402 DESCRIPTIVE GEOLOGY. 



of their beds. A short distance north of Ogden Canon, a Hne of faulting is 

 plainly visible, having a direction a little north of east, in which the north- 

 ern beds have been thrown back and upward a few hundred feet. The 

 effect of this fault can be distinctly traced through the lower quartzites and 

 limestones, but is lost in the main body of the Wahsatch limestone. About 

 four miles north of Ogden, the Cambrian outcrops extend down to the foot- 

 hills, and back of the little town of North Ogden, or Ogden's Hole, the 

 Ute limestone occupies the extreme front of the range, over which the 

 light band of Ogden Quartzite can be distinctly traced. The low gap in the 

 range at this point, called Eden Pass, marks another line of faulting. The 

 Ute limestone ends abruptly, and its continuation to the northward is 

 found several miles back near the summit of the pass, overlaid by the Ogden 

 Quartzite, which slopes back to the eastward so nearly at the same angle with 

 the hill-slopes themselves that no higher beds than this have been observed 

 on the east slopes of the ridge north of this pass.. 



Willard Peak is a prominent summit of the range of equal altitude with 

 Ogden Peak, and even more conspicuous, having abrupt escarpments toward 

 the west, and sloping off steeply eastward into the parallel valley of the north 

 fork of Ogden River. Its summit is formed of the beds of the Ute lime- 

 stone dipping gently eastward, and distinctly traceable by their dark outline 

 over the light quartzites of the Cambrian which underlie them. The western 

 slopes of the peak are mainly formed of another Archaean body, consisting 

 of the same pinkish hornblendic-gneisses and gray mica-gneisses which 

 occur at Ogden Cailon, dipping here still more steeply to the westward, and 

 striking about north 20° west. The jagged outlines of this Archaean body 

 can be distinctly traced, rising in points through the varying thicknesses of 

 the overlying Cambrian strata. On the broad gravelly terraces which stretch 

 out to the westward from the base of the peak, broken masses of quartzite and 

 limestone are seen lying, sometimes flat, sometimes tipped up at steep angles, 

 and dipping both east and west. It is evident that these are the remains of 

 the Cambrian and Silurian beds which form part of the western fold; but the 

 masses are too much obscured to afford any definite structure-lines which 

 may give the clue to the position of the beds beneath the valley. Extensive 

 hot springs are found in the quartzites of these terraces near the railroad, 



