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HUNTINGTON AND GOLDTHWAIT: THE HURRICANE FAULT. 251 
very nearly in line with the point of minimum throw of the Hurricane 
fault. It may be a purely accidental coincidence, but as the main fault 
increases both north and south of this point to its normal throw the 
smaller sub-parallel fault decreases. 
The second of the two minor faults lies in the Colob plateau, one of 
the loftiest portions of the upheaved eastern block. It trends a little 
more to the east than does the main fault, which here trends north- 
northeast. Toward the south it swings around still more to the west 
and dies out. In the escarpment of the Hurricane fault just north of 
Dry canyon a mild syncline appears, which seems to be the last rem- 
nant of the Colob fault. Along the line of maximum displacement, 
which amounts to seven or eight hundred feet, runs the upper part of 
LeVerkin creek for a distance of two or three miles. On the west of 
the stream the downthrown block, which might much better be called 
the less uplifted block, rises three hundred feet or more in steep but 
graded slopes covered with vegetation. On the east its edge presents 
a precipitous cliff of naked red sandstone which rises a thousand feet 
and is capped by a band of white, the Colob sandstone, and a band of 
green, the luxuriant vegetation that flourishes on the top of the well- 
watered plateau. A few miles from its source, LeVerkin creek leaves 
the line of the fault and plunges through the uplifted block in a chasm 
of profound depth and exceeding narrowness. The brevity of our visit 
to this region gave an opportunity for nothing but a hasty reconnais- 
sance. It sufficed, however, to show that the tilted block between the 
Colob fault and the main Hurricane presents a type of topography dif- 
ferent from any that we have elsewhere encountered. Here alone we 
find ponds, small sheets of water which during the rainless summer have 
no visible outlet. They lie in longitudinal valleys which seem to be of 
subsequent origin, as they run north and south parallel to the prevailing 
strike of the whole region whose strata here dip to the east. The pres- 
ent drainage, however, is largely consequent on the recent faulting, and 
seems to have no relation to the little basins that lie athwart it. In our 
brief traverse of the region we got the impression that at the time of the 
Colob faulting this block was tilted in such a way that an old subse- 
quent drainage was entirely destroyed and a new consequent system 
inaugurated. Here and there, however, the old valleys were warped or 
dammed in such a way that they formed little basins between the head- 
waters of the younger streams. This region, together with the adjacent 
portion of the Hurricane fault north and south of Kanarra, and the 
neighboring Cretaceous with its abundant coal and fossils, affords a fine 
