The study by the United States Geological Survey detected the linkage and speculates if the Calaveras and Hayward faults combine forces it could produce devastating a super-quake in the San Francisco area.

Projections forecast $100 billion dollars damage if such a ‘super-quake’ strikes.

To add to their forecast, scientist warn the land masses on both sides of the fault need to move about three meters to catch up to where they should be and could shift soon.   If the two fault lines release their geophysical tension at the same time, the result is expected to be a very powerful and destructive earthquake.