Originally Posted:
The fault lines on the map are clear and strikingly large. They slant north to south across Dallas, Tarrant and neighboring counties.
Some have nicknames. One is the Big D Fault, a thick, red gash at least 14 miles long that cuts below Oak Cliff, Love Field and the Medical District. To the west is the Airport Fault, which runs beneath Dallas/Fort Worth International Airport.
Developed by a unit of the energy giant ExxonMobil Corp., the map provides new information about the existence of underground features that could be contributing to the earthquakes that have been jolting North Texas for the last several years. READ MORE