BOOK REVIEW — Ontario’s rocks

Rock ONtario, published by the Ministry of Northern Development and Mines. Contact: Mines and Minerals Information Centre, Room M2-17, Macdonald Block, 900 Bay St., Toronto, Ont. M7A 1C3, or Publication Sales, 933 Ramsey Lake Rd., Level 2B, Sudbury, Ont. P3E 6B5. 89 pages.

Illustrated with more than 100 photographs and drawings, Rock ONtario tells the story of Ontario’s geology in layman’s terms. Subjects include plate tectonics, volcanoes, earthquakes, glaciation and the province’s major geological areas. Included is a description of the economic importance of geology.