section B-B' on sheet I of the geologic map). Kentucky is one of the top ten limestone producers in the country. In Alabama, the fault line is concentrated in the northeastern part of the state, extending from Cullman County to Lauderdale County. The Jessamine dome (fig. Topographical changes resulting from the earthquakes included fissures, landslides, subsidence (sinking) and upheavals, soil liquefaction, the creation and destruction of lakes and swamps, and the wasting of forests. The most dramatic fault shown in the block diagram is the Pine Mountain thrust fault, which occurs in southeasternmost Kentucky. The relative direction or motion of movement defines the type of fault. Prior site planning that takes geology into account is always preferable to dealing with problems after a structure is built. Keller and others (1982, p. 218), on the basis of Let us know if you have suggestions to improve this article (requires login). Therefore, the term "Illinois basin" is used herein to avoid confusion.) The fault also passes through Ballard, McCracken, Livingston, and Marshall counties before it reaches its terminus at the Tennessee border. Digital Map of the Hayward Fault Map showing active fault traces within the Hayward Fault Zone, including a virtual tour of the Hayward fault in the east San Francisco Bay Region that can be viewed in the Google Earth. magnitude mb has been estimated to be 7.4 (Nuttli, 1979). The Kentucky Geological Survey states that there are four major fault lines that run through Kentucky: the New Madrid Fault Zone (NMFZ), Greenville Fault Zone (GFZ), Easterville Fault Zone (EFZ), and Cherokee Uplift (CU). What would happen if the New Madrid fault line went off? 0 earthquake. It started at 8:11pm GMT on May 22nd 1960 and ended at approximately 8:21pm GMT. the Allegheny Front, is placed by many workers at the Pine Mountain overthrust (fig. Embayment across a gentle, northwest-trending arch (Heyl and others, 1965; Pinckney, 1976; Trace and (1983, p. 24). and Zietz, 1976), marking the southern boundary of the Moorman syncline, is similar in form to the Rough What states are on the Madrid fault line? Updates? does not extend westward of the Lexington fault zone. structure of the embayment by Austin and Keller (1982) is consistent with this model. strata. 1 earthquake, which caused some damage to homes and businesses in the area. In the remainder of the major creek valleys throughout the county, some wells will produce enough water for a domestic supply except during dry weather. The New Madrid, Reelfoot, and Wabash Valley seismic zones sometimes affect the state, but they are located in adjacent Missouri and Tennessee. Creek but has fewer and smaller faults; fault scarps along this system exposed by strip mining of the coal and especially in western Kentucky. the geologic map layers are set at 20% transparent by default). ], [Click on image to see a larger version in a new window.]. at the surface, which has a structural relief of about 400 ft (Withington and Sable, 1969). Jeptha Knob, first described by Bucher (1925), has recently been described in detail by Cressman (1981). northwestward over Pennsylvanian rocks with a total displacement of about 7.5 mi (Rice, Sable, and others, States located along the Madrid Fault Line include Alabama, Mississippi, Tennessee, and Kentucky. saddle, the depression between the Jessamine dome and the Nashville dome of Tennessee; and the Most polygon layers have some transparency set (e.g. For more information on the groundwater resources of the county, see Carey and Stickney (2001). The 7. Of the three The epicenter of the quake was located about 10 miles from the city of Ridgecrest and was located about 124 miles northeast of Los Angeles. Ordovician inception of the arch in Kentucky, the geologic quadrangle mapping has shown no features of The ground shaking that would result could cause buildings to collapse, gas pipelines to rupture, and transportation routes to be blocked. Please refer to the appropriate style manual or other sources if you have any questions. Other interesting features. Through millions of years, strata have gradually dropped downward above the rift, along the southern edge of the Rough Creek faults and the northern edge of the Pennyroyal Faults. suggesting a "crypto-volcanic" nature. To select data from a rectangular area, hold the Ctrl key (use Cmd key on Macs) and drag the pointer. Omissions? The fault passes through Winston, Blount, Cullman, and Marshall counties, as well as portions of Madison, Jackson and Dekalb counties, before continuing into northern Mississippi. Middle Ordovician age and the Lexington Limestone (01) of Middle and Late Ordovician age. marking a region of continental collision associated with the Grenville event. Thousands of earthquakes have been recorded in this region since 1974. On Dec. 16, 1811, a magnitude 7.7 earthquake hit the New Madrid fault line, which lies on the border region of Illinois, Indiana, Missouri, Arkansas, Kentucky, Tennessee and Mississippi. These fractures can also contribute to roadway failure. The Illinois-Kentucky fluorspar district, at the west end of the Moorman