Mesoarchaean facts for kids
The Mesoarchaean (Mesoarchean) is the third geological era in the Archaean eon. It began 3.2 billion years ago, and ended 2.8 billion years ago. Before the Mesoarchaean era was the Palaeoarchaean era. After the Mesoarchaean era was the Neoarchaean.
Fossils from Australia show that stromatolites have lived on Earth since the Mesoarchaean. The Pongola glaciation occurred 2.9 billion years ago. The first supercontinent Vaalbara broke up during this time, around 3.2 billion years ago. The second supercontinent Ur existed during this era, 3.1 billion years ago.
| Precambrian (4.567 gya – 541 mya) | |
|---|---|
| In the left column are Eons, bold are Eras, not bold are Periods. gya = billion years ago, mya = million years ago | |
| Hadean (4.567 gya – 4 gya) | Chaotian Zirconian |
| Archaean (4 gya – 2.5 gya) | Eoarchaean (4 gya – 3.6 gya)
Palaeoarchaean (3.6 gya – 3.2 gya) Mesoarchaean (3.2 gya – 2.8 gya) |
| Proterozoic (2.5 gya – 541 mya) | Palaeoproterozoic (2.5 gya – 1.6 gya) Siderian (2.5 gya – 2.3 gya) Rhyacian (2.3 gya – 2.05 gya) Orosirian (2.05 gya – 1.8 gya) Statherian (1.8 gya – 1.6 gya)
Mesoproterozoic (1.6 gya – 1 gya) Calymmian (1.6 gya – 1.4 gya) Ectasian (1.4 gya – 1.2 gya) Stenian (1.2 gya – 1 gya) Neoproterozoic (1 gya - 541 mya) Tonian (1 gya – 720 mya) Cryogenian (720 mya – 635 mya) Ediacaran (635 mya – 541 mya) |
See also
In Spanish: Era Mesoarcaica para niños
