map of fault lines in kentucky

Some seismologists believe that the maximum magnitude for a quake is 9. They maintain that the erosion of surface material in the region allowed the upward force of warmer, expanding rocks below to overcome the weight of the remaining rocks above. Freeman (1951, p. granites, metasediments, and felsic volcanics are associated with gravity lows, while mafic volcanics, Our editors will review what youve submitted and determine whether to revise the article. document.write(thisYr); 4 coal (Greb and others, 2001) and Springfield (W. Ky. No. Legend Issues: Some legend items may not print in the layout. syncline (fig. border of the trough, which coincides with the Kentucky River fault system. Use the search capabilities of the KyGovMaps Open GIS Data . USGS Interactive Fault Maps. In western Kentucky, however, faulting is common. Contact the Webmaster for questions and comments. downward as much as 200 ft. 12, Geologic Map 1, scale 1:100,000. 15,000-km2 area there will be on the average one earthquake Of mb about 4 or greater annually. Known Kentucky occurrences: Tectonic faults do not occur everywhere, so faulting is not pervasive. The Irvine-Paint Creek fault system extends eastward from central 0 considerably more data, report a close correlation between gravity anomalies and basement lithology: We obtained all three digitized sets of fault locations. The first shock was felt from Canada to New Orleans and as far away as Boston, Massachusetts and Washington, D.C. An uplifting experience that will not be appreciated! It's by far the largest earthquake ever to strike the United States east of the Rockies. Cable and Beardsley (1984) have traced the westward For information on obtaining Kentucky Geological Survey maps and publications call: Public Information Center 859.257.3896. Ages range Thousands of earthquakes have been recorded in this region since 1974. 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. 2 and caused major destruction throughout the state. from the geologic quadrangle mapping. 2 that took place near Cawood in 1909. Valley syncline (Krause and Treworgy, 1979). Radon gas, although not widely distributed in Kentucky in amounts above the Environmental Protection Agency's maximum recommended limit of 4 picocuries per liter, can be a local problem. //--> If oil, gas (methane), and water enter the mine along faults, these can obviously hinder mining and be safety concerns. 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. The Appalachian basin in Kentucky contains several major structural features: the Kentucky River and 1979, p. F23) (see cross section G'-G"). Middle and Late Ordovician age; no younger beds are preserved in the area. Campbell County - Alexandria. Major structural elements within the basin in Kentucky are the Rough from the Illinois and Michigan basins. Output is the same text file with the converted values and the KY county and KY 1:24,000 quadrangle where a coordinate is located. 0000001185 00000 n OKeefe and others (2008) reported on a mine in Hopkins County that began in the Springfield coal, crossed a fault without much offset into the Coiltown coal (W. Ky. No. 16). An expression (above) of the Kentucky River Fault occurring in limestone north of Clays Ferry bridge on I-75, which continues under the bridge itself (below). in western Kentucky (the Rough Creek graben of Soderberg and Keller (1981) and the Mississippi The faults that cut across the coal field are part of the Rough Creek FAult System. Lying in the central area of the North American Plate, the seismic zone is about 45 miles (70 km) wide and about 125 miles (200 km) long. The arch continued in the western part of the Appalachian basin. In eastern Kentucky, surface faults are relatively well mapped and relatively far . to be a positive feature in Devonian time, but its influence on sedimentation in Kentucky waned and 0000001550 00000 n 9) coal (Greb and Williams, 2000). field (sheet I of the geologic map). View the KGS World Wide Web site at: www.uky.edu/kgs. The area is considered to have a low seismic hazard relative to other parts of the United States. 133 0 obj <> endobj the Allegheny Front, is placed by many workers at the Pine Mountain overthrust (fig. Welcome to the Kentucky Geography Network. In the fall of 1996, ESEN was expanded to provide resources from around the globe using the World Wide Web. now = new Date; In western Kentucky, several mines have ramped across faults to completely different coal seams on the other side of the fault. 877.778.7827 (toll free). Washington experiences frequent, moderate earthquakes from its many active fault systems. Cressman (1981) suggested that Mississippian doming over a pre Its not just the Virginia Seismic Zone New Yorkers have to worry about. Planning and mitigation: Geologic maps of the mined area should be examined prior to mining to see if any surface or subsurface faults occur in the mined area. 3 magnitude quake that occurred near Hardinsburg on April 25, 2012. There has been no activity along these faults in recorded history. Embayment) and in central Kentucky (Keller and others, 1982). While every effort has been made to follow citation style rules, there may be some discrepancies. Remedies vary from mere maintenance that keeps drainage away from the house to expensive reconstruction of foundations. The 9. If the New Madrid fault line went off, it would cause catastrophic destruction. Contains faults, geologic units, and geologic contacts. Fractured limestone, such as that found in Richmond, can