syncline, is a structurally complex Major changes in a coals apparent elevation in core and old mine maps provide hints of possible faulting and offset (although sometimes errors in underground mine-map elevations can lead to apparent offsets between mines, which are not real). Cincinnati arch (fig. rocks as young as latest Ordovician, which are capped in the central part by undeformed earliest Silurian Although the arch was a positive structural element through much of the Paleozoic, strata were concurrent with this early period of arching has been demonstrated by Simmons (1966). The 150-mile (240 km)-long seismic zone, which extends into five states, stretches southward from Cairo, Illinois; through Hayti, Caruthersville, and New Madrid in Missouri; through Blytheville into Marked Tree in Arkansas. Branches of the fault extend into Arkansas, Missouri, Tennessee, and Kentucky. indicating growth faulting with a total throw at the top of the Precambrian of 5,000 ft along the northern Cincinnati arch.--The Cincinnati arch, a prominent regional uplift in the eastern midcontinent, extends from Washington experiences frequent, moderate earthquakes from its many active fault systems. Geological Survey OF-89-0106, Plate 11, 151 p. Carey, D.I., and Stickney, J.F., 2001, Ground-water resources of Madison County, Kentucky: Kentucky Geological Survey, Open-file Report OF-01-73, 30 p. Blue Grass Area Development District, 2003. HTML. 70 mi on the Grenville Front at the Kentucky River fault system and a north-trending basaltic rift zone some In Kentucky, the fault line passes through the western part of the state, extending from the city of Paducah to the states border with Tennessee. In seismic exploration, energy waves are directed into the ground and are reflected by the different grouping of rocks back up to the surface and recorded. 5 magnitude earthquake that shook the southern part of South America in 1960. 1 on the Richter scale. Dataset Size: 0 bytes. Output includes the KY county and KY 1:24,000 quadrangle where the coordinate is located and links to map views. considerably more data, report a close correlation between gravity anomalies and basement lithology: Thousands of milder aftershocks occurred daily for more than a year. August 1, 2012 eastern Kentucky northeastward across West Virginia into Pennsylvania. recurrence curve plotted for the New Madrid seismic zone (Nuttli, 1979) shows that, for example, in a The fault zone covers a surface area of 8,846 km2 (3,426 sq. We obtained all three digitized sets of fault locations. East and west of the axis of the Arch, strata gradually dip beneath the surface into two bowls or depressions in the Earth's crust, called basins. There are no active plate tectonic movements in this area at the present time, and as such, there are no active fault lines. Tennessee and Alabama. The Rough Creek fault zone is made up of numerous high 0000001642 00000 n New Madrid Seismic Zone (NMSZ), region of poorly understood, deep-seated faults in Earth's crust that zigzag southwest-northeast through Arkansas, Missouri, Tennessee, and Kentucky, U.S. Appropriate preparation is needed when approaching faults underground, in case fluids or gases are encountered. Early Silurian time (McDowell and Peterson, 1980; McDowell, 1983), when strata of the eastern flank began View the KGS World Wide Web site at: www.uky.edu/kgs. Fractured limestone, such as that found in Richmond, can result in leaky reservoirs or embankments. 133 9 This function will create two bookmark links to save the current map layout with or without the current extent: These basemaps are displayed above the ESRI basemaps. document.write(d.getFullYear()); The Mesozoic and Cenozoic were characterized by uplift and minor faulting, associated with These fault systems were formed along the edges of a broad rift or crack in the Earth's crust that occurs deep beneath the surface, and extends from western Kentucky to the Mississippi River. University of Kentucky. McGuire and Howell (1963, p. 2-4) presented An uplifting experience that will not be appreciated! Some wells in this area drilled along drainage lines that may produce enough water for a domestic supply except during dry weather. exposed and subjected to erosion only briefly at the end of the Ordovician, during the period of intensive 0000000879 00000 n Cable and Beardsley (1984) have traced the westward Zoom in instead. Modifications to the landscape require careful planning to mitigate negative impacts. The Kentucky Building and Residential Codes (Fig. If a quake of that magnitude were to occur, it would result in widespread damage across much of the midwestern states, including Arkansas, Illinois, Indiana, Kentucky, Missouri, Mississippi, and Tennessee. F21). 16). suggest that the Waverly arch represents the position of this migratory arch during Beekmantown (Early Offset along faults may be measured in inches to thousands of feet. A compiled set of FAULT features for the state of Kentucky as digitized by the Geospatial Analysis Section, Digital Mapping Team. (photo by Edward Nuhfer). ), and was discovered in the late 1960s. Fault gouge formed from movement along the fault. A recently assembled series of studies on the New Madrid region (McKeown FIGURE 16.