The Pongola glaciation is a glacial episode that occurred in the Mesoarchean, 2.9 Ga ago for about 150 Ma. It is the oldest known glaciation on the planet.
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The Pongolaglaciation is a glacial episode that occurred in the Mesoarchean, 2.9 Ga ago for about 150 Ma. It is the oldest known glaciation on the planet...
Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago. Within ice ages, there exist...
Pongola may refer to: Pongola, KwaZulu-Natal, a town in South Africa Pongola River, a river in South Africa Pongolaglaciation, a glaciation period 2900...
was quickly followed by the global Marinoan glaciation. There is controversy over whether these glaciations covered the entire planet, or if a band of...
the atmosphere. The most academically referred period of such global glaciation is believed to have occurred sometime before 650 mya during the Cryogenian...
play an integral role in the thermal budget of ancient Earth. The Pongolaglaciation occurred around 2.9 Ga, from which there is evidence of ice extending...
roughly 2400–2100 Ma. One of the best studied is the Sturtian-Varangian glaciation, around 850–635 Ma, which may have brought glacial conditions all the...
melt with changes in season, and it may explain the evidence of abundant glaciation in the Ediacaran. The rifting of the continents created new oceans and...
eukaryotes via symbiogenesis; several global glaciations, which produced the 300 million years-long Huronian glaciation (during the Siderian and Rhyacian periods...
the concentration of atmospheric methane, and triggered the Huronian glaciation from around 2.4 to 2.1 Ga ago. In this way, cyanobacteria may have killed...
Ocean. The glaciation of Gondwana resulted in a major drop in sea level, killing off all life that had established along its coast. Glaciation caused an...
hydrogen sulfide and atmospheric methane, and compounded by a global glaciation, devastated the microbial mats around the Earth's surface. The subsequent...
to volcanism, and anoxia, and not, as considered earlier, cooling and glaciation. However, this is at odds with numerous previous studies, which have indicated...
and Cryogenian glaciations), the Boring Billion period itself actually had very low oxygen levels and no geological evidence of glaciations. The oceans during...
must have been located near the equator. Thus, this glaciation, known as the Huronian glaciation, may have been global. Some scientists suggest this was...
oxygen and evolution occurs at the end of the last of the Snowball Earth glaciations, where complex multicellular life is first found in the fossil record...
found in mountainous areas, rift zones, and areas with ongoing or recent glaciation. Other lakes are found in endorheic basins or along the courses of mature...
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