When the mine reached a thrust fault which would have required enormous efforts to overcome, the decision was made to cease operations.
It is a thrust fault, meaning the sides of the fault push toward each other.
Known as a thrust fault, it spans about 100 square miles underground.
The difference between a thrust fault and a reverse fault is in their influence.
Although thrust faults do not break the surface, they leave disturbances that tell a story.
There are numerous thrust faults that help create a chaotic mess.
The conundrum was explained by the action of a thrust fault - this being the first to be discovered anywhere in the world.
Like the earthquake today, it was centered about nine miles beneath the surface and occurred on a thrust fault.
This was the first thrust fault to be discovered.
Largely located within and around the park's thrust faults.