THE OVERLAND ROUTE OGDEN TO Sa:N' FRAISTCISCO. 20 7 



t 



F 



At Towle are some of the higher orchards of the Sierra^ and here 

 airain, close at hand, is the Lincoln Hi<i;hwav. In the woods here- 



abouts arc summer camps and small hotels. In the 

 Towle. ^^^ ^£ ^j^^ little stream just below the railroad sta- 



Elevation 3,692 feet. 

 Omaha 1,623 miles. 



some mag 



asb 



tos. So far as known the deposits are not of sufficient extent to be of 

 value. They occur with the serpentine, the usual association for mag- 

 neeite deposits. Dark ledges of amphibolite (the same belt that occurs 

 at Giant Gap) and of serpentine show along the railroad. 



Just below Towle is a railroad cut in some of the white volcanic 

 tuff (rhyolitic) abeady referred to as occurring below the andesite 



tuff-breccia. These volcanic deposits are mere rem- 

 nnntft. and once extended across the areas now occu- 



Alta. 



Elevation 3,602 feet ^^^^ ^^ ^]^g cauvons. The andcsito tuff-breccia par- 



ticularly covered enormous areas of the west slope of 



miles 



movements 



into by the streams. At Alta are summer 



thickly timb 



cultivat 



Just beyond Alta is a sidetrack where round bowlders of white 



diergfinsrs 



are shipped- These bowlders are used in the furnaces of the railroad 

 repair shops at Sacramento. They come from a placer mine which is 

 called Nary-a-Red, referring to the absence of the usual red bowlders 

 in these gravels. The pure white cobbles remain 



d awav bv the hvdraulic method 



mining tor g 



Beyond a bend on the north side of the ridge the to^vvTi of Dutch 

 Flat, almost surrounded by the great pits made by hydraulic wash- 



g for 2^0 Id. comes 



Elevation 3,399 feet. 

 Omaha 1,626 miles. 



Dutch Flat. ^^^^ ^^^ ^^1^^ ^Yie railroad. The railroad station 



e same name is about a mile south of the to%\-n, 

 former settlement of Chinese miners that was 

 known as Chinatown. Here the view from the railroad embraces 

 a region that was prominent in the early mining days of California 



The gold of Dutch Flat came chiefly 



for its yield of placer gold, 

 from the upper or bench gravels, deposited by the rivers of Ter- 

 tiary time^ and now high above the present streams. Hydraulic 



1 The Tertiary streams that flowed ^ and flows of stony mud (tuff-breccia) 



down the wuotern slope of the Sierra occu- 

 pied wider valleys than the present ones j present summit. When 

 and accumulated extensive deposits of i slope was increased by the tilting of the 

 gold-bearing gravels along theii' channels, j range in later Tertiary time the rivers cut 

 These travels were later covered by lavas - new canj^ons, and many of the old chan- 



near 



