limestone quarries rock formations lockport dolomite

Ontario Limestone - David K. Joyce Minerals

Mineral Occurrences in the Paleozoic Rocks of Southwestern Ontario Background. There are about 40 limestone and dolomite quarries in south-western Ontario but only a few of them have produced significant mineral specimens.

The Rocks -- Rochester Academy of Science, Inc.

I. The Over-all Picture:. The bedrock in Western New York consists of a succession of lower and middle Paleozoic sediments-chiefly shales but including prominent beds of dolomite, cherty limestone and thick bedded sandstones which are weather resistant and tend to form cliffs.