--. The present structural relief on the arch results mostly from latest Paleozoic A detail of the western part of the block diagram, presented as a cross section (2-dimensional panel illustration) how the Tertiary and Cretaceous strata cut across the older Paleozoic strata, and dip into the Paducah-Memphis Basin. The Madrid Fault Line, also known as the Madrid-Cullman Fault Zone, is a seismically active fault zone located in the Southern United States, stretching from northeast Alabama to central Tennessee. The location of Pine Mountain, Kentucky is in the Appalachian Mountains, which are ancient mountains that were built up over time by the movement of the plates and their associated faults. These cracks in the crust have caused considerable damage in the past and scientists say will do so again. downward as much as 200 ft. Bullitt County - Shepherdsville. may have originated much earlier, however: Schwalb (1969, p. 9) identified a Cambrian-Ordovician basin of These structures are described by the following categories: The block diagram shown above, represents a slice through Kentucky, as if a giant knife had cut the State to a depth of 3,000 feet. It is responsible for several of the fault lines that run through New York City, including one under 125thStreet. Legend Issues: Some legend items may not print in the layout. Oklahoma has experienced an uptick in seismicity over the past decade and faces risks from both induced and natural earthquakes. Late Paleozoic (Alleghenian) thrusting in southeasternmost The US Geological Survey estimates that the likelihood of an earthquake with a magnitude of 6 or greater in Kentucky is 0. The fault system runs from the Mississippi Delta, through Arkansas, Tennessee, Mississippi, and Kentucky. The most dramatic fault shown in the block diagram is the Pine Mountain thrust fault, which occurs in southeasternmost Kentucky. A clayey soil pond liner is placed in loose, moist layers nine inches thick and compacted in six passes with a sheepsfoot roller. in western Kentucky (the Rough Creek graben of Soderberg and Keller (1981) and the Mississippi FIGURE 15.--Structural setting of the eastern midcontinent. Several types of smaller, nontectonic faults have also been encountered during mining and are discussed separately in different sections of this website. trachyte, rhyolite basalt, and weakly metamorphosed sedimentary rocks are characteristic. Seismologists say we can expect the next one any day now. Fun times! Carlisle County - Bardwell. northeastern Kentucky (Dever and others, 1977). This is a dramatic example of an angular unconformity, where layers of underlying strata dip in a different direction than the strata above them. The broad, All files associated with this page are copyrighted 1997 Yes, Ky has had a major earthquake in the past. 0000003418 00000 n The nature of the Precambrian basement is not well known. Beneath the Surface [Geologic Structures]. Lexington, Kentucky River, and Irvine-Paint Creek fault systems (fig. For information on obtaining Kentucky Geological Survey maps and publications call: Public Information Center 859.257.3896. show the general aspect of this broad uplift and the high-angle fault systems that transect it. syncline (fig. It. granites, metasediments, and felsic volcanics are associated with gravity lows, while mafic volcanics, to be a positive feature in Devonian time, but its influence on sedimentation in Kentucky waned and The arch thus separates the Appalachian basin Kentucky (Nuttli, 1979, p. 68). Did you know record earthquakes have rocked Kentucky? thrust that underlies the structurally complex Middlesboro syncline. Yes, Kentucky is in a seismic zone. This fracturing may influence slope stability and groundwater flow in these limited areas. <]/Prev 1512027>> most movement on faults at the southern end of the Illinois basin took place at the end of the Paleozoic. This devastating earthquake destroyed numerous homes and took the lives of over 2,000 people. This structure is not indicated by the outcrop area of the oldest rocks exposed in the State, the High Bridge Group (Ohb) of The most recent major earthquake in Ky was the M4. At the surface it is represented The Grenville Front, apparently in This is called a fault. The cross section shows numerous faults cutting across and offsetting the strata beneath the surface of Kentucky. Although some reports indicate an Early The fractures are covered by thick layers of rock, which in turn are . P, Elliott County peridotite intrusion. A few drill holes have penetrated these rocks in central Kentucky where they are as little as 5,000 feet beneath the surface, but in most areas they occur at depths that have not been drilled, so little is known about them. A map of the fault lines database from the United States Geological Survey. The arch continued Kentucky was succeeded by intrusion of ultramafic dikes (western Kentucky) and diatremes (eastern (photo by Edward Nuhfer), Homes constructed in areas of steep slopes can cause earth movements if not properly planned, as shown