Needle Rock Natural Area

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Needle Rock
Needle Rock Natural Area.JPG
Needle Rock in 2016.
Highest point
Elevation Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). [1][2]
Coordinates Lua error in package.lua at line 80: module 'strict' not found. [2]
Geography
Needle Rock is located in Colorado
Needle Rock
Needle Rock
Location Delta County, Colorado, U.S.[2]
Parent range West Elk Mountains
Topo map USGS 7.5' topographic map
Crawford, Colorado[2]
Geology
Age of rock c.a. 28 Ma
Mountain type Composite volcano
Climbing
Easiest route rock

Needle Rock is an intrusive of rhyodacite volcanic plug[3] located in the Needle Rock Natural Area, 3.5 miles (5.6 km) east-northeast (bearing 68°) of the Town of Crawford in Delta County, Colorado, United States. It stands 800 feet (240 m) tall above the floor of the Smith Fork of the Gunnison River valley. It originated as the throat of a large volcano about 28 million years ago in the Miocene geological epoch, when molten rock intruded between existing sedimentary rocks.[4] The plug may represent the eroded conduit of a laccolith.[3]

See also

References

  1. ↑ The elevation of Needle Rock includes an adjustment of +1.473 m (+4.83 ft) from NGVD 29 to NAVD 88.
  2. ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.

External links


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