New Madrid seismic zone - Wikipedia
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.
The New Madrid Seismic Zone | U.S. Geological Survey - USGS.gov
In the New Madrid region, the earthquakes dramatically affected the landscape. They caused bank failures along the Mississippi River, landslides along Chickasaw Bluffs in Kentucky and Tennessee, and uplift and subsidence of large tracts of land in the Mississippi River floodplain.
The Great Midwest Earthquake of 1811 | Smithsonian
Geologists have long blamed the New Madrid earthquakes on the Reelfoot Rift, a 500-million-year-old area of weakness in the crust. But the newfound faults lie outside the rift.
Scientists may have solved mystery of giant Midwest earthquakes …
Sep 6, 2016 · The plate failed to split completely, but geologists think that the event left scars below the NMSZ: a buried rift zone, where the rocks are weak and fractured, over plutons—blobs of dense igneous rock—that themselves rose from an upwelling of unusually dense lower crust.
8.4 earthquake at New Madrid fault won't hit St. Louis soon - ksdk.com
Jul 25, 2024 · Missouri's New Madrid Seismic Zone is in the news after the National Guard held drills in downtown St. Louis about a potential magnitude 8.4 earthquake. Here's why.
Midwestern Fault Zones Are Still Alive | Science - AAAS
Jan 23, 2014 · The occasional quakes rattling the New Madrid Seismic Zone, a series of midwestern faults named for a small town in the Missouri Bootheel, aren't aftershocks of the massive quakes that rocked our fledgling nation more …
Complacency over New Madrid Fault earthquake risk an issue for Midwest
Mar 4, 2022 · Experts have warned for decades that a large swath of the central U.S. is at high risk for a devastating earthquake from the New Madrid Fault.
About the New Madrid Siesmic Zone | SEMA - Missouri
The New Madrid Seismic Zone (NMSZ) extends 120 miles south from Charleston, Missouri, following Interstate 55 to near Marked Tree, Arkansas. The NMSZ consists of a series of large, ancient faults that are buried beneath thick, soft sediments. These faults cross five state lines, the Mississippi River in three places and the Ohio River in two ...
Facts about the New Madrid Seismic Zone - Missouri
A magnitude 7.6 earthquake in the NMSZ is expected to cause major damage near the fault system in the Missouri Bootheel, northeast Arkansas and western Kentucky and Tennessee.
Wabash Valley seismic zone - Wikipedia
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 Indiana.