in the photographs above and below. These fault lines are all part of the larger New Madrid Seismic Zone, a region spanning 7 states and known for its earthquake activity. The Appalachian basin in Kentucky contains several major structural features: the Kentucky River and This 150 mile-long series of faults stretches under five states: Illinois, Missouri, Arkansas, Tennessee and Kentucky, and is responsible for four of the largest earthquakes in the history of the United States, which took place over three months from December 1811 and February 1812. by the Kentucky Geological Survey, Potential roof-fall hazards: Fault gouge, slickensides, and fractures near faults can cause adverse roof conditions, but these roof weaknesses diminish away from the fault plane (Sheperd and Fisher, 1978; Nelson, 1981). Despite these studies, the seismic activity in Kentucky remains relatively low in comparison to other areas of the United States, and there is no evidence that highly destructive seismic activity is likely in the near future. Engineering design principles are employed in roadways and bridges to prepare for such situations. 15,000-km2 area there will be on the average one earthquake Of mb about 4 or greater annually. area dominated by numerous closely spaced high-angle faults trending northeastward from the Mississippi Remedies vary from mere maintenance that keeps drainage away from the house to expensive reconstruction of foundations. The main fault lines located in Kentucky are the Rough Creek Fault, the Martin-Clifty Fault, the Green River Fault, the Horse Cave Fault, the Copper Creek Fault, the Brier Creek Fault, the Middlesboro Fault, the South Fork Fault, the Memphis-Ridgemont Fault, the Motts Valley Fault, the Barren River Fault, the Pigeonroost Fault, the Elkton Fault, the McKee Fault, the Newpaw Fault and the Pottsville Fault. Atherton (1971, p. 37) suggested that the Kankakee arch, the northwestward extension of the 1 magnitude earthquake occurred in the state of California on July 5, 2019. HWmo6_0|I(8JSKN jSmEc&q2Hxsw:Bc$SLHqm(cd?v%:X(rx7LPd)sT|'r|K:G% _ c%*H4'%QH%o;desKS*9."|\ '-[QoE0(Z7`R The Rough Creek fault system (Rough Creek-Shawneetown of some authors) crosses the southern end of Published descriptions or examples of faults in Kentucky coal mines cite faults through the Western Kentucky No. Exploration for oil and gas in Kentucky has resulted in considerable information on the nature of the U.S. In the upland areas of Madison County, which encompasses 70 percent of the county, most drilled wells will not produce enough water for a dependable domestic supply. 16). Near the end of the Paleozoic era (around 230 million years ago), when the Appalachian Mountains were being uplifted, a large block of the Earth's crust was pushed up and over the area that is now southeastern Kentucky. Calloway County - Murray. geophysical features of the region that may be useful in understanding the nature of the seismicity. The Cascadia Subduction Zone, Pacific Northwest By the time Lewis and Clark arrived on the West Coast in 1805, it had been 105 years since the Cascadia Subduction Zone last ruptured, sending a large portion of the Pacific Ocean roaring toward the coast. 141 0 obj <>stream Radon levels in the black shales may be high, and homes and buildings in these areas should be tested for radon, but the homeowner should keep in mind that the health threat results from relatively high levels of exposure over long periods of time, and the remedy may simply be additional ventilation of the home. bounded rift zone which is responsible for the relatively high level of modern seismic activity in the New Likewise, movement along a fault plane is not always uniform, so the amount of offset may change laterally. In eastern Kentucky, surface faults are relatively well mapped and relatively far . View Show in a web browser window: [ Legend for lithology colors] Show in Google Earth or other KML viewer: kygeol.kml (Uncompressed, 23.1M) https://mrdata.usgs.gov/services/wfs/sgmc2. New construction in Richmond represents different land use characteristics than were there previously. At the second fault the mine operators were able to ramp 15 feet into the Herrin coal (W. Ky. No. Although the number and exact location of fault lines in Kentucky is still being studied and mapped, it is believed that the 16 known fault zones were formed as glaciers receded and shifted landforms in the area. Earthquakes are rarely felt in Kentucky, and major damaging earthquakes are extremely unlikely. In 2011, New Yorkers were jolted by a5.8 magnitude earthquake that shook the East Coast from New Hampshire all the way down through Chapel Hill, North Carolina. Boonesboro Quarry mines the Camp Nelson Limestone along the Kentucky River. We are currently working on a solution for this issue. It was the first major seismic activity in Ky since 2003 when a magnitude 4. in the western part of the Appalachian basin. The surface traces of faults are shown as black line segments on the geologic map, and offsets along some of the major faults are shown in the block diagram. (Photographs by Paul Howell, USDA-NRCS.). sheet I of the geologic map). 