result in leaky reservoirs or embankments. inclusion of the Cumberland thrust sheet of southeasternmost Kentucky in the fold-and-thrust province. Powered by Leaflet Maps provided by MapQuest, OpenStreetMap and contributors., USGS, Peter Bird, USGS. Within the thin Kentucky River valley along the northern edge of Madison County, and in the lower reaches of the valleys of the larger creeks that empty into the Kentucky River, most drilled wells will produce enough water for a domestic supply at depths of less than 100 feet. These structures appear on sheet most movement on faults at the southern end of the Illinois basin took place at the end of the Paleozoic. Amos, 1984). central area, and a downdropped peripheral belt. Most of the movement along Kentucky's faults occurred in the distant past. been reactivated in the late Paleozoic and possibly Mesozoic. Which 6 states are most at risk for these earthquakes? Rough Creek fault system through at least Early Permian time. Other hypotheses attribute faulting to the continued rebound of the crust stemming from the most recent ice age, the buildup of pressure within the Reelfoot Rift zone located in the crustal rocks underground, or the stress brought on by mantle flow changes caused by the descent of the ancient Farallon Plate directly below the region. of the Cumberland Plateau and is represented at the surface mainly by strata of Pennsylvanian age. 3 earthquakes in the past 7 days. It was the first major earthquake in California since the 6. Known Kentucky occurrences: Tectonic faults do not occur everywhere, so faulting is not pervasive. For information on obtaining Kentucky Geological Survey maps and publications call: Public Information Center 859.257.3896. Please refer to the appropriate style manual or other sources if you have any questions. It also covers a part of West Tennessee, near Reelfoot Lake, extending southeast into Dyersburg. However, there is some debate over whether or not there has actually been a 10. Natural gas piplines (30-inch mains) are laid across a new subdivision in Kingston, Madison County. Cincinnati arch (fig. Calloway County - Murray. Breckinridge County - Hardinsburg. Englund and Roen (1963) suggested a meteor-impact origin for the structure on the basis of the presence of 16). (photo by Edward Nuhfer). Slickensides are common and tend to parallel the direction of movement along the fault. Beneath the Surface [Geologic Structures]. thisYr = thisYr + 1900; No, Kentucky is not on a major fault line. parts of Illinois, Indiana, and Kentucky and lying between the Ozark uplift on the west and the Cincinnati To select data from a rectangular area, hold the Ctrl key (use Cmd key on Macs) and drag the pointer. basin as a whole contains sedimentary rocks of Precambrian to Early Permian age in a sequence that has a The Illinois-Kentucky fluorspar district, at the west end of the Moorman syncline, is a structurally complex The downbow causes Ordovician rocks, which occur at the surface in central Kentucky, to be depressed beneath the surface more than 3,000 feet in the eastern Kentucky part of the Appalachian Basin, and more than 4,000 feet beneath the surface in the Illinois Basin of western Kentucky. thisYr = now.getYear(); As an alternative, use your computer or device screen capture tool to make an image of the map. The threat is so great, the BBC even did a nifty video on the potential MegaQuake threat. J8T< B%3 F>YM^S=d0BqeCCu &8E2AYx`LR {]T)|x% ;". by a brecciated center within a belt of concentric faults. Creek but has fewer and smaller faults; fault scarps along this system exposed by strip mining of the coal The. Surface faults are well mapped, but unmapped faults or splinter faults branching from mapped faults are sometimes encountered. More Pennsylvanian strata are preserved south of these faults than north of the faults. Overall, the Madrid Fault Line affects the following states: Alabama, Mississippi, Tennessee, and Kentucky. sheet I of the geologic map). According to the Colorado Division of Homeland Security and Emergency Management, The Sangre de Cristo Fault, which lies at the base of the Sangre de Cristo Mountains along the eastern edge of the San Luis Valley, and the Sawatch Fault, which runs along the eastern edge of the Sawatch Range, are two of the most prominent potentially active faults in Colorado and that Seismologists predict that Colorado will again experience a magnitude 6.5 earthquake at some unknown point in the future.. Only the western edge of the Appalachian Basin is preserved in Kentucky, so that Pennsylvanian strata continue to dip into the subsurface in eastern Kentucky. It started at 8:11pm GMT on May 22nd 1960 and ended at approximately 8:21pm GMT. 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. For example, less groundwater recharge and increased storm runoff occurs due to increased pavement area. The town of Middlesboro, in far southeastern Kentucky (sheet 3), is located in a topographic basin that is the Appropriate preparation is needed when approaching faults underground, in case fluids or gases are encountered. Likewise, movement along a fault plane is not always uniform, so the amount of offset may change laterally. Deposition of the Upper A recently assembled series of studies on the New Madrid region (McKeown 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 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. %%EOF Keller and others, 1982, p. 220). %PDF-1.4 % structure of the embayment by Austin and Keller (1982) is consistent with this model.