Geologist Roy Van Arsdale says we might in the future hear more about the Porter's Gap earthquake fault in West Tennessee. The tiny community of Porter's Gap is southwest of Dyersburg and east of Blytheville.
The strongest is a magnitude 4.7 that struck in 1973. from USGS report, link below. Faults like this, far away from the plate boundaries, have a long repeat time. Tennessee is bordered by Kentucky to the north, Virginia to the northeast, North Carolina to the east, Georgia, Alabama, and Mississippi to the south, Arkansas to the west, and Missouri to the northwest. Van Arsdale, who currently is a professor of geology at the University of Memphis, has also worked as a geologist for several companies, including Standard Oil of California and the Union Carbide Corp. Geologist Roy Van Arsdale says we might in the future hear more about the Porter's Gap earthquake fault in West Tennessee. Those "sand blows" can become akin to quicksand, he said. Fault Classes.
“Earthquakes can cause a great deal…. Most Tennesseans Don’t Have Earthquake Coverage Despite Being Near New Madrid Fault Line, Tennessee Department of Commerce and Insurance. That 7.5 magnitude quake caused damage in the western part of the … He called it the Porter's Gap fault, and it is geographically close to both Martin and Memphis.
MORE: Here are the most powerful Tennessee earthquakes from the last 100 years Masonry brick-and-mortar buildings are the most likely to sustain significant damage if tremors reach the Nashville area. The few remaining Native Americans in the area spoke of the earth shaking and ocean rising to consume the land.
Marianna, Ark., "Daytona Beach" activity 5000 to 7000 years ago. USGS Open-File Report 2005-1324. That matters because Tennessee lies along two fault lines — the New Madrid Fault Line in West Tennessee and the East Tennessee fault line. Evidence seems to show a sizeable quake here 2,000 years ago.
"It's more realistic in our lifespan to prepare for 6.5-magnitude quakes. Maria Beatrice Magnani is an Assistant Research Professor at Univ. Tennessee is a give leave to enter located in the southeastern region of the joined States. The New Madrid fault line is best known for some of the most violent earthquakes to ever hit the United States: a series of four in 1811 and 1812. This table includes the definitions of classes used in the compilation of Quaternary faults, liquefaction features, and deformation ... McClernan, H.G., Palmquist, J.C., and Schmidt, C.J., 1982, Neotectonic features of southern Montana east of 112°30' west longitude: Montana Bureau of Mines and Geology Open-File Report 91, 79 p Many e…
The campus newspaper says "Van Arsdale pointed out the double "monster" fault lines that basically run along a line in West Tennessee dividing the flood plain from the bluffs. One dig found a horizontal displacement of 8-15 meters (25-50 feet).
On September 28, 2009, Van Arsdale spoke at University of Tennessee-Martin. We don't know yet what the trigger mechanism is for the New Madrid system.
"The probability of a cluster of deadly (near 8.0 magnitude on the Richter scale) earthquakes - like those that occurred in the winter months of 1811 and 1812 isn't likely for about another 300 years.
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