|Elevation||6,707 ft (2,044 m) NAVD 88|
|Prominence||1,333 ft (406 m)|
|Nye County, Nevada, U.S.|
|Topo map||USGS Topopah Spring|
|Type||Caldera, cinder cones|
|Last eruption||80,000 years ago|
Yucca Mountain is a mountain in Nevada, near its border with California, approximately 100 miles (160 km) northwest of Las Vegas. Located in the Great Basin, Yucca Mountain is east of the Amargosa Desert, south of the Nevada Test and Training Range and in the Nevada National Security Site. It is the site of the Yucca Mountain nuclear waste repository, which is currently identified by Congressional law as the nation's spent nuclear waste storage facility. However, while licensure of the site through the Nuclear Regulatory Commission is ongoing, political maneuvering led to the site being de-funded in 2010.
The formation that makes up Yucca Mountain was created by several large eruptions from a caldera volcano and is composed of alternating layers of ignimbrite (welded tuff), non-welded tuff, and semi-welded tuff. The volcanic units have been tilted along fault lines, thus forming the current ridge line called Yucca Mountain. In addition to these faults, Yucca Mountain is criss-crossed by fractures, many of which formed when the volcanic units cooled.
A series of large explosive volcanic eruptions occurred to the north of Yucca Mountain millions of years ago, producing dense clouds of volcanic ash and rock fragments which melted or compressed together to create layers of rock called tuff, forming the mountains and hills of the region. The volcanic eruptions that produced Yucca Mountain ended about 12 million years ago. This explosive volcanism produced almost all (more than 99 percent) of the volcanic material in the Yucca Mountain region.
Several million years ago, a different type of eruption began in the area. These eruptions were smaller and much less explosive. These small eruptions were marked by lava and cinders seeping and sputtering from cones or fissures. The last such small eruption occurred about 80,000 years ago. The remaining volcanic material (less than 1 percent) in the Yucca Mountain region is a result of these smaller eruptions. Yucca Mountain borders a region known as Crater Flat containing several small cones.
Yucca Mountain and surrounding lands were central in the lives of the Western Shoshone and Southern Paiute peoples, who shared them for religious ceremonies, resource uses, and social events; Yucca Mountain continues to be considered sacred by the Shoshone people living today.
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|Wikimedia Commons has media related to Yucca Mountain.|
- "Yucca Mountain". Geographic Names Information System, U.S. Geological Survey. Retrieved 27 Aug 1980.
- Potter, Christopher J.; Dickerson, Robert P.; Sweetkind, Donald S.; Drake, Ronald M. II; Taylor, Emily M.; Fridrich, Christopher J.; San, Carma A. Juan; Day, Warren C. (2002). Geologic map of the Yucca Mountain region, Nye County, Nevada: U.S. Geological Survey Geologic Investigations Series I-2755. Denver, Colorado: U.S. Geological Survey.
- "Google Maps satellite imagery". Retrieved 2011-05-20.
- "Yucca Mountain". Sacred Land Film Project. Retrieved 2011-05-20.
- "A Western Shoshone Perspective on Yucca Mountain". Native American Netroots. Retrieved 2011-05-20.
- "Audiovisual Gallery: Yucca Mountain". United States Department of Energy. Archived from the original on 2009-05-14. Retrieved 2011-05-21.
- "Yucca Mountain Standards". Radiation Protection. United States Environmental Protection Agency. Retrieved 2011-05-20.
- "Real time earthquake map for California and Nevada". U.S. Geological Survey. Retrieved 2011-05-21.
- Smith, E.I.; D.L. Keenan (30 August 2005). "Yucca Mountain Could Face Greater Volcanic Threat". Eos, Transactions of the American Geophysical Union 86 (35): 317, 321. doi:10.1029/2005eo350001. Retrieved 2011-05-20.
- "Yucca Mountain: Nuclear Waste in Nevada" (news archive). Las Vegas Review-Journal. Retrieved 2011-05-20.
- "Yucca Mountain – Current Issues & What to Do". HOME: Healing Ourselves & Mother Earth. Retrieved 2011-05-20.