This section is a collection of Geological fact about this area. It's a mixed bag of information about factors that go into the makeup of the local geology. Some of it's technical and some of it isn't. We'll try to keep it so everyone can understand it. It shouldn't be hard to keep it simple since we aren't geologists and we have to be able to understand it ourselves. For further study check out this excellent database of links to geological and mining info.

Geological Timescale

The age of rocks is determined by radiometric and carbon dating tests. If you find a fossil of plant or animal life in the rocks you find you can be fairly sure that it is less than 1,500,000,000 years old since almost no fossils are found in precambrian age rocks. Just a tip.

Geological Regions of Ontario

Two thirds of the Province of Ontario is dominated by the Precambrian(Canadian) Shield. These are the oldest rocks in Ontario and are called basement rocks. Even as stable as they are today they went through several periods were these rocks were affected by large scale earth movements and metamorphic changes in relation to specific geological events. Several "Structural Provinces" resulted from these changes and have been given different names. They are; The Superior Province, Southern Province and the Grenville Province. At Cobalt, we are primarily concerned with the Southern and Superior Provinces since The Cobalt Camp lies along the boundary between them. ( See Map )

Cobalt also sits on the edge of a large basinlike depression known as the Cobalt Embayment. This inferred basinal area is home to a tremendous wealth of mineral production and stretches from Cobalt in the east to beyond Sudbury in northwestern Ontario.The geology of the Cobalt Embayment is comprised of three principal rock types; Sediments of the Huronian Supergroup overlying Archean volcanics and sediments both intruded by late stage Nippissing Diabase. See Table 1 - Litholgical Units for description of rock types.

Check out the schematic Cross Sections of the Southern and Superior Provinces and an Area of the Cobalt Camp.

Mineralization and Mineral Potential

Discussion Paper

The following links will lead to papers and discussions relating to the diamond potential of our Cobalt Area properties. As I acquire other related links I will add them to this list as long as the links remain current and the documants remain available. Anyone wishing hard copies should contact the Ministry of Northern Development and Mines directly by phone, mail or online.


Open File Reports  and Summary of Fieldwork2002 and other activities, in their entirety are available at the Ministry of Northern Development and Mines at the following Link http://www.mndm.gov.on.ca/mndm/mines/ims/pub/sfw/default_e.asp

The following PDF files make direct reference to the properties of Prairie C and  other claims currently optioned by Cabo Mining Corp. Hot off the government presses.

Are the Neoarchean Diamond Bearing Breccias in the Wawa Area Related to the Late-Orogenic Alkalic and "Sanukitoid" Intrusions?  Authors: G.M. Stott, J.A. Ayer, A.C. Wilson and G.P.B. Grabowski
http://www.mndm.gov.on.ca/mndm/mines/ims/pub/sfw/sfwpdf/Art9.pdf

A Predicitve Model for Diamond- Bearing Rocks in Ontario
Authors: P.C. Thurston and J. Newsome
http://www.mndm.gov.on.ca/mndm/mines/ims/pub/sfw/sfwpdf/Art19.pdf  


Kirkland Lake Regional Resident Geologist Report: Kirkland Lake and Sudbury Districts; 112p., 2001 1.9 Mb.
http://www.mndm.gov.on.ca/mndm/mines/ims/pub/roa/roapdfs/OFR6083.pdf