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Magnetic potential map of the Reelfoot Rift. The New Madrid Seismic Zone (NMSZ), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.
The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. [ 1 ] The rift extends from central Colorado in the north to the state of Chihuahua, Mexico, in the south. [ 2 ] The rift zone consists of four basins that have an average width ...
Valles Caldera National Preserve. Valles Caldera (or Jemez Caldera) is a 13.7-mile (22.0 km) wide volcanic caldera in the Jemez Mountains of northern New Mexico. [ 1 ] Hot springs, streams, fumaroles, natural gas seeps, and volcanic domes dot the caldera landscape. [ 4 ]
When the location of these offsets were plotted on a map, he noted that they made a near perfect line on top of the fault he previously discovered. He concluded that the fault must have been the origin of the earthquake. This line ran through San Andreas Lake, a sag pond. The lake was created from an extensional step over in the fault, which ...
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley Seismic Zone (also known as the Wabash Valley Fault System or Zone) is a tectonic region located in the Midwestern United States, centered on the valley of the Lower Wabash River, along the state line between southeastern Illinois and southwestern Indiana.
The Organ Mountains are near the southern end of a long line of mountains on the east side of the Rio Grande's rift valley.The range is nearly contiguous with the San Andres Mountains to the north and the Franklin Mountains to the south, but is very different geologically: whereas the San Andres and Franklin Mountains are both formed from west-dipping fault blocks of mostly sedimentary strata ...
Shiprock (Navajo: Tsé Bitʼaʼí, "rock with wings" or "winged rock" [ 4 ]) is a monadnock rising nearly 1,583 feet (482 m) above the high-desert plain of the Navajo Nation in San Juan County, New Mexico, United States. Its peak elevation is 7,177 feet (2,188 m) above sea level. It is 10.75 miles (17.30 km) southwest of the town of Shiprock ...
The Sandia Mountains are the most visited range in New Mexico. Numerous hiking trails exist on both sides of the range, such as the popular La Luz Trail and Crest Trail. Much of the west side of the range is included in the Sandia Mountain Wilderness; the trails on that side are steeper, and water is very scarce.