Table 3 Summary of regional geotectonic zoning.

From: Research on seismic activity and seismic structural characteristics of the Shandong region

First-level unit

Second-level unit

North China Block Region (I)

West Shandong Block (I1)

Eastern Hebei-Bohai Block (I2)

Zuzhou-North Huaihe River Block (I3)

Jiaodong Peninsular-Liaodong Peninsula Block (I4)

Yangtze Block Region (II)

Northern Jiangsu-Jiaonan Block (II1)