Learning Modules

The Georgian Bay Geopark is a portal to research and education that furthers study of our area’s unique geoology and supports our mission to encourage all to Explore the Geological Past and Create a Sustainable Future.

Modules

These educational modules were prepared as part of Ontario’s Virtual Learning Strategy Program, designed to support online learning in a university environment. They constitute part of a fully online course (including assessments) hosted within a Learning management system that can be accessed here.

Module 1

Overview of the Georgian Bay and the Case for Geoconservation

By the end of this lesson, you will be able to:

• Locate major land features of the Georgian Bay.
• Describe the basic geological structure of the Bay and how it relates to major physiographic and ecological divisions.
• Outline why the Georgian Bay is worthy of geoconservation.

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Module 2

Geology Fundamentals

By the end of this lesson, you will be able to:

• Differentiate between the 'compositional' and 'mechanical' layers of the Earth and their properties.
• Explain how plate tectonics moves the continents around on Earth's surface.
• Refer to some of the common rock types in Georgian Bay and explain how they formed.

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Module 3

The Paleoproterozoic Southern Province

By the end of this lesson, you will be able to:

• Demonstrate a full Wilson's cycle within the geologic record of the Southern Province.
• Interpret how climate change influenced the rock types found in the Huronian Supergroup.
• Outline the major events of the Paleoproterozoic.

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Module 4

Rodinia and the Grenville Province

By the end of this lesson, you will be able to:

• Describe the plate tectonic situation of the formation of Rodinia.
• Understand how the Grenville Orogeny 'worked' and identify the parts of the Grenville Province.
• Link metamorphic rock types to geological processes.

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Module 5

The Paleozoic Platform

By the end of this lesson, you will be able to:

• Differentiate between clastic and carbonate rocks and their paleoenvironmental significance.
• Outline major changes in the fossil record through the Paleozoic.
• Identify factors that influence the deposition of different sediment types.

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Module 6

Glacial History of Georgian Bay

By the end of this lesson, you will be able to:

• Outline factors that cause glaciation and influence glacial flow.
• Use the geomorphological record to characterize the history of glacial activity.
• Compare glacial activity during the Pleistocene with the conditions of the Antarctic Glaciers today.

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Module 7

Niagara Escarpment

By the end of this lesson, you will be able to:

• Trace the Niagara Escarpment from a topographic map.
• Describe a variety of processes that have shaped the Escarpment and the landforms that result.
• Outline the history of natural phenomenon shaping the Escarpment.

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Module 8

The Holocene Of Georgian Bay

By the end of this lesson, you will be able to:

• Define terms relating to sediment remobilization and beach processes.
• Outline the history of the Penetang Peninsula and Wasaga Beach.
• Interpret the history of changing lake levels by observing landforms.

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Interactive Education

Law of Inclusions

(with an example from the Huronian Supergroup)

Limestone Pavement

Do you see the fossils?

The Geopark is making research available for all communities in the Bay. These are the first two in our publicly available library.

LiDAR mapping of glaciated bedrock surfaces

Recent advances in LiDAR collection technology are quickly revolutionizing numerous scientific fields, from glaciology to ecology to archaeology. By emitting millions of laser pulses and measuring their reflections, LiDAR produces highly accurate 3D maps that reveal subtle features across wide and often inaccessible landscapes.

The Gowganda Formation

Across the North Shore of Lake Huron, and in the rugged La Cloche Mountains lies the Gowganda Formation — one of the world’s most remarkable records of an ancient ice age, more than 2 billion years old, a time period known as the Paleoproterozoic. These rocks formed on the floor of the long-vanished Huronian Ocean, which was surrounded by active fault scarps, large river systems, and dynamic glaciers.

See LIDAR images of Deep Time Zone 7: The Meeting Place

Discover the DEEP TIME geology of the Georgian Bay Geopark

DEEP TIME’ is the themed expression of how exploring and understanding the past helps create a better future. The unique DEEP TIME story and its eight geological chapters encourages both visitors and residents to know the past, celebrate the present and help create a more resilient future for the Bay and its many communities.

DEEP TIME Zone 1

The Huronian
Ocean

2.7 billion years
Sault Ste Marie to Serpent River

The ancient mineral-rich rocks of the North Channel record the breakup of the planet’s oldest supercontinent – and the birth of the Huronian Ocean.

