Algoman orogeny

The Algoman orogeny was a late Archean mountain-building event that deformed and metamorphosed rocks of the Canadian Shield, especially around 2.7 billion years ago.

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Plate tectonics: The theory that Earth's lithosphere consists of moving plates whose interactions shape the surface and recycle crust. The orogeny records tectonic forces that assembled and deformed Archean crust.
Archean: The eon of geologic time from about 4.0 to 2.5 billion years ago. The Algoman orogeny belongs to the Archean's closing interval.
Superior Province: A large Archean crustal province of the Canadian Shield, extending across central Canada and the north-central United States. Its late Archean belts contain extensive rocks affected by Algoman-age deformation.
Rae Province: An Archean to Paleoproterozoic crustal province in the western Canadian Shield, north of the Trans-Hudson Orogen. Its Archean basement provides a western Canadian setting for late Archean tectonic histories.
Continental collision: The convergence and joining of continental crustal blocks during tectonic plate movement. Collision is a leading process used to explain the mountain-building and crustal thickening.
Canadian Shield: A vast region of exposed Precambrian igneous and metamorphic rocks surrounding Hudson Bay. The event's principal geological record lies in rocks of this ancient craton.
Wabigoon subprovince: An Archean geological subprovince in northwestern Ontario, composed largely of volcanic and plutonic rocks. Its rocks preserve evidence of late Archean assembly and deformation.
North Caribou Terrane: An Archean crustal block in northwestern Ontario, within the western Superior Province. Its rocks preserve evidence of late Archean crustal assembly in the broader region.
Folding: The bending of originally planar rock layers under directed stress without breaking them apart. Folded Archean strata preserve deformation associated with the orogeny.
Craton: A stable, long-lived part of continental lithosphere, commonly composed of ancient crystalline basement and overlying cover. The orogeny affected crust that later became part of stable North American continental interior.