Red Biver and Clinton Ilonoclines. — JVewsom- Branner 
Wolf bayou are sharply folded at some places, and there are 
unmistakable evidences of faulting, but on account of the 
similarity of the different beds through the locality it is im- 
possible to tell the extent of the slip. 
About 250 yards south of the south half-mile corner of sec- 
tion 33, 13 N., 8 W., in the hillside east of the small creek is 
the hanging wall of a fault at the north side of the slip. The 
slip is probably not very extensive. The down-throw is on 
the north side. North of the fault the sandstones have a 
north dip of 25'^: south of it the strata are nearer horizontal. 
In 12 N., 10 W., section 33, the south half, two and one- 
half miles above Wilson's ford, in the valley of Devil's Fork 
of Little Red river, the sandstones have a dip of 15''-20'^ 
■southward and are slightly faulted. The down-throw is on 
the south side. The displacement is probably not more than 
40 or 50 feet. Although the connection between the fault at 
this place and that observed on Wolf bayou, to the northeast, 
has not been traced out, there is but little doubt that the two 
are the result of the same forces. 
From section 33 to the southwest the rock beds are folded 
in the axis of the monocline which extends parallel with Dev- 
il's Fork, and is Just north of it; the strata dip sharpl}' to 
the south from the high plateau of the Boston mountains. 
Along Devil's Fork the strata are sometimes slightly faulted 
near the axis of the fold. 
lull N., 11 W., section 10. the northwest quarter, the axis 
of the monocline crosses Hell creek one- fourth of a mile above 
its mouth. The strata are faulted at this place; immediately 
south of the fracture they have a dip of 8*^ south, 25^' east, 
while a short distance to the north the dip becomes gentler. 
(Fig 1.) 1'he hanging wall of the fault is on the south side 
of the slip and has a dip of 55", south 10*^ west. The amount 
FUiUUE 1. 
