A new report says that long dormant Oklahoma fault lines are being reactivated and could lead to a massive earthquake.

The study, which includes researchers from the U.S. Geological Survey, says Oklahoma now must be considered possible for “a high degree of potential earthquake hazards.”

‘The majority of the recent earthquakes in central Oklahoma define reactivated ancient faults at shallow depths in the crust’ of less than 3.7 miles (6 km), said the report for the American Geophysical Union.

The study did not involve any research regarding fracking and if it had any impact on the reawakening of the fault lines.

‘Any one of these fault zones that are producing magnitude 3 or 4 earthquakes could rupture into a larger earthquake. There are as many as 12 different fault zones that are capable of producing a large, 5 to 6 magnitude earthquake,’ Daniel McNamara of the USGS stated.

Building codes in Oklahoma are not strong enough for a high earthquake.  A major quake would result in mass destruction.