Where does the New Madrid fault line start and end?
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 fault line runs through Illinois?
New Madrid Seismic Zone
Illinois is flanked on its western and eastern borders by two active seismic zones: the New Madrid Seismic Zone and the Wabash Valley Seismic Zone. The New Madrid fault zone is very active. In 1811-1812 the area in southern Missouri was hit by an earthquake that registered 7.5 on the Richter scale.
What 5 states does the New Madrid fault line run through?
A map of earthquakes epicenters, however, reflects faulting at depth and shows that the earthquakes define several branches of the New Madrid seismic zone in northeastern Arkansas, southwestern Kentucky, southeastern Missouri, and northwestern Tennessee.
What areas would be affected by New Madrid earthquake?
Earthquakes that occur in the New Madrid Seismic Zone potentially threaten parts of eight American states: Illinois, Indiana, Missouri, Arkansas, Kentucky, Tennessee, Oklahoma, and Mississippi.
Why do some rocks fold while others are faulted?
When rocks deform in a ductile manner, instead of fracturing to form faults or joints, they may bend or fold, and the resulting structures are called folds. Because the strain rate is low and/or the temperature is high, rocks that we normally consider brittle can behave in a ductile manner resulting in such folds.
Can you have a normal fault in compressional regime?
Normal faulting in foreland basins may reveal high-amplitude flexure of the lower plate due to the advancing orogenic belt which generates extension in the forebulge and the distal parts of the foredeep (“flexural extension”). The resulting normal faults usually strike parallel to and dip towards the orogen.
What is a sudden vibration or trembling in the earth?
Earthquake. An earthquake is the result of a sudden release of energy in the Earth’s crust that creates vibrations or seismic waves that radiate up to the surface, causing the ground to shake. Earthquakes may last only a few seconds or may continue for up to several minutes.
Where is the New Madrid Fault Zone located?
About the New Madrid Seismic Zone The New Madrid Seismic Zone (NMSZ) is a 150-mile long fault zone spanning four states in the Midwestern United States (see Figure 1). The NMSZ lies within the central Mississippi Valley, extending from northeast Arkansas, through southeast Missouri, western Tennessee, and western Kentucky to southern Illinois.
What is the name of the fault line in South America?
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.
Where are the fault lines in the United States?
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 . The New Madrid fault system was responsible
What kind of sediment is in the New Madrid seismic zone?
The upper 30 meters of sediment within the embayment includes sand, silt, and clay deposited by the Mississippi, Ohio, St. Francis, and White Rivers and their tributaries over the past 60,000 years.
