That map is from the 2010-2011 annual report of the Environmental Commissioner of Ontario – http://www.ecoissues.ca/index.php/Shale_Gas_and_Hydraulic_Fracking#The_Ontario_Government_and_Shale_Gas
The full report is posted here – http://www.eco.on.ca/index.php/en_US/pubs/annual-reports-and-supplements/2010-11-annual-report—engaging-solutions
This map from the report indicates that fracking may occur in many locations which aren’t yet highlighted in the maps on this page of the “Stop Fracking Ontario” web site – https://stopfrackingontario.wordpress.com/fracking/in-ontario
Note: the Environmental Commissioner’s report does not acknowledge many of the problems and threats that come with fracking. Yet, the statements from the Ministry of the Environment and the Ministry of Natural Resources in an appendix are even less critical toward the prospects of fracking in Ontario; those two Ministries mainly suggest that if there is fracking, it should be fine.