why do people live in the canadian shield
The Canadian Shield is a, consisting of five smaller, physiographic provinces: the, Davis, Hudson and James. The shield extends into the as the (connected by the ) and the. The Canadian Shield is U-shaped and is a subsection of the Laurentia
signifying the area of greatest impact (scraping down to bare rock) creating the thin soils. The Canadian Shield is more than 3. 96 billion years old. The Canadian Shield once had jagged peaks, higher than any of today's mountains, but millions of years of erosion have changed these mountains to rolling hills. The Canadian Shield is a collage of plates and accreted juvenile arc and of the Eon that were progressively amalgamated during the interval 2. 45 to 1. 24, with the most substantial growth period occurring during the, between ca. 1. 90 to 1. 80 Ga.
The Canadian Shield was the first part of North America to be permanently elevated above sea level and has remained almost wholly untouched by successive encroachments of the sea upon the continent. It is the Earth's greatest area of exposed Archean rock. The are mostly from the Supereon (between 4. 5 billion and 540 million years ago), and have been repeatedly uplifted and eroded. Today it consists largely of an area of low relief 300 to 610Pm (980 to 2,000Pft) above sea level with a few and low mountain ranges (including the and ) probably eroded from the plateau during the Era. During the Epoch, continental ice sheets depressed the land surface (see ), scooped out thousands of lake basins, and carried away much of the region's soil.
When the section is included, the Shield is approximately circular, bounded on the northeast by the northeast edge of Greenland, with in the middle. It covers much of Greenland, most of north of the, much of including northern sections of the southern peninsula between the, the of, the northernmost part of Lower and all of, northern, northeastern, the central/northern portions of away from Hudson Bay, northern, a small portion of northeastern, and the mainland northern to the east of a line extended north from the Saskatchewan/Alberta border ( and ). In total, the exposed area of the Shield covers approximately 8,000,000Pkm (3,088,817PsqPmi).
The true extent of the Shield is greater still and stretches from the Western Cordillera in the west to the in the east and as far south as Texas, but these regions are overlaid with much younger rocks and sediment. The underlying rock structure also includes Hudson Bay. About 3 billion years ago part of the Earths crust began to form what we now know as the Canadian Shield. It is also known as the Precambrian Shield because it formed in the period of time called the Precambrian era. The Canadian Shield is a large region. In the northern region of the country it is the largest sub-region. Northeast Alberta, northern Saskatchewan, northern Manitoba, southern N. W. T, Ontario (except for the peninsula), Quebec and Labrador are all part of the Canadian Shield.
The bodies of water include Great Slave Lake, Lake Athabasca, Reindeer Lake and part of Lake Superior. The landscape within the Canadian Shield can be described as rocky with many different types of lakes and rivers. This region would be a great place to live because the weather is great. Its cold in the winter, for those who like to ski, snowboard or play ice hockey. Another reason you might want to live there is because of the animals. You can fish and hunt for bears. Large cities like Quebec City can attract people to live in the Canadian Shield. It has lots to offer and would be a great place to live.
- Views: 121
why do we have eyebrows and eyelashes
why do the united states and canada have strong economies
why do some zits hurt really bad
why do some plants have red leaves
why is remembrance day not a holiday in ontario
will and grace cast where are they now
why do you want to work in canada