Huronian glaciation
Severe glaciation during the Paleoproterozoic era
Huronian glaciation
The Huronian glaciation (or Makganyene glaciation) refers to a series of three ancient glacial periods approximately 2.4 to 2.1 billion years ago, during the Siderian and Rhyacian periods of the Paleoproterozoic era. It is named after the Huronian Supergroup, one of several widespread stratigraphic sequences with similar ages containing diamictites, rocks interpreted as evidence of glaciation. The Huronian glaciation broadly coincides with the Great Oxidation Event, with changes in atmospheric composition and a loss of greenhouse gases likely contributing to the cooler global climate. The Huronian glaciation is one of the earliest glaciations known, only the Pongola glaciation predates it.
Read on Wikipedia · Image Oleg Kuznetsov - 3depix - http://3depix.com/, CC BY-SA 4.0
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