The Quaternary Tan-Lu fault zone in the Bohai Bay consists of two main faults dipping steeply to the west.
The Tan-Lu fault zone was dominated by reverse dextral slip during the Holocene.
The Tan-Lu fault zone in the southern and central sections of the Bohai Bay was last active during the Holocene.
The ENE–WSW compression led to the Holocene faulting associated with many recent earthquakes in the Bohai Bay.