Geology of the Caledon Outwash, Ontario

Canadian Institute of Mining, Metallurgy and Petroleum
W. R. Cowan
Organization:
Canadian Institute of Mining, Metallurgy and Petroleum
Pages:
6
File Size:
5976 KB
Publication Date:
Jan 1, 1984

Abstract

The Caledon Outwash is a large deposit of glaciofluvial gravel and sand located 55 km north west of down town Toronto. For the most part it was laid down in a meltwater channel fronting the Paris Moraine about 14,000 years ago. Applying the braided bar model of Eynon and Walker (1974) the principal facies present are imbricated coarse gravels (bar corefacies); crudely stratified, imbricated bar top sandy gravels; and trough crossbedded side channel sands and gravelly sands. Of lesser importance are crossbedded bar front gravels, shallow braided stream facies gravels, and stoss side facies sands and pebbly sands (rare). Lithologically these deposits are characterized by FIGURE I. Geological relationships of Caledon Outwash. Industrial Minerals in Canada up to 95% Ordovician limestone and siltstone in the gravel fraction. A siltstone content of up to 34% requires that beneficiation be carried out for the production of better quality aggregates. Resources remaining are estimated to exceed 500 million tonnes in 3000 ha of the most suitable part of the deposit. Present production is about 4.5 million tonnes per year, shared by several producers.
Citation

APA: W. R. Cowan  (1984)  Geology of the Caledon Outwash, Ontario

MLA: W. R. Cowan Geology of the Caledon Outwash, Ontario. Canadian Institute of Mining, Metallurgy and Petroleum, 1984.

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