When did these ice ages happen?

Answer 1

• The Huronian Ice age was somewhere between 2.1 and 2.4 billion years ago
• The Cryogenian Ice Age was about 850 to 630 million years ago, possibly the worst of all. It covered the earth down to the equator in ice, making Earth a giant snowball.
• The Andean-Saharan Ice age was a minor freeze around 460 to 430 million years ago.
• The next is the Karoo Ice Age 360 to 260 million years ago. It was most likely caused from the high levels of vegetation which reduced CO2 and increased oxygen. This wuld have led to an ice age.
• The ice age we're in now is the Pliocene-Quaternary glaciation which started about 2.58 million years ago. Since then, the world has seen cycles of glaciation with ice sheets advancing and retreating on 40,000 and 100,000 year glacial periods. Earth is currently in an interglacial, the last glacial period ending approximately 10,000 years ago.

Answer 2

The most recent ice age, known as the Last Glacial Maximum, occurred around 20,000 years ago. Prior to that, there were several ice ages throughout Earth's history, the most significant being the Pleistocene Ice Age which began around 2.6 million years ago.