Last updated: May 2026
Ash Quarry is an editorial reference on Canadian Shield geology, maintained by Ash Quarry Media Inc., a federally incorporated company based in Toronto, Ontario. The content covers the Precambrian geological record of Canada — rock types, structural provinces, mineral systems, and the history of resource extraction that shaped the country's economy.
The focus is the Canadian Shield — the Precambrian basement rock that underlies roughly half of Canada's land area. Articles address geological topics at a level suitable for interested general readers, students, and professionals in related fields who want a concise reference rather than a primary research paper.
Three broad areas receive the most attention:
All factual claims are drawn from published sources: Geological Survey of Canada open files and maps, provincial geological surveys (Ontario, Quebec, Manitoba, Saskatchewan), peer-reviewed journal articles, and publicly available corporate filings where production data is concerned. Where uncertainty exists in the scientific literature, that uncertainty is noted rather than resolved by assertion.
The site does not carry advertising and does not accept sponsored content. Articles are updated when significant new data, revised production figures, or corrections to published information become available.
Factual corrections, source suggestions, and questions can be sent to info@ashquarry.org or by using the contact form on the homepage. We respond to substantive corrections within five business days.
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Email: info@ashquarry.org