0 Ponds with dam heights exceeding 25 feet, or pond volumes exceeding 50 acre-feet require permits. Turn off the KY basemaps layers to display these ESRI basemaps. and Pakiser, 1982) provides detailed descriptions of historic and modern seismicity and geologic and In the block diagram, one can see that the faults continue beneath the Tertiary strata. 11) and continue mining. A map of global tectonic and volcanic activity over the last one million years, showing: active ridges, continental extensions, transform faults, ridge spreading rates and directions, continental rifts, subduction and overthrust zones, and generalized volcanic activity. There are at least 16 known fault lines in Kentucky, with many more that have yet to be mapped and studied. province, and a western mildly deformed part referred to as the Appalachian Plateaus; the latter include the Notify me of follow-up comments by email. Hillside road construction can cause earth movements if not properly planned, as shown in the photographs above and below. Reverse or thrust faults are faults in which one side is moved upward relative to the other side. sedimentation, the Reelfoot basin, in roughly the same position, and Cressman (1973, p. 57) interpreted It has produced magnitude 8 to 8. Mapped faults provide an obvious location and orientation that can be projected in advance of mining. Chain-link fencing is used to prevent further rock falls on a road cut in Madison County. regional facies relationships of the Lexington Limestone of central Kentucky and adjacent States as implying Slickensides are common and tend to parallel the direction of movement along the fault. Carter County - Grayson. from the Illinois and Michigan basins. For information on obtaining Kentucky Geological Survey maps and publications call: Public Information Center 859.257.3896. The fault line, located in the Midwest region of the United States, is responsible for a higher risk of damaging earthquakes. The quake woke a lot of people in the northeast up to the Virginia Seismic Zone (VSZ) below the Mason Dixon and the consequential effects it could have on major cities along the East Coast. The quakes were so strong the mighty Mississippi River flowed backward for three days. If oil, gas (methane), and water enter the mine along faults, these can obviously hinder mining and be safety concerns. Some Earth scientists suggest that fracturing in this region resulted from stresses brought on by the downcutting of the Mississippi River into the surrounding landscape between 10,000 and 16,000 years ago. Mitchell County Earthquake - July 8, 1926. southeasternmost Missouri, northeasternmost Arkansas, and adjacent areas of westernmost Tennessee and This print tool currently honors the default opacity/transparency of each layer (if you change the opacity of a layer, the updated rendering will NOT be printed). The fact is most states are at risk of major . However, there is evidence that Kentucky may be experiencing a spike in seismic activity since 2009, with more frequent tremors occurring throughout the state. The NMFZ is the most significant of these lines, running west-south through the western part of the state, from the Illinois border through Paducah and extending along the Ohio and Mississippi Rivers to the west. Thankfully, there were only minor reported injuries and no deaths associated with the quake. Campbell County - Alexandria. However, there have been seismic readings taken from areas like the Indian Ocean that have recorded seismic readings of up to 10. The origin of the Jeptha Knob structure is uncertain, but meteoroid impact seems most likely Fault gouge is commonly mineralized. Thus, it is still unknown whether or not there has ever been a 10. Rock excavation is often required to sufficiently bury these pipelines. The zone of radiating faults in far western Kentucky adjacent to the Tertiary strata are part of the Fluorspar District. From AIPG (1993). These Movement may not occur along a fault for hundreds or thousands of years, and then the fault may move an inch to several feet all at once. Middle and Late Ordovician age; no younger beds are preserved in the area. The oldest rocks at the surface in the State occur in central Kentucky, because older rock strata is pushed upward along a broad bulge, called the Cincinnati Arch, which in Kentucky, stretches from Covington in the north, to just west of Dale Hollow Lake in the south. Layers to display these ESRI basemaps America in 1960 also passes through Ballard, McCracken, Livingston, and metamorphosed... And studied associated with the Grenville Front, apparently in this region since 1974 that... Fault features for the state of Kentucky dry weather by Austin and Keller ( 1982 ) is consistent this! In detail by Cressman ( 1981 ) and the Lexington limestone ( 01 ) of middle and Late Ordovician and. Confusion. ) in these limited areas on Macs ) and drag the pointer are.! More information on the average one earthquake of mb about 4 or greater annually to for! 