North of the Grand Cafion of the Colorado. 461 
is seen on the eastern side of Long Valley, named Long Valley 
Cliffs. Another fault is seen at the cafion of the Kanab. It 
has been traced about thirty miles ; the drop is from 100 to 200 
feet, and still on the west, but being inconsiderable, no well 
. line of cliffs has been formed; this we call Karab 
ault. 
great plateau ; this displacement, either as a fault or monoclinal 
uplift, has been traced to the northern sources of the Dirty 
group of volcanic tables and cones, and it is conjectured that 
the eruptive matter issued from the fissures of this fault and 
its branches ; to this we have given the name Eastern Kaibab 
Fault ; and like the Western, it has been traced far to the north. 
and it is believed to extend to Price River Valley ; but here 
the drop changes and is found on the eastern side of the line. 
Still other folds and faults have been found to the east, but 
none of them have been traced, having been seen only at points. 
rae! their lines, and hence no farther mention of them will 
ere ; 
From time to time the drop had been measured, and a great 
variety of accompanying phenomena observ Some of these 
facts are of much interest. In many places the faults are seen 
to branch ; in others they suddenly or gradually change into 
monoclinal uplifts ; in still others the drop marks but a part of 
the displacement; the edge of the fallen rock having caught 
on the wall remaining zn situ, is turned up, so that below it 
appears as a fold, and above as a fault. In other places the 
‘ties of the fallen rock is bent down, and in still other places | 
ae rocks are not separated by well defined fissures, nor are 
t : i 
cafions through the cliffs, so that it is possible to ascend these 
great steps by passing up a cafion way, rather than by climbing 
escarpments. W hasevee a fault crosses one of these lines, the 
