The Teton Range
In geologic time, these mountains are the energetic teenagers of the Rocky Mountain chain, active, growing, yet sculpted by erosion.
The Rise of the Range
Nine million years ago, the earth's crust broke into two rectangular blocks along the Teton fault, a 40-mile-long zone of weakness. Through sporadic movements, the western block hinged skyward to become the Teton Range, while the eastern block tilted downward to form the valley called Jackson Hole. the valley sank four times more than the mountains rose. Displacement continues, and an earthquake-producing movement along the fault can occur at any time.
Shaping the Mountains
Erosional forces continually shape the rising mountains. Wind, water, ice, and glaciers, particularly of the last Ice Age, shaped the range into today's skyline. The sedimentary rock layers that covered the central peaks have been worn away, but mountain building continues, counteracting erosion.
Location. 43° 52.369′ N, 110° 34.422′ W. Marker is in Moran, Wyoming, in Teton County. Marker is on U.S. 191. Touch for map. Marker is in this post office area: Moran WY 83013, United States of America.
Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies
Categories. • Natural Features •
Credits. This page was last revised on June 16, 2016. This page originally submitted on August 20, 2011, by Bill Pfingsten of Bel Air, Maryland. This page has been viewed 393 times since then and 19 times this year. Photos: 1, 2, 3, 4. submitted on August 20, 2011, by Bill Pfingsten of Bel Air, Maryland.