|
Proceedings of the Geological Society |
The country to the northward of Lakes Superior and Huron, and of the St. Lawrence River and Gulf, is for the most part a wilderness of primitive or granitic rocks. These rocks, from the northern shores of the two lakes just mentioned, pass close to the northward of Lake Simcoe, and are met with in ascending all the streams tributary to the Rice Lakes, and to Ontario from the north. Sending off a spur to the southward, they are seen at the N. E. extremity of the last-named lake on the immediate shore of the St. Lawrence, which they cross some miles below, forming many of the Thousand Islands, and uniting with the primary region in the northern part of the state of New York:
From Kingston and the Thousand Islands the primitive beds may be traced to the N.E., until they cross the Ottawa River near Lake Chât. Thence, continuing in the same direction, they form the northern side of the valley of the St. Lawrence, and the rapids and falls a few miles up its tributary streams, till they abut upon that river at Cape Tourment, nine or ten leagues below Quebec. From the point last designated, the granitic rocks continue without interruption to form the northern shore of the St. Lawrence river and gulf to the strait of Belle Isle.
...
This 250-word extract was created in the absence of an abstract.
