Search results
Results from the WOW.Com Content Network
Laurentia basement rocks. Laurentia or the North American Craton is a large continental craton that forms the ancient geological core of North America.Many times in its past, Laurentia has been a separate continent, as it is now in the form of North America, although originally it also included the cratonic areas of Greenland and the Hebridean Terrane in northwest Scotland.
The North American plate is a tectonic plate containing most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores.With an area of 76 million km 2 (29 million sq mi), it is the Earth's second largest tectonic plate, behind the Pacific plate (which borders the plate to the west).
On a map showing only volcanic rocks, the west coast of North America shows a striking continuous north–south structure, the American Cordillera. The North American Cordillera extends up and down the coast of North America and roughly from the Great Plains westward to the Pacific Ocean , narrowing somewhat from north to south.
The Canadian Shield is a collage of Archean plates and accreted juvenile arc terranes and sedimentary basins of the Proterozoic Eon that were progressively amalgamated during the interval 2.45–1.24 Ga, with the most substantial growth period occurring during the Trans-Hudson orogeny, between c. 1.90–1.80 Ga. [5] The Canadian Shield was the ...
Templates that present a map or maps of North American areas. The pages listed in this category are meant to be function templates , i.e. templates that produce text, images or other elements . This page is part of Wikipedia's administration and not part of the encyclopedia.
Hearne Craton; Nain Craton (part of North Atlantic Craton) North American Craton (Laurentia) Rae Craton; Sask Craton; Sclavia Craton; Slave Craton, Northwest Territories, Canada (4.03–3.5 Ga) Superior Craton, Canada and northern United States (3.7–2.7 Ga) Wyoming Craton
Laurentian Craton, also known as North American Craton – Craton forming the geological core of North America (Canada and United States) Insular plate – Ancient oceanic plate; Intermontane plate – Ancient oceanic tectonic plate on the west coast of North America about 195 million years ago; Izanagi plate – Ancient tectonic plate; Mexican ...
The principal tectonic plate in this region (Washington, Oregon, Idaho) is the North American Plate, consisting of a craton of ancient, relatively stable continental crust and various additional parts that have been accreted; this is essentially the whole of the North American continent. The interaction of the North American plate with various ...