Surficial Geology of Southern Ontario

The Surficial Geology of Southern Ontario GIS dataset is a product of the Ontario Geological Survey and contains surface and near-surface geological materials, mapped at a nominal depth of 1m. The data are useful for many purposes, including ground and surface water studies, other environmental studies, geotechnical investigations and mineral exploration. The scale of the geology data is nominally 1:50,000. Most of the individual maps assembled for the Surficial geology of southern Ontario are of this scale, but some smaller-scale data was also used.

Coordinate system: UTM - NAD 83, Zones 17 and 18.
Source format: ESRI Coverages (ArcGIS)
Released: 2003
Library Call Number: GD.CA.23 (Ontario)

Please note that the Map and Data Centre also holds a large collection of very detailed paper maps for Ontario Bedrock and Surficial Geology. Please see the Maps & Atlases page for more details.

Restrictions on Access

This resource is available to University of Western Ontario students, faculty and staff for academic, research or personal reasons.  Patrons will be required to present a valid UWO ID card and sign a release form when requesting the data. Data must be requested in person at the Map and Data Centre Reference desk.

Data Manipulation / Usage

The Map and Data Centre has 2 GIS workstations equipped with ArcGIS 10.0 and other software to explore/manipulate the data.  UWO users may also copy requested resources to a data storage device (ex. USB flash drive, CD-R) for research or teaching use outside of the library. The Ontario Geological Survey should be cited in any maps or graphics generated.

Sample View of the Data

Surficial Geology in the London, Ontario area

Sample Citation

Surficial Geology of Southern Ontario; Miscellaneous Release—Data 128. [computer file]. Sudbury: Ontario Geological Survey, 2003.