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Paleoproterozoic — The Paleoproterozoic (pronEng|ˌpeɪlɪoʊˌproʊtərəˈzoʊɪk, also spelled Palaeoproterozoic) is the first of the three sub divisions (eras) of the Proterozoic occurring between Ma|2500 |1600 . This is when the continents first stabilized. This is also… … Wikipedia
Trans-Hudson orogeny — [ North American craton, also called Laurentia.] [ Wyoming, Superior and Hearne cratons] The Trans Hudson orogeny, Trans Hudsonian orogeny, Trans Hudson orogen (THO), or Trans Hudson Orogen Transect (THOT), (also referred to as the Trans… … Wikipedia
Snowball Earth — The Snowball Earth hypothesis as it was originally proposedcite book author = Kirschvink, J.L. year = 1992 chapter = Late Proterozoic low latitude global glaciation: The snowball Earth title = The Proterozoic Biosphere: A Multidisciplinary Study… … Wikipedia
Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… … Wikipedia
Rae craton — Ungava PeninsulaThe Ungava Peninsula, situated on the northeast portion of the Canadian Shield, is where the Rae Province connects with the Superior Province. The area is composed of Archean rocks (ca. 2.7 2.9 Ga) from the Douglas Harbour Domain… … Wikipedia
Wyoming craton — [ North American craton, also called Laurentia.] The Wyoming craton is located in the west central United States more specifically, in Montana, Wyoming, and parts of northern Utah. Also called the Wyoming province, it is the initial core of the… … Wikipedia
Mesoproterozoic — era 1600 1000 million years ago Key events in the Mesoproterozoic view • edit … Wikipedia
Huronian glaciation — The Huronian glaciation (or Makganyene glaciation) extended from 2400 Mya to 2100 Mya, during the Siderian and Rhyacian periods of the Paleoproterozoic era, triggered by the oxygen catastrophe, which oxidised the atmospheric methane (a greenhouse … Wikipedia
Kaapvaal craton — The Kaapvaal craton (Limpopo province of South Africa), along with the Pilbara craton of Western Australia, are the only remaining areas of pristine 3.6 2.5 Ga crust on Earth. Similarities of rock records from both these cratons, especially of… … Wikipedia
Precambrian — For the album by German band The Ocean, see Precambrian (album). Precambrian Period 4567.17–542 million years ago … Wikipedia
