Click here to sign in with Find local businesses, view maps and get driving directions in Google Maps. Three of these maps display the compiled fault data for the individual seismic zones: the Central Virginia Seismic Zone (CVSZ), Giles County Seismic Zone (GCSZ), Eastern Tennessee Seismic Zone (ETSZ). Text is available under the CC BY-SA 4.0 license, excluding photos, directions and the map. The ETSZ is located far from edge of the North American continent and represents a mid-continent or intraplate earthquake zone. The ETSZ is one of the most active earthquake zones in the eastern United States. Cox said it might be possible that these large earthquakes were only active during the late Pleistocene, when seismic stresses in the crust changed with the advance and retreat of massive ice sheets. part may be reproduced without the written permission. Post-ice age sediments, which might tell us more about the current potential for large earthquakes in the region, are mostly underwater as a result of Tennessee Valley Authority projects, Cox added. Are you certain this article is inappropriate? The Eastern Tennessee Seismic Zone (ETSZ), a zone of small seismic faults stretching from northeastern Alabama to southwestern Virginia, may have generated earthquakes of … Tiger Zone - Student Events; Campus Events; Media Room: News & Magazines; ... Seismic Information Recent Earthquake Maps. You can unsubscribe at any time and we'll never share your details to third parties. GEOLOGY | Volume 44 | Number 1 | www.gsapubs.org 39 Grenville basement structure associated with the Eastern Tennessee seismic zone, southeastern USA Christine A. Powell1 and William A. Thomas2 1Center for Earthquake Research and Information, The University of Memphis, Memphis, Tennessee 38152, USA 2Geological Survey of Alabama, Tuscaloosa, Alabama 35486, USA ABSTRACT The Eastern Tennessee … Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles. The ETSZ is the second-most active natural seismic zone in the … Go back to see more maps of Tennessee  U.S. Maps. 1) and TVA Dam Safety study (Ref. Map of East Tennessee Click to see large. The Eastern Tennessee seismic zone extends more than 300 km from as far north as southeastern Kentucky southward into Ala-bama, southeastern United States. Based on the 1990 USDA Hardiness Zone Map, this interactive version covers the state of Tennessee which ranges from USDA Zone 6a to USDA Zone … The ETSZ is one of the most active earthquake zones in the eastern United States. In historic times, the ETSZ has not produced earthquakes larger than magnitude 4.8. Thanks to Mapbox for providing amazing maps. This map is one of a series of seismicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. Apart from any fair dealing for the purpose of private study or research, no WHEBN0017181125 Medical research advances and health news, The latest engineering, electronics and technology advances, The most comprehensive sci-tech news coverage on the web. The Eastern Tennessee Seismic Zone. States for the period 1965 to 1997. You can be assured our editors closely monitor every feedback sent and will take appropriate actions. See this page's contributions. The Eastern Tennessee Seismic Zone (ETSZ), a zone of small seismic faults stretching from northeastern Alabama to southwestern Virginia, may have generated earthquakes of magnitude 6 or greater within the last 25,000 years, according to a study published June 27 in the Bulletin of the Seismological Society of America. We do not guarantee individual replies due to extremely high volume of correspondence. Using a technique called optically stimulated luminescence to assign dates to the minerals contained in sediments surrounding these seismic features, Cox and colleagues narrowed the possible ages of these earthquakes to between 25,000 and 15,000 years ago. The Eastern Tennessee Seismic Zone is shown in green, the Giles County seismic zone is shown in blue and the Central Virginia seismic zone is shown in pink. We propose that a large-scale shear zone, which originated as a continental transform fault dur-ing the Grenville orogeny and assembly of supercontinent Rodinia, Eastern Tennessee Seismic Zone Last updated January 28, 2020. The researchers are collecting data now indicating that these features cross valley floors, which "strongly corroborate the results of this paper, that these features are related to earthquakes," said Cox. Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002. Notes on seismic hazard sensitivity studies for Eastern Tennessee Seismic Zone 3 March 2008—R. Recent Central and Eastern U.S. Earthquake Map; ENS ... Eastern Tennessee; AG Network; Felt Reports; Shakemaps; Earthworm Seismic Processing Software Download; Many e… Thank you for taking your time to send in your valued opinion to Science X editors. [3], The source of seismic activity in the ETSZ is not known. google_ad_client = "pub-2707004110972434"; Use the links below to find out more about these zones and earthquakes that affect the central and eastern … Alabama sits on the edge of the Eastern Tennessee seismic zone, which extends from south west Virginia to north east Alabama, is one of the most active earthquake areas in the Southeast. [1] The U.S. Geological Survey estimates that earthquakes as large as magnitude 7.5 are possible in the ETSZ. 300 km long; 50 km wide; 100 recorded earthquakes/year Largest recorded earthquakes: 4.6 Maryville,TN 1973 4.6 Fort Payne, AL 2003 In the United States, a large earthquake tore down building in the late 1800 in Charleston, SC; the Eastern Tennessee Seismic Zone sees atleast a thousand small earthquakes each year; and the largest earthquake in the continental U.S. occurred along the New Madrid fault near St. Louis, Missouri in … google_ad_client = "ca-pub-2707004110972434"; The ETSZ region is home to several nuclear power plants and hydroelectric dams related to the Tennessee Valley Authority, along with major population centers such as Knoxville and Chattanooga, making it important to determine whether the region is capable of a large damaging earthquake. The Eastern Tennessee Seismic Zone (ETSZ) is one of the most active areas in the southeastern U.S. Its known faults are generally ancient and no known active faults reach the surface. google_ad_width = 160; Article Id: Eastern Tennessee Seismic Zone (ETSZ) The Eastern Tennessee Seismic Zone (ETSZ) is one of the most active areas in the southeastern U.S. Its known faults are generally ancient and no known active faults reach the surface. Your feedback will go directly to Science X editors. Although historical data indicate that the region experienced some of the largest intraplate earthquakes in the world, little is known about the causative mechanisms for this seismic activity. Eastern Tennessee Seismic Zone: | The |Eastern Tennessee Seismic Zone| (ETSZ), also known as the |East Tennessee Seismic Zo... