Churchillian orogeny
Churchillian orogeny A Proterozoic phase of mountain building that affected an area in what are now northern Saskatchewan and northern Manitoba, Canada. It was probably caused by the collision of a microcontinent (see MICROPLATE) within a subducting oceanic plate, moving northwards, with a fore-arc, and may have started about 1900 Ma ago and ended about 1850 Ma ago.
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ma non troppo , ma •aargh, Accra, afar, ah, aha, aide-mémoire, ajar, Alcazar, are, Armagh, armoire, Artois, au revoir, baa, bah, bar, barre, bazaar, beaux-arts, Beka… Iapetus Ocean , Iapetus Ocean (proto-Atlantic) The late Precambrian and early Palaeozoic ocean that lay between Baltica and Laurentia. The oceanic crust and upper ma… Ma Yuan , Ma Yüan
Ma Yüan
Ma Yüan (active ca. 1190-ca. 1229) was a Chinese painter. With Hsia Kuei, he was one of the creators of the Ma-Hsia school of landsca… -oma , -oma suffix repr. modL. -ōma — Gr. -ōma, as in rhízōma, sárkōma, tríkhōma, f. vbs. in -oūsthai, as rhizoūsthai take root, f. rhíza ROOT. (i) Used to… northern , north·ern / ˈnôr[voicedth]ərn/ • adj. 1. situated in the north, or directed toward or facing the north: the northern slopes | northern Europe. ∎ (of… Paleotethys , Palaeotethys There is confusion over the relationship between Tethys (or Neotethys) and Palaeotethys. Some authors refer to the existence of a late P…
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Churchillian orogeny