Siderian

Siderian
Of a geologic period within the Paleoproterozoic era from about 2500 to 2300 million years ago.
2. noun
The Siderian period.

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  • Siderian — The Siderian (IPAEng|saɪˈdɪəriən, el. sideros, meaning iron ) is the first geologic period in the Paleoproterozoic Era and lasted from 2500 Ma to 2300 Ma (million years ago). Instead of being based on stratigraphy, these dates are defined… …   Wikipedia

  • Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… …   Wikipedia

  • Neoproterozoic — era 1000   542 million years ago Key events in the Neoproterozoic view • edit …   Wikipedia

  • Mesoproterozoic — era 1600   1000 million years ago Key events in the Mesoproterozoic view • edit …   Wikipedia

  • Cryogenian — Period 850–630 million years ago …   Wikipedia

  • Orosirian — The Orosirian (  /ˌɒrɵˈ …   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

  • Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies …   Wikipedia

  • Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago …   Wikipedia

  • Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago …   Wikipedia

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