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled. Eastern Tennessee Seismic Zone. Due to proximity to the New Madrid fault line, most structures in Memphis are retrofitted to withstand earthquakes, but homes and buildings in Middle Tennessee generally do not have such prerequisites and likely will not need them. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization. Seismicity in the central and eastern United States consists of a low background level and several distinct zones, such as the eastern Tennessee and New Madrid seismic zones. The content is provided for information purposes only. The exact mechanisms of … A combination of features convinced Cox and colleagues that they were looking at a record of past earthquakes rather than signs of an ancient landslide. The known faults in the ETSZ are generally ancient; no known active faults reach the surface. Neither your address nor the recipient's address will be used for any other purpose. U.S . This map shows the locations of known earthquake epicenters in Virginia. Zone 0 = 0.0g Zone 1 = 0.075g Zone 2A = 0.15g Zone 2B = 0.20g Zone 3 = 0.30g ... Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Memphis Charlotte Louisville St. Louis Jonesboro ... United States Seismic Zones Map. The largest earthquakes in the ETSZ are the M4.6 in 1973 near Knoxville, Tennessee and the M4.6 on April 29, 2003 near Fort Payne, Alabama. Get weekly and/or daily updates delivered to your inbox. google_ad_width = 728; Events of magnitude 5–6 are estimated to occur once every 200 to 300 years. "I think we've got a pretty good case that this is related to active faulting, and that it does demonstrate that at least in periods of time in the past there have been strong earthquakes in the ETSZ," said Cox. Lithologic Controls on Focused Erosion and Intraplate Earthquakes in the Eastern Tennessee Seismic Zone Sean F. Gallen1,2 and J. Ryan Thigpen3 1Department of Geosciences, Colorado State University, Fort Collins, CO, USA, 2Department of Earth Sciences, Geological Institute, ETH Zürich, Zürich, Switzerland, 3Department of Earth and Environmental Sciences, University of Kentucky,          Political / Social. Intraplate Workshop CERI, 2015. The Eastern Tennessee Seismic Zone (ETSZ), a zone of small earthquakes stretching from northeastern Alabama to southwestern Virginia, may have generated earthquakes of … googletag.cmd.push(function() { googletag.display('div-gpt-ad-1449240174198-2'); }); The ETSZ is the second-most active natural seismic zone in the central and eastern United States, behind the New Madrid Seismic Zone in the Mississippi River region that produced the 1811-1812 magnitude 7+ earthquakes. John Bellini, a geophysicist with USGS, said “there is a history of earthquakes” in the Eastern Tennessee Seismic Zone, which extends into northwest Georgia and northeast Alabama. Eastern Tennessee has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 4 earthquakes in the past 30 days; 74 earthquakes in the past 365 days Photo: Wikimedia, CC0. "The ETSZ is right along the Smoky Mountains, which are a subrange of the Appalachians," Cox said.          Sexual Content High‐resolution lidar reveals newly recognized evidence of strong shaking in the New Madrid seismic zone in the central United States. google_ad_height = 90; Your opinions are important to us. At one site, a thrust fault with one meter displacement suggests that one of the earthquakes could have been magnitude 6 or even larger. or, by Seismological Society of America. Cox and colleagues also note that their study adds to a body of research suggesting that the Appalachian Mountains are undergoing a new period of uplift. Mw7.0 Greek islands off the coast of western Turkey, Meridional Heat Transfer - Ocean and Atmosphere, Today's Climate Change and the Permian-Triassic Boundary, Science X Daily and the Weekly Email Newsletter are free features that allow you to receive your favorite sci-tech news updates in your email inbox. A few damaging earthquakes have occurred in the ETSZ; the largest historic earthquakes measured 4.6 magnitude, occurring in 1973 near Knoxville, Tennessee and April 29, 2003 near Fort Payne, Alabama. [1] Research published in 2010 indicates a correlation between the Eastern Tennessee Seismic Zone and the New York-Alabama Lineament and suggests that earthquakes in the seismic zone originate at depth in metasedimentary gneiss.[4]. The eastern Tennessee seismic zone is a prominent feature on this map. Excessive Violence //-->, This article will be permanently flagged as inappropriate and made unaccessible to everyone. . /* 160x600, created 12/31/07 */ 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. Based on the page Eastern Tennessee. "But we don't have enough data right now to say whether or not this is some kind of ephemeral or maybe periodic activity," he noted. Randel Cox of the University of Memphis and colleagues searched for signs of ancient earthquakes below the muddy waterline of Douglas Lake, a 1943 Tennessee Valley Authority lake created by impounding the French Broad River. The Eastern Tennessee seismic zone (ETSZ) extends for more than 300 km from southeastern Kentucky southwestward into Alabama and is one of the most active intraplate seismic zones east of the Rocky Mountains on the … At two sites along the lake, the researchers uncovered clay-filled fractures, signs of soil liquefaction and polished rock shear fractures called slickenlines, that point to at least three past earthquakes in the area. 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. "We may have found a fault that is accommodating the uplift of the Smokies.". Description: This map shows cities, towns, counties, railroads, interstate highways, U.S. highways ... national parks, state parks, trails, rest areas, welcome centers, scenic byways and points of interest in East Tennessee. 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