1668 Shandong earthquake

A major earthquake occurred during the rule of the Qing dynasty in Shandong Province on July 25, 1668.

Its epicenter may have been located between Ju and Tancheng counties, northeast of the prefecture-level city of Linyi in southern Shandong.

The first recorded earthquake occurred northwest of Zhucheng in 70 BCE, estimated at Ms  7.0 or greater.

The most recent destructive earthquake occurred on 19 November 1829, measuring Ms  6.75 near Yidu and Linqu.

The fault extends 2,400 km (1,500 mi) from Wuxue near the Yangtze River bank, through the Bohai Sea, to Zhaoxing, Heilongjiang.

It has evolved multiple times during its history; from the late Triassic to middle Cretaceous, it was a sinistral strike-slip fault zone which produced offsets ranging from 200–740 km (120–460 mi).

[4] A paleoseismic study of the fault zone in 1987 suggest the same segment was the source of a similarly sized earthquake in 6280 BCE.

It also affected Jiangsu, Anhui, Zhejiang, Fujian, Jiangxi, Hubei, Henan, Hebei, Shanxi, Shaanxi, Liaoning, and Korea.

[10] Seismic intensity VIII was over 16,800 square kilometres (6,500 sq mi) corresponding to an elliptical-shaped area along the fault zone.

In Mashi, Wulugu, Yanjiagu, Shifengdo, Keluodo and Maqi, landslides occurred on the hills.

[10] In Tancheng, battlements, government buildings, homes, a watchtower, temples and storehouses were completely destroyed.

Many nearby cities walls fell, and some parts flooded by overflowing rivers and wells.