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NOTES ON THE GEOLOGY AND PALEONTOLOGY OF 
THE ROCKLAND QUARRIES AND VICINITY, IN 
THE COUNTY OF RUSSELL, ONTARIO, CANADA. 
by Henry M. Ami, M.A., D. Sc. 
On the 24th of June last, the Ottawa Field Naturalists' Club 
held a very successful excursion to the new Rockland quarries. These 
are situated about two miles to the south-east of the village of Rockland, 
in the Township of Clarence, in the County of Russell, Ontario, and 
were opened with a view of obtaining the stone required for the con- 
struction of the Soulanges canal. This locality proved to be very 
interesting to the geologist, from the fact that six distinct Palaeozoic for- 
mations were met and examined. Mr. Archibald Stewart, government 
contractor and proprietor of the new Rockland quarries, and Mr. W. 
C. Edwards, M. P. for Russell, had extended to the Ottawa naturalists 
a hearty invitation, and made them welcome. Everything went off well 
and the day was thoroughly enjoyed by all. Refreshments and convey- 
ances were freely supplied by these two gentlemen, and the excursionists 
duly appreciating their kindness, unanimously thanked them for their 
hospitality. 
Geological Features of Rockland. 
The following are the different geological formations met with at 
Rockland, between the mills on the Ottawa River front, and the 
new quarries, some two miles distant, in descending order. 
These formations succeed each other*, in regular order, as 
seen in the table, with only two unconformities, the first below 
the glacial drift, and the second below the Potsdam forma- 
tion. They occupy that zone of country lying between the escarpment 
at the quarries and the Ottawa River. This escarpment is similar in 
origin and aspect, to the bluffs and escarpments at Ottawa, and formed at 
one time the southern shore or cliff-margin of the Pre glacial stream 
which flowed from the west in almost precisely the same channel as 
does the Ottawa River at present. 
The Calciferous and Chazy formations form the widest belts, whilst 
the Trenton, Black River and Chazy formations, are the most fossiliferous 
in the distru t 
