carboniferous and Devonian 
are upturned on the northerly side of the fracture; while still 
farther east the Lower Coal-measures (Quinnimont) are shown 
on the northerly side dipping away from the fault at sixty to 
seventy degrees, with the Knox beds on the other side also 
dipping away from the fault but at a less rate. But the condi- 
tions vary, and at several localities along this fault the dip on 
the downthrow side is toward the fault, the thrust evidently 
having been sufficient to carry the upthrown rocks over the 
line to a considerable distance. This is apparently the condi- 
tion along the Walker Mountain fault everywhere within the 
area examined; for the conformability is so close that the 
existence of a fault would not be suspected by one depending 
only on the local stratigraphy. 
Rocks in the immediate vicinity of the apparent fault line— 
