Slumgullion Earthflow (Slumgullion mud flow), Hinsdale County, Colorado, USAi
| Regional Level Types | |
|---|---|
| Slumgullion Earthflow (Slumgullion mud flow) | Landslide |
| Hinsdale County | County |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 59' 29'' North , 107° 15' 25'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Other/historical names associated with this locality:
Slumgullion Slide, Slumgullion Earthflow
The Slumgullion Earthflow in the San Juan Mountains in Hinsdale County, Colorado has been a National Natural Landmark since 1983. It is also a Colorado Natural Area and an Area of Critical Environmental Concern.
The earthflow, a slow moving landslide, crawled down the valley about 700 years ago creating the 4 miles (6.4 km) long and 2,000 feet (610 m) wide mass. The earthflow lies a few miles south east of Lake City. The landmark site covers 1,291 acres (522 ha) and is owned by the US Forest Service and the Bureau of Land Management. It is "a striking example of mass wasting (the movement of large masses of earth material)." The Lake Fork of the Gunnison River was dammed by the earthflow, creating Lake San Cristobal. A second earthflow has been moving continuously for about 300 years over older stable rock. It moves at a rate of about 7 meters (23 feet) per year.
The earthflow, a slow moving landslide, crawled down the valley about 700 years ago creating the 4 miles (6.4 km) long and 2,000 feet (610 m) wide mass. The earthflow lies a few miles south east of Lake City. The landmark site covers 1,291 acres (522 ha) and is owned by the US Forest Service and the Bureau of Land Management. It is "a striking example of mass wasting (the movement of large masses of earth material)." The Lake Fork of the Gunnison River was dammed by the earthflow, creating Lake San Cristobal. A second earthflow has been moving continuously for about 300 years over older stable rock. It moves at a rate of about 7 meters (23 feet) per year.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Alunite | 7.BC.10 | KAl3(SO4)2(OH)6 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| H | ⓘ Opal | SiO2 · nH2O |
| O | Oxygen | |
| O | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| O | ⓘ Opal | SiO2 · nH2O |
| Al | Aluminium | |
| Al | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| Si | Silicon | |
| Si | ⓘ Opal | SiO2 · nH2O |
| S | Sulfur | |
| S | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| K | Potassium | |
| K | ⓘ Alunite | KAl3(SO4)2(OH)6 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
- Southern Rocky MountainsOrogenic Belt
USA
- San Juan MountainsMountain Range
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Slumgullion Earthflow, Hinsdale County, Colorado, USA