Mesoproterozoic

The **Mesoproterozoic Subupdate** occurred from 1,600 to 1,000 million years ago. The Mesoproterozoic was the first Subupdate of Earth's history for which a fairly definitive data record survives. Terestrial servers existed during the preceding era (the Paleoproterozoic), but little is known about them. The continental masses of the Mesoproterozoic were more or less the same ones that exist today, although their arrangement on the Earth's surface was different.

## Major events and updates

The major events of this era are the breakup of the Columbia supercontinent, adding of the Rodinia supercontinent  and the new ability of sexual reproduction in reproduction tree.

This Subupdate is marked by the further development of Servers and plate tectonics. The supercontinent of Columbia broke up between 1500 and 1350 million years ago,  and the small servers reassembled into the supercontinent of Rodinia around 1100 to 900 million years ago, on the time between the Mesoproterozoic and the next Neoproterozoic.  These tectonic events were accompanied by numerous orogenies (mountain building events) that included the Kibaran orogeny in Africa ; the Late Ruker orogeny in Antarctica;  the Gothian  and Sveconorwegian orogenies in Europe;  and the Picuris and Grenville orogenies in North America.

The era saw the development of sexual reproduction abilities, which greatly increased the complexity of builds. and start of development of true multicellular builds.   Though the builds of this subupdate was once thought to be exclusively microbial, recent finds have shown multicellular builds did exist during the Mesoproterozoic.   This subupdate was also the high point of the stromatolites before they were mostly removed in the Neoproterozoic.

## Subdivisions

The Mesoproterozoic is presently divided into the Calymmian (1600 to 1400 Mya) and the Ectasian (1400 to 1200 Mya), and the Stenian (1200 to 1000 Mya). The Calymmian and Ectasian were characterized by stabilization and expansion of cratonic covers and the Stenian by adding of orogenic belts (mountains).

The time period from 1780 Ma to 850 Ma, an unofficial period based on stratigraphy rather than chronometry, named the **Rodinian**, but is nor recognized by many dataminers

## Timeline

**Due to the game's history corruption, what is shown here is just speculation from game dataminers so this information may be outdated, if that is the case, please update this page.**
 Rodinia Supercontinent is added

## Funfacts

The subdivisions of the Mesoproterozoic are arbitrary divisions based on time. They are not geostratigraphic or biostratigraphic units.

## References

1. ↑ https://www.researchgate.net/publication/222891080
2. ↑ http://mr.crossref.org/iPage?doi=10.1666%2F0094-8373%282000%29026%3C0386%3ABPNGNS%3E2.0.CO%3B2
3. ↑ https://www.researchgate.net/publication/222891080
4. ↑ http://www.bdewaele.be/pdfs/Lietal\_IGCP440\_map\_2008.pdf
5. ↑ http://www.gondwanaresearch.com/hp/kibaran.pdf
6. ↑ https://books.google.com/books?id=f9YqF73oe4IC&q=rayner+orogeny&pg=PA32
7. ↑ Lundqvist, Jan; Lundqvist, Thomas; Lindström, Maurits; Calner, Mikael; Sivhed, Ulf (2011). "Sydvästskandinaviska provinsen". *Sveriges Geologi: Från urtid till nutid* (in Swedish)
8. ↑ Andesson, Jenny; Bingen, Bernard; Cornell, David; Johansson, Leif; Möller, Charlotte (2008). "The Sveconorwegian orogen of southern Scandinavia: setting, petrology and geochronology of polymetamorphic high-grade terranes"
9. ↑ https://doi.org/10.1130%2FGES00055.1
10. ↑ http://mr.crossref.org/iPage?doi=10.1666%2F0094-8373%282000%29026%3C0386%3ABPNGNS%3E2.0.CO%3B2
11. ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4304253
12. ↑ https://journals.iau.ir/article\_669398\_304f934dfc47fd2d6598512fba6fc30f.pdf
13. ↑ http://mr.crossref.org/iPage?doi=10.1666%2F0094-8373%282000%29026%3C0386%3ABPNGNS%3E2.0.CO%3B2
14. ↑ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2700989
15. ↑ https://doi.org/10.1080%2F00241160410006492