Enjoy MacGregor Point's exciting geologic history while you camp! The shoreline is an excellent place to search for interesting rocks. Want to learn more about a particular rock you found? Why not bring it to the Visitor Centre staff and they'll do their best to help you learn more about it. Just remember, because MacGregor Point is a natural environment provincial park protected by the Provincial Parks and Conservation Reserves Act (PPCRA), you may not remove rocks from the park.
Post Glacial Lakes
Lake Algonquin: formed approximately 10,000 years ago
Lake Stanley: formed approximately 7,500 years ago
Lake Nipissing: formed approximately 5,000 years ago
Lake Huron: Now
The Huron Fringe
The Huron Fringe is a series of wetlands, just inside of the shoreline of Lake Huron that extends from Tobermory to Sarnia. These wetlands were formed by the shorelines of the glacial lakes, whose soil doesn’t allow for drainage of water back into Lake Huron. The Huron Fringe is an important migratory route for birds traveling both north and south during the migration seasons and is home to many important wetland species.
The park includes approximately 7km of Lake Huron shoreline. Rugged stones and boulders characterize this feature, short stretches of sandy beach, low sand dunes, and several shoreline wetlands. Each of these habitats is home to a unique community of flora and fauna, including at least 10 provincially rare plant and animal species. Sunsets along this stretch of shoreline are spectacular - drawing thousands of visitors to the area each year. The shoreline also has considerable value as a source for fossils and rock formations that demonstrate landform change over geologic time. Of particular importance is an outcropping of dolostone from the Bois Blanc period – making MacGregor Point one of only a handful of locations along the western shoreline of Lake Huron where this formation can be seen. This outcropping can be found at the ‘Dog Beach’ near the Huron campground.
The Geology of MacGregor, A Poem by Kate Little
400 million years ago this place was a sea,
The earth went through cycles and started to freeze.
The glaciers advanced, grew out from the North,
And spent a long while moving back and forth.
Over 1 million years this ice sheet sat here,
But 10,000 ago, it disappeared
Ice left water behind in big glacial lakes
Every now and again, melting hit the brakes
Lake Algonquin was first to cover this land
It made a shoreline of clay, gravel and sand
Next Nipissing sat here for a spell
It made a gravelly shoreline as well
Algoma was last, it wasn’t here long
Water kept receding back where it belonged
To our big lake, Great Lake Huron
The last glacial lake, but now let’s move on
The shorelines are barriers for water draining out
It sits in depressions, gathers, hangs about
These shorelines and water formed wetlands you see
The wetlands around us which forever will be
A home to great creatures both big and small
And it all goes back to when Earth was a snowball.