Where does the New Madrid fault line run?
The New Madrid Fault extends approximately 120 miles southward from the area of Charleston, Missouri, and Cairo, Illinois, through Mew Madrid and Caruthersville, following Interstate 55 to Blytheville, then to Marked Tree Arkansas.
What type of fault line is the New Madrid?
The New Madrid seismic zone of the central Mississippi River valley has been interpreted to be a right-lateral strike-slip fault zone with a left stepover restraining bend (Reelfoot reverse fault).
What caused the New Madrid earthquake 1811?
The main shock that occurred at 2:15 am on December 16, 1811, was a result of slippage along the Cottonwood Grove Fault in northeastern Arkansas. It was followed by at least three large aftershocks with magnitudes that ranged from 6.0 to 7.0 over the course of the next 48 hours.
When was the Great New Madrid earthquake?
December 16, 1811
At 2:15 a.m. on December 16, 1811, residents of the frontier town of New Madrid, in what is now Missouri, were jolted from their beds by a violent earthquake.
Which sides of faults tend to be more eroded?
The rock near the fault line might be more easily eroded than the adjacent rock, so it might form a fault-line valley where the upthrown side is topographically higher than the downthrown side.
Are the rock layers still continuous in strike slip fault?
No. In the presence of a reverse fault, the continuity of rocks layers is disrupted.
Where is the Madrid Fault?
The New Madrid Fault is located beneath the Mississippi River Valley in the Midwest United States. It is part of the North American tectonic plate and the major fault among four, located in this region. It is yet to be confirmed if these faults intersect or are unique to each other.
What is New Madrid Fault System?
The New Madrid fault system was responsible for the 1811–12 New Madrid earthquakes and has the potential to produce large earthquakes in the future.
What is the New Madrid seismic zone?
New Madrid Seismic Zone. The New Madrid Seismic Zone (/ˈmædrɪd/), 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.
What is the fault line in the Midwest?
The Wabash Valley Seismic Zone (also known as the Wabash Valley Fault System or Zone) is a tectonic region located in the Midwest of the United States, centered on the valley of the Lower Wabash River , along the state line between southeastern Illinois and southwestern Indiana.