Search results
Results From The WOW.Com Content Network
The Canadian Shield is among the oldest geologic areas on Earth, with regions dating from 2.5 to 4.2 billion years. [8] The multitude of rivers and lakes in the region is classical example of a deranged drainage system , caused by the watersheds of the area being disturbed by glaciation and the effect of post-glacial rebound . [ 9 ]
This ecoregion consists of rolling hills, lakes, bogs and rocky outcrops covering a large curved swathe on the Canadian Shield from the Echoing River in Northern Ontario, running southeastwards through Thunder Bay District to the north shore of Lake Superior and then northeastwards into western Quebec.
The earliest part of the shield is metamorphosed Archean rocks, originally volcanic in origin. Numerous terranes were accreted onto this Archean core during the Proterozoic to form the Canadian Shield. [4] The southern Archean province is the Superior Craton, it is formed by the combination of a greenstone-granite and a gneiss terrane. [5]
The Midwest Canadian Shield Forests is an ecoregion in Canada, classified as a Taiga and Boreal Forests Biome. [2] Setting
Boreal forest covers much of the shield, with a mix of conifers that provide valuable timber resources in areas such as the Central Canadian Shield forests ecoregion that covers much of Northern Ontario. The Canadian Shield is known for its vast mineral reserves such as emeralds, diamonds and copper, and is there also called the "mineral house ...
Northern Canadian Shield taiga is a taiga ecoregion located in northern Canada, stretching from Great Bear Lake in the Northwest Territories to Hudson Bay in eastern Nunavut. The region supports conifer forests to its northern edge, where the territory grades into tundra .
The term shield, used to describe this type of geographic region, appears in the 1901 English translation of Eduard Suess's Face of Earth by H. B. C. Sollas, and comes from the shape "not unlike a flat shield" [2] of the Canadian Shield which has an outline that "suggests the shape of the shields carried by soldiers in the days of hand-to-hand ...
The Laurentian Region, as recognized by Natural Resources Canada, is part of the plateau and dissected southern rim of the Canadian Shield in the province of Québec. It is a western extension of the Laurentian Mountains, and continues across the Ottawa Valley into Ontario as the Opeongo Hills.