Mountain type granitic pluton dome Age of rock 7.605043 million years | Designated 1973 | |
 | ||
Elevation 2,132 to 4,950 feet (650 to 1,509 m) Location San Bernardino County, California, U.S. Similar Clark Mountain, Amboy Crater, Pisgah Crater, Cinder Cone, Coso Volcanic Field | ||
The Cima Dome & Volcanic Field National Natural Landmark, or Cinder Cones National Natural Landmark, includes the Cima Dome, Cima Volcanic Field, and Cima Volcanic Range, and is in the Mojave Desert within San Bernardino County, California, United States.
Contents
- Map of Cima Dome 26 Volcanic Field National Natural Landmark California 92364 USA
- Cima DomeEdit
- Cima Volcanic Field and RangeEdit
- References
Map of Cima Dome %26 Volcanic Field National Natural Landmark, California 92364, USA
The dome and volcanic field with cinder cones are located within the National Park Service Mojave National Preserve south of Interstate 15 and Baker, off Kelbaker Road towards Cima, and north of the Kelso Visitors Center and Interstate 40.
Cima DomeEdit
Cima Dome is a broad sloping upland dome, the erosional remnant of granite plutons that formed deep under the Earth's surface 180 - 80 million years ago when the Farallon Plate was being subducted beneath the North American Plate.
The Dome rises 1,500 feet (460 m) above the volcanic plain, 2,132 to 4,950 feet (650 to 1,509 m) high, and covers 70-square-mile (180 km2). Cima Dome is an extremely symmetric dome of this granitic formation type, and one of the most visible ones by being in open desert plains.
Cima Volcanic Field and RangeEdit
The Cima Volcanic Field and Cima Volcanic Range includes 40 volcanic cinder cone vents, and extensive basaltic lava flows in a volcanic field covering more than 58 sq mi (150 km2) of the Mojave Desert. It ranges from 2,132 to 4,950 feet (650 to 1,509 m) in elevation. These cinder cones range in size from 82 to 508 ft (25 to 155 m) in height above the volcanic plain and from 656 to 3,018 ft (200 to 920 m) in base diameters. Over 30 of these cinder cones and associated lava flows, are Pleistocene in age and are located in the southern portion of the volcanic field, with the rest from the Quaternary age.