572 GE DAKE 
more. No fossils were found in the Mancos, but it is so highly 
characteristic in color and texture as to afford little doubt of its 
proper identification. Still farther southwest the graben seems to 
be floored with McElmo beds, probably the Salt Wash member, 
Scale, $47.2 1m 
Fic. 3.—Map of portion of Valley City graben, Utah 
piot® & ve SS 
= a ee 
A B 
Fic. 4.—Section across V alley City graben, Utah 
consisting of coarse gray conglomeratic sandstone. While it is 
possible that these beds are Dakota conglomerate, from their 
general character it seems much more probable that they are Salt 
Wash. ‘They lie at the base of a well-pronounced fault-line scarp 
of La Plata sandstone several hundred feet high, along the base of 
which the Dolores is probably exposed. If so, this would involve 
about 2,000 feet of displacement. ; 
