LENADO SPECIAL MAP. 117 
South of the Castle Creek fault the section does not encounter any 
disturbance, but cuts the steeply dipping sandstones and shales in a nearly 
horizontal zone. 
RESUME OF FAULTING. 
In the six east-west sections which have been described the north- 
south faults have a general downthrust to the east. This is comparatively 
uniform, The throw of the east-west faults, however, as seen in the three 
longitudinal sections, G, H, and I (Atlas Sheet XV), is not nearly so uni- 
form. In Section G the east-west faults to the north of the Butte fault have 
a general downthrust to the south, while in the same section the common 
throw of the same system of faults to the south of the Butte fault has been 
up tothe south. In the northern part of Section H there is a general down- 
throw to the south; in the central part there is no uniform direction of throw, 
the blocks having moved up and down indiscriminately; in the southern part 
there is a tendency toward a downthrust to the south. In Section I the © 
common throw of the faults in the northern part of the section seems to be 
down to the north. So the total effect of all the faulting in the ourtelotte 
Park area may be summarized as a general downthrow to the south and 
east, the downthrow to the east being strongly marked, while that to the 
south is not so uniform. 
LENADO SPECIAL MAP. 
FOLDING. 
The only noteworthy feature in the flexure in the beds at Lenado is a 
slight anticlmal dome on the extreme eastern edge of the area of the 
special map, where the lowest beds of the sedimentary series abut against 
the granite. The fold is best seen in the bed of Woody Creek, about three- 
quarters of a mile above the little camp of Lenado. At this point the 
stream emerges from its granite bed and crosses over the uptumed edges 
of the overlying sedimentary formations. This change from the Archean 
to the overlying rocks is marked by a very striking gap, which is shown in 
Pl. XI. This view looks east up the valley of Woody Creek from Lenado. 
The distance between the houses in the foreground and the cliffs which 
rise above the canyon on both sides is about half a mile. The top of the 
steep cliff at the right is of Cambrian quartzite, and the quartzite also 
