St. Lawrence Lowlands – by Samiha and Jessica

St. Lawrence Lowlands

The St. Lawrence Lowlands is a very geographically diverse area. It’s full of rolling hills, glacial tills, fertile land, rivers and scenic waterfalls.

The formation started when the glaciers melted millions of years ago.  The receding glaciers created an ancient sea over the land. The minerals, animal waste, dead bodies, and other matter all settled to the bottom. After the ocean water receded, all of the land rose very quickly and created a temporary lake. This lake was drained many years ago.

Along with St. Lawrence minerals is their water. There  are 250,000 lakes and tons of rivers. Also St. Lawrence has rich soil which is because it’s believed by scientists that there was once a sea there. As well as minerals farming and water have many useful resources which are; arable land which is used for growing crops. Fresh water which is used for agriculture, industry and electrical power.

Glaciation played a big role in the creation of the St Lawrence lowlands. The Glacier created deep river valleys and glacial mountains as it moved along. These river valleys would later be the Niagara and the St Lawrence river. When the Glacier melted, it created a huge sea covering the landscape. All of the matter floating around in the water settled to the bottom, (minerals, animal waste and carcasses ). This created the sedimentary layer. This is also why the land is so fertile. The melting of the ice also created the Thousand islands. The Thousand islands were originally a mountain range which was flooded with glacier water. Receding glaciers also created the great lakes. The excess water in the great lakes emptied into the ridges the other moving glaciers created. This made the Niagara river and the falls. The rivers eroded the soft outer rocks and carried it away, leaving the hard rocks behind. This is how the Cuestas were created.

In Canada, St. Lawrence lowlands is the main producer of nickel, colbalt, salt and magnesium. There are several useful resources such as Iron ore which is used to make steal. Copper which is used for currency, construction, refrigeration etc. Zinc which is used in alloys, paints, cosmetics etc. Also in the St. Lawrence there are oil and gas deposits.