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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 fault 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 ...
New Madrid seismic zone. The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line (or fault zone or fault system), 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.
These are among the most recent features of the Grand Canyon. The topmost layers over which the lava flowed, the Kaibab Limestone, was deposited in Early Permian time, around 290 million years ago. The Uinkaret volcanic field is an area of monogenetic volcanoes in northwestern Arizona, United States, located on the north rim of the Grand Canyon.
A magnitude 3.0 earthquake was recorded at 9:24 p.m. in Arizona on Saturday between Flagstaff and Winslow.
Sunset Crater Volcano National Monument. Sunset Crater is a cinder cone located north of Flagstaff in the U.S. state of Arizona. The crater is within the Sunset Crater Volcano National Monument. Sunset Crater is the youngest in a string of volcanoes (the San Francisco volcanic field) that is related to the nearby San Francisco Peaks.
ShakeMap is a product of the U.S. Geological Survey (USGS) to map the shaking of earthquakes. According to the USGS, "ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake ...
California is well known for seismic activity and requires large structures to be earthquake resistant to minimize loss of life and property. [29] Outside of devastating earthquakes, California experiences minor earthquakes on a regular basis. There have been about 100 significant earthquakes annually from 2010 to 2012. Past averages were 21 a ...
A two week stretch without an earthquake in South Carolina came to an end Wednesday, when more seismic activity was recorded in the Columbia area. A 1.6 magnitude earthquake was recorded in the ...