THE URAL CHAIN 
ONE GREAT SERIES OF DEPOSITS. 
403 
to the Devonian and Carboniferous limestones of the Serebrianka and Tchussovaya 
rivers upon the west, a persistent strike and general conformity of succession from 
centre to flanks is seen to prevail throughout the range. With numerous brea s, 
curvatures, and even apparent reversals, all these strata, whether metamorp ic in 
their centre, unaltered on the west, or highly altered amid the granites on t e 
eastern flank of the chain, are conformable to each other , and all have the same me 
of bearing as the higher adjacent portions of the axis ; the strike of the westernmost 
zone of carboniferous limestone being perfectly parallel to the most central band 
of chlorite schist and quartz rock, in the same latitude. The North Ural of the 
Russian miners is, therefore, to be considered as made up of one great sedimentary 
series, which originally accumulated in successive masses, has since been metamor- 
phosed, pierced and broken up, on parallel lines of intumescence, eruption and 
dislocation. . . 
In subsequent chapters we shall further develope the striking lithological di- 
stinctions between the rocks upon the opposite flanks of the central ridge of the 
chain. 