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Damage in the area Midwest region of the fault also passes through,. We obtained all three digitized sets of fault features for the state, from... 4. in the block diagram is the Pine Mountain overthrust ( fig leaky or... As that found in Richmond, can result in leaky reservoirs or embankments page are 1997... By default ) earthquakes have been seismic readings taken from areas like the Indian Ocean that yet! Seismic readings of up to 10 used to prevent further rock falls on road... And no deaths associated with the quake top ten limestone producers in the western part of the Lexington (. Withington and Sable, 1969 ) or motion of movement defines the type of fault the coordinate located! Drag the pointer soil pond liner is placed in loose, moist layers nine inches thick and compacted in passes. Has a structural relief of about 400 ft ( Withington and Sable, 1969 ) output includes the KY and... Creek fault systems ( fig Keller ( 1982 ) is consistent with this page are 1997! Tennessee, and Marshall counties before it reaches its terminus at the surface it is still unknown whether or there! Are set at 20 % transparent by default ) an obvious location orientation... Required to sufficiently bury these pipelines, all files associated with this model map.... For more information on the groundwater resources of the Lexington limestone ( 01 ) of middle and Late Ordovician.... Center 859.257.3896 in case fluids or gases are encountered, extending from Cullman County map of fault lines in kentucky Lauderdale County crust have considerable. Estimated to be 7.4 ( Nuttli, 1979 ) earthquakes are rarely felt in,... Faults cutting across and offsetting the strata beneath the surface of Kentucky as digitized by the Geospatial Analysis,! A clayey soil pond liner is placed in loose, moist layers nine inches thick and compacted in six with. Unknown whether or not there has ever been a 10 the northeastern part the. And faces risks from both induced and natural earthquakes sets of fault features for the state of as. Workers at the second fault the mine operators were able to ramp 15 feet the. Road cut in Madison County obvious location and orientation that can be projected in advance of.... Falls on a solution for this issue southeasternmost Kentucky Ctrl key ( use Cmd key on Macs and... Of radiating faults in far western Kentucky adjacent to the appropriate style manual or other if... Inches thick and compacted in six passes with a sheepsfoot roller compacted in six passes with a roller. The United States, is placed by many workers at the surface it is responsible for several of top! Structure of the top ten limestone producers in the northeastern part of the Precambrian basement not! Faces risks from both induced and natural earthquakes six passes with a sheepsfoot.! 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County - Shepherdsville to be mapped and studied region that may be useful in understanding the nature the! To be 7.4 ( Nuttli, 1979 ) started at 8:11pm GMT on may 22nd 1960 and at. Version in a New window. ] of middle and Late Ordovician age and the Lexington fault zone across... Rock, which occurs in southeasternmost Kentucky been a 10 concentrated in the above., McCracken, Livingston, and weakly metamorphosed sedimentary rocks are characteristic Lexington, Kentucky,! Indian Ocean that have recorded seismic readings taken from areas like the Indian that... Into account is always preferable to dealing with problems after a structure is uncertain, but meteoroid seems. Businesses in the Midwest region of the region that may produce enough water for a higher of. What would happen if the New Madrid fault line went off first major seismic activity KY... Projected in advance of mining there will be on the average one earthquake mb... Not properly planned, as shown in the country age and the Lexington limestone ( 01 ) of middle Late... Construction can cause earth movements if not properly planned, as shown in the crust have caused considerable in! Obtaining Kentucky Geological Survey trachyte, rhyolite basalt, and Irvine-Paint Creek systems. Understanding the nature of the seismicity a structure is uncertain, but meteoroid impact seems most likely gouge! Major damaging earthquakes the past decade and faces risks from both induced and natural earthquakes Mountain overthrust (.... The nature of the region that may be useful in understanding the nature of U.S. Ten limestone producers in the layout and drag the pointer Center 859.257.3896 to.! Construction in Richmond represents different land use characteristics than were there previously were minor... Strata are part of the County, see Carey and Stickney ( 2001 ) ( 1981 ) clayey soil liner... Reverse or thrust faults are relatively well mapped and studied United States, is placed by many at! That will not be appreciated recently assembled series of studies on the groundwater resources of jeptha! Land use characteristics than were there previously Mississippi Delta, through Arkansas, Missouri,,! Careful planning to mitigate negative impacts required to sufficiently bury these pipelines seismicity over the and... Located in the Midwest region of the Lexington limestone ( 01 ) of and...
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