DEEP TIME Zone 2

Continents
Collide

1.8 billion years
Serpent River to Killarney

The Group of Seven’s white rolling quartzite hills are the stumps of mountains formed when landmasses collided to form supercontinent Nuna

DEEP TIME Zone 3

The Ancient
Himalayas

1.3 billion years
Killarney to Honey Harbour

The waterscape of the 30,000 Islands exposes the deep crustal roots of the immense Grenville Mountains formed when North and South America collided.

DEEP TIME Zone 4

Tropical
Seas

500 million years
Manitoulin Island

Much of North America was covered by warm shallow seas, teeming with early marine life that left fossil-rich limestones on Manitoulin Island.

DEEP TIME Zone 5

The Limestone
Coast

350 million years
Tobermory to Wiarton

Within the last 2 million years, the Bruce/Saugeen peninsula was scoured by Ice Age ice sheets that cut deep valleys into the face of the Niagara Escarpment such as at Owen Sound.

DEEP TIME Zone 6

Ice Ages &
Early Cultures

13,000 years
Collingwood to Wiarton

The raised beaches of glacial Lake Algonquin surround the coast of southern Georgian Bay like staircases and hosted the camps of caribou-hunting Paleo-Indians 11,000 years ago.

DEEP TIME Zone 7

The Meeting
Place

Last 10,000 years
Collingwood to Honey Harbour

The ancient hard rocks of the Canadian Shield meet the softer limestones of the ancient seas creating a stark contrast in landscapes, ecosystems, and a diverse cultural history unique in North America.

DEEP TIME Zone 8

Mindo Gami Great
Spirit Lake

4,000 years to today
Waters of Georgian Bay

In 1615 Samuel de Champlain called Georgian Bay ‘La Mer Douce’ (the sweet water sea). An early map also portrays it as Karegnondi, derived from ‘lake’ in the language of the Petun First Nation.

LiDAR mapping of glaciated bedrock surfaces

Recent advances in LiDAR collection technology are quickly revolutionizing numerous scientific fields, from glaciology to ecology to archaeology. By emitting millions of laser pulses and measuring their reflections, LiDAR produces highly accurate 3D maps that reveal subtle features across wide and often inaccessible landscapes.

For the present study, the focus is on understanding the broad expanses of bare bedrock for which Georgian Bay is famous. While long recognized as a glaciated surface, glaciers are complex systems with slow and fast zones, wet and dry areas, and shifting flow directions. Understanding modern ice sheets, such as those in Antarctica and Greenland, depends on understanding what happens at their base, which is inaccessible and can only be studied through “fossilized” glaciated surfaces like those of Georgian Bay. Mapping bedrock surfaces reveals new insight into the dynamics of ancient ice sheets that create a more accurate foundation for models of ice movement, both past and present.

Topographic map with geological features

Glacial grooves cut into Precambrian bedrock are often too small to be picked up on most topographic datasets. Datasets collected with drone-mounted LiDAR have high enough resolution to detect and map grooves only a few centimetres high such as those shown here.

The Gowganda Formation

Across the North Shore of Lake Huron, and in the rugged La Cloche Mountains lies the Gowganda Formation — one of the world’s most remarkable records of an ancient ice age, more than 2 billion years old, a time period known as the Paleoproterozoic. These rocks formed on the floor of the long-vanished Huronian Ocean, which was surrounded by active fault scarps, large river systems, and dynamic glaciers.

For centuries, the precise nature of the depositional setting, and the competing influences of tectonic activity and glaciation, has been hotly contested. The exquisite preservation and exposure of the rocks have made the Gowganda Formation the de facto benchmark for evolving models of the global climate of the Paleoproterozoic.

This research suggests that instead of direct glacial deposition, much of this material collapsed downslope as huge underwater landslides and debris flows. Its deeper significance is that geologists must rethink how they interpret ancient “glacial” deposits. The Gowganda records a dynamic interplay of factors, providing a globally unique window into how the depositional record preserves the story of Earth’s earliest ice ages.

Geological features on rock surface

Dropstones (labelled as an “outsized clast”) are isolated rocks dropped by floating ice. At this outcrop, they settled into laminated mud beside a large slump deposit, providing evidence of underwater landslides reworking glacial sediments.

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