1668 Shandong earthquake

The earthquake occurred halfway between Beijing and Shanghai, where seismic activity is infrequent. There had not been any major earthquakes in the area for over 150 years. ==Earthquake==

The earthquake rupture occurred along the -long Yishu Fault, a segment of the Tan-Lu Fault Zone. The Tan-Lu Fault Zone formed during the Mesozoic. Its slip rate has been estimated at less than per year. During the earthquake, the Yishu Fault produced an average offset of . The slip sense was mainly dextral strike-slip with a small thrust component. Seismic inversion suggest a rupture area on a near-vertical, north–south striking fault. Another destructive earthquake in 1969 was also produced along the Tan-Lu Fault Zone. == Impact ==

The earthquake was felt in 379 counties, 29 of which experienced catastrophic damage. It also affected Jiangsu, Anhui, Zhejiang, Fujian, Jiangxi, Hubei, Henan, Hebei, Shanxi, Shaanxi, Liaoning, and Korea. Seismic intensity VIII was over corresponding to an elliptical-shaped area along the fault zone. In Ju County alone, more than 20,000 people were killed. Residential and official homes were destroyed. Schools, temples, warehouses and the city walls toppled. In Mashi, Wulugu, Yanjiagu, Shifengdo, Keluodo and Maqi, landslides occurred on the hills. Widespread land subsidence and collapse occurred. Fissures up to wide and hundreds of meters long were observed. One fissure measured from Guanzhuang to Gehu along a river cliff. It ejected dust, sand and water. At three wells, water was ejected into the air. In Linyi, no homes, city walls and temples were left intact. There were over 6,900 reported fatalities. Black water was said to emerge from fissures. Water erupted from wells and formed a pool measuring wide. Many nearby cities walls fell, and some parts flooded by overflowing rivers and wells. Fissures caused water and sand to erupt, burying homes. Many livestock also died. Heavy damage occurred in Ganyu. ==Tsunami==

Historical records also documented a probable tsunami in the region. It was reported that coastal cities were flooded and rivers overflowed. ==Response==

The Kangxi Emperor ordered his ministry to handle the relief efforts. In 40 prefectures and counties, tax fees were waived. Over 227,300 taels of silver were issued. ==See also==