Grand Teton National Park
Imagine the Teton Range and the valley in front of you like two parts of a giant hinge. The Earth's crust stretches and breaks into two blocks along the 40-mile-long Teton fault. Fractures generate large earthquakes along the fault. The western block hinges up and becomes the Teton Range.The eastern block tilts down and forms the valley. As the mountain rise, wind, water, and ice wear down the jagged skyline and erode away sandstone and limestone layers except for small outcrops. The landscape continues to change. Geoscientists predict future earthquakes up to a 7.5 magnitude.Old Rocks, New RangeThe Teton Range is composed of some of the oldest rocks on Earth, but the mountain range is one of the youngest in North America. The stretching-cracking-tilting that formed the Tetons began only nine million years ago. In contrast, geologic forces squeezed the Earth's crust and thrust up the Rockies over 70 million years ago.| HM Number | HM1NMJ |
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| Tags | |
| Placed By | National Park Service |
| Marker Condition | No reports yet |
| Date Added | Saturday, September 5th, 2015 at 9:02pm PDT -07:00 |
| UTM (WGS84 Datum) | 12T E 534238 N 4857861 |
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| Decimal Degrees | 43.87305000, -110.57385000 |
| Degrees and Decimal Minutes | N 43° 52.383', W 110° 34.431' |
| Degrees, Minutes and Seconds | 43° 52' 22.98" N, 110° 34' 25.86" W |
| Driving Directions | Google Maps |
| Area Code(s) | 307 |
| Which side of the road? | Marker is on the right when traveling South |
| Closest Postal Address | At or near US-191, Moran WY 83013, US |
| Alternative Maps | Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap |
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