Hi Todd. The fault that caused the Northridge quake was and still is a blind thrust fault. You will not see it on any map because it never broke the surface. They know the approximate location by looking at the aftershocks. When it comes time to print new maps they may have a good enough idea as to where it’s at so they can place it on a map.

The fault is known as the Northridge fault. Take Care...Don in creepy town

• Northridge Fault