1:250 000 scale bedrock geology of Ontario

A 1:250 000 scale map of the bedrock geology of Ontario.

This seamless GIS dataset includes such themes as bedrock units, major faults, dike swarms, iron formations and kimberlites, and also includes an interpretation of the Precambrian bedrock geology underlying the Hudson Bay and James Bay lowlands Phanerozoic cover.

This product is intended for use at scales of 1:250 000 and smaller.

This data is best viewed using Google Earth or similar Keyhole Markup Language (KML) compatible software. For instructions on how to use Google Earth, read the Google Earth tutorial.

[KML]: Keyhole Markup Language [GIS]: Geographic Information System

Ministry contact: ndmminister@ontario.ca

Additional information

Tags
Geographic coverage
Ontario
Last Validated Date
April 30, 2026
Update frequency
As required

1:250 000 scale bedrock geology of Ontario

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  • ZIP
    1:250 000 Scale Bedrock Geology of Ontario English

    Last Updated: February 1, 2011

    The Ontario Geological Survey has compiled a 1:250 000 scale map of the...

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Date: October 10, 2012

  • KML
    Data English

    Last Updated: October 10, 2012

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