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Geology

Pages related to the geology of the Algonquin dome and upper Ottawa Valley.

The Barron Canyon

The Barron River Canyon is a Nature Reserve Zone in Algonquin Park, comprising a series of spectacular gorges with granite walls towering 100 m and more above steep talus slopes which grade down to the water.

Brent Limestone Cliff

The Brent Limestone Cliff, a Nature Reserve Zone in Algonquin Park, comprises a 15-foot-high limestone cliff stretching 150 feet along the south-east side of a small point on Cedar Lake at Brent. In places the cliff is deeply undercut by wave action. The limestone contains abundant fossils of several species of marine animals and shell fish.

Glaciation of the Ottawa Valley

Some pictures and comments pertaining to the glaciation of the Ottawa Valley

The Greenbough Esker

Some pictures and comments pertaining to the Greenbough Esker.

Lake Travers DeGeer Moraines

A description with photographs of the DeGeer moraines at Lake Travers in Algonquin Park

The Mink Lake Sill

A description with photographs of the Mink Lake Sill. This sill largely controlled the flow of glacial melt water down the Petawawa River Valley during the Wisconsin deglaciation.

The Ottawa Bonnechere Graben

The Ottawa Valley is a rift valley, a dropped down block of bedrock several tens of kilometers wide, known as the Ottawa Bonnechere graben.

Return to the Brent Crater

An account with photos of exploring the Brent Crater Trail in Algonquin Park with particular emphasis on the limestone gully on Muskwa Creek and the cedar swamp.

Bush Log and Notes

The McElroys of Point Alexander

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