PALEOCENE MAMMALS OF CENTRAL UTAH — GAZIN 7 



masses to the east and west. The principal fault along the east 

 side of the zone has had displacement exceeding 2,000 feet in places, 

 as indicated by the extent to which the Flagstaff limestone has been 

 depressed. To the west across Dragon Canyon this displacement has 

 been taken up along three principal surfaces of faulting, but with minor 

 fractures along which displacement has been in an opposite direction. 



Throughout most of the region the rocks are nearly level lying, 

 but within the depressed zone the sediments are noticeably dis- 

 turbed, particularly adjacent to the faults, where strong drag folding 

 was observed. Certain of the slices, particularly the most easterly 

 block, are depressed nortliAvard, and this together with the effect of 

 drac: alonjr the bounding faults has in these cases resulted in an 

 average northeasterly dip to the various deposits. The slice on which 

 localities 2 and 3 are shown has been raised relative to both blocks 

 immediately adjacent; hence the sediments are more nearly level, but 

 with a noticeable downward drag adjacent to the westerly fault in 

 the vicinity of locality 3. On the other hand, a very strong upward 

 drag is apparent along the westerly margin of the two westerly slices, 

 near locality 4. 



Fossil localities. — Four localities have been indicated on the map. 

 These show the general location of the principal occurrences of fossil 

 vertebrates with the exception of a locality for Paleocene mammals 

 on Wagon Road Ridge some distance to the north of the area shown 

 on the map. and of several sites around North Horn IMountain, which 

 cannot be shown on the map, from which dinosaur remains have been 

 recovered. 



Those that have been indicated are as follows: (1) A locality in 

 Cretaceous rock on North Horn Mountain where the greater part 

 of a sauropod dinosaur was discovered in 1937, near the line between 

 sections 3 and 4, T. 19 S., R. 6 E. (2) The original Paleocene 

 locality in Dragon Canyon from which most of the Dragon collection 

 was obtained; NW14 sec. 8, T. 19 S., R. 6 E. (3) A Cretaceous 

 locality in the lower part of Dragon Canyon, which produced the 

 unique fossil lizard collection; S^/^ sec. 17, T. 19 S., R. 6 E. (4) 

 The new Paleocene locality where mammalian fossils were discovered 

 at two distinct levels; W1/2 sec. 7, T. 19 S., R. G E. 



