Some argue that the collapse of the Jinsha civilisation was due to a great earthquake similar in nature to the 2008 Sichuan Earthquake. An analysis of the sediment layers and radiocarbons showed that the Chengdu Plains experienced large earthquakes over the past 5000 years. These occurred in 1000-year intervals, with the dates aligning with the disappearance of the Jinsha civilisation. In addition to the destruction of the people’s residents and buildings, the secondary effects of an earthquake include floods, diseases and landslides. A change in environment would have required the remaining people at Jinsha to relocate.