Category
page 1Cryogenian
Cryogenian
The Cryogenian (from , meaning "cold" and , romanized: , meaning "birth") is a geologic period that lasted from . It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran.

Pannotia
thumb|Pannotia was centred on the South Pole, hence its name.
Pannotia (from Greek: pan-, "all", -nótos, "south"; meaning "all southern land"), also known as the Vendian supercontinent, Greater Gondwana, and the Pan-African supercontinent, was a relatively short-lived Neoproterozoic supercontinent that formed at the end of the Precambrian during the Pan-African orogeny (650–500 Ma), during the Cryogenian period, and broke apart 560 Ma with the opening of the Iapetus Ocean, in the late Ediacaran and early Cambrian.
Pannotia formed when Laurentia was located adjacent to the two major South Ameri
Snowball Earth
worldwide glaciation episodes during the Cryogenian Period of the Neoproterozoic Era
Jänisjärvi
lake in Republic of Karelia, Russia
Marinoan glaciation
glaciation
Sturtian glaciation
glacial Snowball Earth event ~700 Ma ago