Cheyenne, Wyo. • Scientists have completed the most detailed map yet of one of North America’s most spectacular geologic faults with the hope of providing a better understanding of the earthquake risk at a popular vacation destination.
Upward slippage of the fault’s western edge has pushed the mountains to their present height of some 7,000 feet above Jackson Hole in Grand Teton National Park.
The fault ranks among the fastest moving in the Rocky Mountain region. Scientists think it could produce an earthquake as powerful as magnitude 7.5, which would cause serious damage.