The limestone is dolomitic, and is cut in all directions by great 
numbers of quartz veins; it sometimes contains garnets, and is F 
associated with iron and copper pyrites. At the distance of about } 
a mile is another band of limestone precisely similar, and accom- 
nied, like it, with slates and quartzose beds, which seem to be j 
altered sandstones, and make the first high lands of the mountain 
district. ‘This ridge, with its two bands of dolomite, appears to 
be synclinal, and it is traced about ten miles from the province 
line, where it dies out. Here another hill about half a mile to 
the 8. E., apparently an anticlinal, takes up the same measures. 
To these succeed a series of more or less quartzose chloritic 
rocks, with an imperfect slaty cleavage. They seem to be alter- 
ed sandstones, which upon their western border, where the alter- 
ation has been less profound, still present their original structure. 
Following these, appears a band of limestone resembling the last, 
bi often divided into two or three belts by green chloritic or gray 
ose slates, interstratified with beds of an impure specular iron . 
ae more or less mixed with chlorite and often titaniferous. 
limestones sometimes contain green and purplish tale and occa- 
sional crystals of chromic iron; they are marked by the same 
quartz veins as before. About two miles farther ron, a precisely 
similar belt occurs, and the interval is filled with taleose, sblbeisia 
and epidotic slates, associated with bands of magnetic and spec- 
ular i rac The epidote forms little nodules, and is often associa- 
th quartz ; rutile with specular iron .is sometimes found : 
coyotallized 4 in quartz veins. From this, extending to the Sutton 
valley, which is the su d prolongation of co —— is 
about a mile of hard quartzose rocks slightly chlorit 
Another section is presented pon the St. Seneetiel which cuts 
the rocks nearly at right angles; it shows the dark colored slates 
and limestone supporting greenish silicious slates, followed by 
a belt of brown:-weatheting dolomite, ‘interstrati tified and accom- 
panied with purple sandstones and red sl to which succeeds at 
a distance of about a mile, another belt of li one, with quartzose 
bands. e intermediate rocks are nines, and conglome- t 
rates, often almost pure quartz; southeast of ae a are | 
seen two or three miles of chloritic rocks, wit es of epidote 
e, with veins 
16 Geology of Canada. 
pe 
slate. ‘To this sneceeds an extent of heavy quartz rock, slightly 
talcose, and another band of dolomite interstratified with talcose 
slate, which is followed by the same fine greenish silicious slates 
as were obeerved's n the western n side. — these are fou nd 
