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  1. Huronian glaciation

    The Huronian glaciation was a period where at least three ice ages occurred during the deposition of the Huronian Supergroup. Deposition of this largely sedimentary succession extended from approximately 2.5 to 2.2 billion years ago, during the Siderian and Rhyacian periods of the Paleoproterozoic era. Evidence for glaciation is mainly based on the recognition of diamictite, that is interpreted to be of glacial origin. Deposition of the Huronian succession is interpreted to have occurred within a rift basin that evolved into a largely marine passive margin setting. The glacial diamictite deposits within the Huronian are on par in thickness with Quaternary analogs. Wikipedia

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  2. en.wikipedia.org

    The Huronian glaciation (or Makganyene glaciation) [1] was a period where at least three ice ages occurred during the deposition of the Huronian Supergroup. Deposition of this largely sedimentary succession extended from approximately 2.5 to 2.2 billion years ago (), during the Siderian and Rhyacian periods of the Paleoproterozoic era. Evidence for glaciation is mainly based on the recognition ...
  3. opentextbc.ca

    The oldest known glacial period is the Huronian. Based on evidence of glacial deposits from the area around Lake Huron in Ontario and elsewhere, it is evident that the Huronian Glaciation lasted from approximately 2,400 to 2,100 Ma. Because rocks of that age are rare, we don't know much about the intensity or global extent of this glaciation.
    Author:Steven EarlePublished:2015
  4. link.springer.com

    The Huronian glaciation is the oldest series of protracted climatic refrigeration events that extensively affected Earth. It occurred between 2.45 and 2.22 Ga in association with the rise of atmospheric oxygen. Three glaciations of that series, the classical Huronian ice ages, are bracketed in time between ~2.45 and 2.32 Ga; the fourth event ...
  5. simple.wikipedia.org

    The Huronian glaciation (or Makganyene glaciation) lasted from 2400 million years ago (mya) to 2100 mya, during the Paleoproterozoic era.. The glaciation was named after evidence recovered from the Lake Huron region in North America.There, three separate horizons of glacial deposits are separated by non-glacial sediment.. This was one of the most severe and longest ice ages in geologic history.
  6. sciencedirect.com

    The causes and timing of the Huronian Glaciation Event (abbreviated to HGE hereafter), as well as the global extent of ice cover are still controversial (Young, 1991; Evans et al., 1997; Evans, 2003; Kopp et al., 2005).It remains possible that the glaciation was diachronous in different areas, rather than a simultaneous and catastrophic event as implicit within the Snowball Earth model ...
  7. en.wikipedia.org

    The Huronian Supergroup is a Proterozoic assemblage of geologic groups of the Superior Craton of the Canadian Shield in Ontario and Quebec. ... Hough Lake Group, Quirke Lake Group, and the Cobalt Group (from oldest to youngest). Major glacial periods, Huronian glaciation, occurred at the beginning of the Hough Lake, Quirke Lake and Cobalt. [3] Age
  8. The final glaciation in the Huronian, the Gowganda, is overlain by several kilometers of sediments in the Lorrain, Gordon Lake, and Bar River formations (Fms.). The entire sequence is penetrated by the 2.22 Ga Nipissing diabase ; the Gowganda Fm. is therefore significantly older than 2.22 Ga.
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