Great Lakes/St. Lawrence Lowlands
By: Abdullah, Ankit, Brian, Gurbaaz, Jasroop
History of the formation of the Great Lakes and St. Lawrence Lowlands
How Old Are The Great Lakes and St. Lawrence Lowlands, What Type of Rocks can be found?
The bedrocks were formed from sedimentary rocks from the Paleozoic Era, as for the geologic age of the Great Lakes and St. Lawrence Lowlands. the Great Lakes and St. Lawrence lowlands began to form at the end of the last glacial period around 10,000 years ago. As the retreating ice sheets carved basins into the land and they became filled of melted water from the glaciers.