Moran in Teton County, Wyoming — The American West (Mountains)
Grand Teton National Park
Looking west toward Mount St. John, notice the steep slope or fault scarp near the base of the peak. This steep slope formed as several massive earthquakes broke the ground by more than 75 feet since the ice-aged glaciers last retreated 14,000 years ago. The Teton fault began moving roughly nine million years ago generating earthquakes that shook the landscape.
Each earthquake, up to a magnitude 7.5, lifted the mountain block one part for every three to four parts that the valley block dropped building the range one step at a time. Future earthquakes will continue to shape this landscape but the geoscientists cannot predict when this will happen.
An earthquake occurs when two blocks of the Earth’s crust slip past one another along a crack called a fault. During larger earthquakes, the fault breaks the Earth’s surface forming a vertical escarpment or scarp providing lasting evidence that an earthquake occurred. With time, erosion degrades the scarp leaving behind a more gentle slope.
Erected by National Park Service.
Location. 43° 47.635′ N, 110° 41.796′ W. Marker is in Moran, Wyoming, in Teton County. Marker is on Teton Park Road, on the right when traveling south. Click for map. Marker
Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies. The Cathedral Group (approx. 0.9 miles away); a different marker also named The Cathedral Group (approx. 0.9 miles away); Cascade Canyon (approx. 1.6 miles away); Fault Scarp (approx. 1.9 miles away); Jenny Lake (approx. 2.1 miles away); Mount Moran (approx. 2.8 miles away); The Park’s First Visitor Area (approx. 3.2 miles away); The Crandall Studio (approx. 3.2 miles away). Click for a list of all markers in Moran.
More about this marker. A photograph of Mount Moran showing the Teton Fault Scarp appears on the left side of the marker. An illustration at the bottom left of the marker indicates the position of the Teton Fault in relation to Grand Teton, Mount St. John and Mount Moran.
Categories. • Natural Features •
Credits. This page originally submitted on , by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 135 times since then and 51 times this year. Photos: 1, 2, 3. submitted on , by Bill Coughlin of North Arlington, New Jersey. This page was last revised on June 16, 2016.