down into a smooth slide,.white and gray with portions of 
greenish and reddish lines. The hard sand and chert beds 
make occasional shelves. The rise is some 300 feet. A 
short distance back from this is another rise of 100 feet. 
This is furmed of lower No. 1. A little farther up the Rio 
this shell comes forward and joins the lower bluff, making 
one bluff some 400 feet high. These extend to the mouth of 
the Marcos 3 or 4 miles above. A trail runs tu the Eastward 
from the ford across these bluffs and strikes the Mancos 
some 5 miles above its mouth. The strata dip sxigxxtiy to the 
East No. 1 is exposed in the deeper gulches for only about a 
mile. The shales of No. 2 and 3 f^rm a number of irregular 
buttes that range along about 1 mile from the Rio, and rise 
200 or 300 feet above the general level. On one of these 
Chittenden made a station and from it I got a sketch of l^he 
Sierra Carriso. On it most of the geology is marked. 
The lower 3 miles of Maneos are in No. 1. From that to the 
Canon we pass Sxowly up through the shales at top of No. 
1, 3 to 4 feet thick. At the mouth of the canon I estimate that 
800 feet of shael lie between the surface and No. 1. 400 feet 
more take us up to the begining of the lower escarpment of the 
Mesa Verde, 100 to 500 feet above this are of what I have called 
the transition beds - beginning below with shale and grading 
up to solid sandstone. Of this 1200 feet of shale mentioned 
‘t h 
