# 4.2 kiloyear event

> severe climatic event; defines the beginning of the Meghalayan age; started in ca. 2200 BCE; lasted the entire 22nd century BCE; related to the collapses of the Old Kingdom in Egypt, Akkadian Empire, Liangzhu culture, and Indus Valley Civilization

**Wikidata**: [Q1291515](https://www.wikidata.org/wiki/Q1291515)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/4.2-kiloyear_event)  
**Source**: https://4ort.xyz/entity/4-2-kiloyear-event


## References

1. [Source](http://stratigraphy.org/ICSchart/ChronostratChart2018-08.pdf)
2. Freebase Data Dumps. 2013