How was the Gros Ventre landslide formed?
How was the Gros Ventre landslide formed?
The Gros Ventre slide may have been started by heavy prolonged rainfall. Some 50 million cubic yards of sandstone, limestone, shale and rock, about one mile long, 2000 feet wide and several hundred feet deep in places, plunged down and formed a dam 225 feet high and half a mile wide across the Gros Ventre River.
What factors led to the massive landslide at Gros Ventre Wyoming?
A combination of three factors caused the rock slide: 1) heavy rains and rapidly melting snow saturated the Tensleep Sandstone causing the underlying shale of the Amsden Formation to lose its shear strength, 2) the Gros Ventre River cut through the sandstone creating an oversteepened slope, and 3) soil on top of the …
What impact did the slide have on the Gros Ventre River and what body of water formed as a result of the slide?
The Slide blocked the Gros Ventre River, and formed a five-mile long body of water known today as Lower Slide Lake.
How did Lower Slide Lake form?
The natural lake was created on June 23, 1925 when the Gros Ventre landslide dammed the Gros Ventre River. The lake was once much larger, however part of the rock dam failed less than two years later, on May 18, 1927, causing deadly flooding downstream.
What geologic factors contributed to the severity of the Gros Ventre landslide of 1925?
How did the underlying geology contribute to the Gros Ventre Landslide of 1925? Rains saturated the sandstone and clay that make up the slope.
Which of the following is a reason the Gros Ventre rockslide took place?
Which of the following is a reason the Gros Ventre rockslide took place? Because the river eroded material at the valley base, there was no support of the material upslope. The rockslide debris dammed up the river and formed a lake.
What factors led to the massive rockslide at Gros Ventre Wyoming quizlet?
What factors led to the massive rockslide at Gros Ventre, Wyoming? Tilted sandstone bed that had been cut through by the river could no longer maintain its position atop the saturated bed of clay. How is Lahar different from a debris flow that might occur in Southern California?
What happened in the 1925 Gros Ventre Slide in Wyoming?
On June 23, 1925, one of the largest fast-moving landslides in generations occurred near the town of Kelly, Wyoming. In just three minutes, huge amounts of rock and debris cascaded down the north slope of Sheep Mountain, changing the area forever.
Where was the Gros Ventre landslide?
How long is the hike to Phelps Lake?
Phelps Lake
| Roundtrip Length: | 4.7 Miles |
| Trailhead Elevation: | 6807 Feet |
| Total Elevation Gain: | 965 Feet |
| Avg. Elev Gain / Mile: | 411 Feet |
| Highest Elevation: | 7200 Feet |
What happened in the 1925 Gros Ventre Slide in Wyoming quizlet?
What happened in the 1925 Gros Ventre slide in Wyoming? Heavy rains saturated a shale layer causing the already oversteepened slope of rock to slide down and dam up a river.
During what season does Solifluction occur?
summer
When Does Solifluction Occur? Solifluction happens during the summer thaw when the water in the soil is trapped there by frozen permafrost beneath it.
How big was the Gros Ventre landslide in 1925?
The Gros Ventre landslide is seven miles (11 km) east of Jackson Hole valley and Grand Teton National Park . The landslide occurred on June 23, 1925, following melt from a heavy snowpack, several weeks of heavy rain, and earthquake tremors in the area. Approximately 50,000,000 cu yd (38,000,000 m 3;
Where is the Gros Ventre geological Site?
The Gros Ventre Geological Site is a large paved parking area directly below the famous Gros Ventre Landslide which formed Slide Lake, and is the direct access to the Gros Ventre Geological Trail #4073. It is located directly off the Gros Ventre Road out of the town of Kelly.
Where is the Gros Ventre slide in Wyoming?
Just seven miles outside of Kelly, Wyoming. Overview. The Gros Ventre Slide is a large geological scar marking the side of Sheep Mountain, seven miles east of Jackson Hole Valley. This impressive area has some truly unique geological features and a collage of colorful rocks vastly different from the granite of the Tetons.
What is the name of the landslide in Wyoming?
The Gros Ventre landslide (/ˌɡroʊ ˈvɑːnt/ groh-VAHNT) is in the Gros Ventre Wilderness of Bridger-Teton National Forest, Wyoming, United States.
https://www.youtube.com/watch?v=QESqilkBpLI
