Huronian (or glaciation Makganyene glaciation) extended from 2400 Mya to 2100 Mya, during the Siderian and Rhyacian periods of the Paleoproterozoic era, following the Great Oxygenation Event (GOE), which oxidised the atmospheric methane (a greenhouse gas).
Name origin [ edit ]
This geological era was named due to evidence collected from the
Lake Huron region in North America where three separate horizons of glacial deposits are separated by non-glacial sediment.
Geological context [ edit ]
glaciation was one of the most severe and longest ice ages in geologic history, similar to the shorter proposed Snowball Earth ice ages that happened in the Cryogenian, a geologic period that occurred . 850 to 635 million years ago [1 ] [2 ] [3 ] [4 ]
The Huronian glaciation may have been caused by the
oxygen catastrophe, or by a 250 million year lull in volcanic activity which resulted in lower carbon dioxide levels and a reduced greenhouse effect, or by a combination of the two. There is little consensus on the exact cause of the event.
References [ edit ]
^ Lane, Nick (5 February 2010). "First breath: Earth's billion-year struggle for oxygen". New Scientist (2746). A snowball period, c2.4–c2.0 Gya, triggered by the Great Oxygenation Event 
^ Williams G.E.; Schmidt P.W. (1997). "Paleomagnetism of the Paleoproterozoic Gowganda and Lorrain formations, Ontario: low palaeolatitude for Huronian glaciation" (PDF). EPSL 153 (3): 157–169. Bibcode: 1997E&PSL.153..157W. doi: 10.1016/S0012-821X(97)00181-7.
^ Evans, D.A.; Beukes, N.J.; Kirschvink, J.L. (March 1997). "Low-latitude glaciation in the Palaeoproterozoic era". Nature 386 (6622): 262–6. Bibcode: 1997Natur.386..262E. doi: 10.1038/386262a0.
^ Kopp, Robert E.; Kirschvink, Joseph L.; Hilburn, Isaac A.; Nash, Cody Z. (2005). "The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis". Proc. Natl. Acad. Sci. U.S.A. 102 (32): 11131–6. Bibcode: 2005PNAS..10211131K. doi: 10.1073/pnas.0504878102. PMC 1183582. PMID 16061801.