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The Trans-Hudson orogeny or Trans-Hudsonian orogeny was the major mountain building event that formed the Precambrian Canadian Shield and the North American Craton (also called Laurentia), forging the initial North American continent.
Trans-Hudson orogeny, also known as Hudsonian orogeny – Mountain-building event in North America ... South America Toco orogeny.33 .30 South America Andean orogeny.20 0
Three orogenies formed the Precambrian shield, the Kenoran (Laurentian-Algoman), Hudsonian (Penokean) and Grenville Orogeny. [5] [6] [7] Between 2.2 and 2.5 billion years ago was the Kenoran Orogeny, which was overlain by the Hudsonian Orogeny 1700 to 1900 million years ago.
Also called the Wyoming Province, it is the initial core of the continental crust of North America. The Wyoming Craton was sutured together with the Superior and Hearne-Rae cratons in the mountain-building episode that created the Trans-Hudson Suture Zone to form the core of North America . It was incorporated into southwest Laurentia ...
Geological map of north-western Canada. Snowbird Tectonic Zone marked F. The Snowbird Tectonic Zone (STZ) is a geological structure in the western Canadian Shield which forms a geophysical boundary between the Hearne Craton and the south-west arm of the Rae Craton. [1]
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Orogeny (/ ɒ ˈ r ɒ dʒ ə n i /) is a mountain-building process that takes place at a convergent plate margin when plate motion compresses the margin. An orogenic belt or orogen develops as the compressed plate crumples and is uplifted to form one or more mountain ranges .
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.