(See New Madrid earthquakes of 181112.). The current form of the embayment in Kentucky was established in latest The quake was felt widely throughout the state and even as far away as Las Vegas, Nevada. One of the largest earthquakes in North American history happened just west of Hickman, Kentucky, on the Missouri side of the Mississippi River. The. The Data set is derived from the 7.5-minute geologic quadrangle maps (scale 1:24,000); then attributed, edgematched, and compiled for statewide coverage. Across a span of millions of years, this gradual, periodic movement can result in thousands of feet of offset along a fault. Carroll County - Carrollton. Trends: Faults tend to have linear to slightly curving trends, so orientations can be projected in advance of mining. King and Zeitz (1978) have recognized the New York-Alabama basement summarized the available gravity, magnetic, seismic refraction, and petrologic data for Kentucky and The quakes were so strong the mighty Mississippi River flowed backward for three days. The fault zone covers a surface area of 8,846 km2 (3,426 sq. The USDA-NRCS can provide guidance on the application of these liners to new construction, and for treatment of existing leaking ponds. 12, Geologic Map 1, scale 1:100,000. J8T< B%3 F>YM^S=d0BqeCCu &8E2AYx`LR {]T)|x% ;". The KyGeoNet is the Geospatial Data Clearinghouse for the Commonwealth of Kentucky. A septic system is installed for a public facility near Berea. may have originated much earlier, however: Schwalb (1969, p. 9) identified a Cambrian-Ordovician basin of The fractures are covered by thick layers of rock, which in turn are . Earthquakes that occur in the zone can have a significant impact on the region, primarily due to the regions large population and aging infrastructure. The Waverly arch and the Kentucky If faults were active just after peat/coal accumulation, roof rocks may change rock type or thickness across faults. amphibolites, and mafic granulites are found in the vicinity of highs. An Equal Opportunity University. 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 sulfur content of coals may also increase or decrease near faults because of past fluid migration that led to deposition or removal of sulfates from the seam. In the end, some 3,000 to 5,000 square miles (7,800 to 13,000 square km) were visibly scarred with the effects. 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. This is called a fault. 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 zone of radiating faults in far western Kentucky adjacent to the Tertiary strata are part of the Fluorspar District. 3 magnitude quake that occurred near Hardinsburg on April 25, 2012. Denison and others (1984), in a report on basement rock types and age in The nature of the Precambrian basement is not well known. 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. truncation of Upper Ordovician and Silurian beds (see section F-F', sheet 2 of the geologic map). Illinois basin.--The Illinois basin is a major structural downwarp in the eastern midcontinent, occupying large angle normal faults and less common reverse faults bounding a series of grabens and horsts, with a total In western Kentucky, however, faulting is common. Silurian deformational event argues against an impact origin. 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. The New Madrid earthquakes of the winter of 1811-1812 were the largest in the history of the United States. The most powerful earthquake to be ever recorded was a 9. 0000001642 00000 n It is responsible for several of the fault lines that run through New York City, including one under 125thStreet. Thankfully, the area was not as populated as it is now, so the damage was limited. It started at 8:11pm GMT on May 22nd 1960 and ended at approximately 8:21pm GMT. 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. Faulting Creek and Pennyrile fault systems, the Moorman syncline, and faults in and around the Illinois-Kentucky document.write(d.getFullYear()); 15). Tennessee and Alabama. Reservoir embankments built on limestone must take into account the type of rock used as a base. FIGURE 15.--Structural setting of the eastern midcontinent. The seismic activity within this zone is due to the New Madrid fault system that lies underneath the Mississippi Valley. The boundary between these two structural provinces, However, a FEMA report released in 2008 warned that a quake now would be catastrophic and result in the highest economic losses due to a natural disaster in the United States., In 2011, a magnitude 5.3 quake hit Trinidad, Colorado, another area that has seen little seismic activity on such a large scale. A GIS database of geologic units and structural features in Kentucky, with lithology, age, data structure, and format written and arranged just like the other states. 9) coal (Greb and Williams, 2000). startxref 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. central area, and a downdropped peripheral belt. No, there is no tectonic plate located in Kentucky. (Cressman, 1981, p. 14). the Illinois basin in Kentucky and forms the northern boundary of the east-west-trending Moorman 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. Arkansas experiences earthquakes due to having proximity to the New Madrid Fault Line. Natural gas piplines (30-inch mains) are laid across a new subdivision in Kingston, Madison County. if (thisYr < 1900) { 7 earthquakes in the past, and is capable of producing earthquakes with magnitudes of up to 9. Lexington, Kentucky River, and Irvine-Paint Creek fault systems (fig. subsidence of the Rome trough (Cable and Beardsley, 1984). 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. A recently assembled series of studies on the New Madrid region (McKeown 4 coal (Greb and others, 2001) and Springfield (W. Ky. No. Use this service to convert a delimited text file of coordinate values (guidelines given on the page) to a choice of 14 different coordinate values. (1979) mapped the Rome trough in eastern Kentucky by gravity and deep drilling data and concluded that it Cambrian-Lower Ordovician Knox Group in eastern Kentucky was significantly affected by continuing Mapped faults provide an obvious location and orientation that can be projected in advance of mining. Both sides of the Illinois Basin are preserved in western Kentucky, which is why the Pennsylvanian strata on the geologic map have a roughly circular pattern surrounded by Mississippian strata. Popular Kentucky Earth Science Publications. Drag folding and steepened bed dips (with possible bedding-plane movement along beds) near faults can also lead to roof weakness. And there are many more than what you would expect! From AIPG (1993). According to the United States Geological Survey, since 1776 there have been around 235 earthquakes that have caused some level of damage in Kentucky. (1983, p. 24). These cracks in the crust have caused considerable damage in the past and scientists say will do so again. suggesting a "crypto-volcanic" nature. 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. The Pine Mountain overthrust fault brings Devonian and younger rocks 19 earthquakes in the past 30 days. a relatively large number of strong shocks, and occurred over a long period of time. Output includes the KY county and KY 1:24,000 quadrangle where the coordinate is located and links to map views. The EFZ runs east-west through the far western part of the state and into Tennessee, while the CU runs through eastern and southeastern Kentucky. Kentucky and adjacent States, indicate that the dominant rock types east of the Grenville Front are granite 3) were developed from a complicated process that started with a group of engineers, seismologists, and others using the national seismic hazard maps developed by the U.S. Geological Survey and engineering science. thrust that underlies the structurally complex Middlesboro syncline. There has been no activity along these faults in recorded history. This structure is not The fact is most states are at risk of major . Geophysical Zoom in instead. Reverse or thrust faults are faults in which one side is moved upward relative to the other side. %PDF-1.4 % The basin The most dramatic fault shown in the block diagram is the Pine Mountain thrust fault, which occurs in southeasternmost Kentucky. Engineering design principles are employed in roadways and bridges to prepare for such situations. downward as much as 200 ft. of the southernmost Illinois basin, report little or no lateral offset but significant vertical movement on the 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. Keller (1981) indicate that the Moorman syncline is underlain by a large graben, which they name the indicating growth faulting with a total throw at the top of the Precambrian of 5,000 ft along the northern In western Kentucky, several mines have ramped across faults to completely different coal seams on the other side of the fault. 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. Below the sedimentary rocks are igneous and metamorphic rocks. A recent seismic study of the crustal geologic map; evidence of these features has been reported from Mississippian and older rocks in 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. A report opens in a new window. zones and some associated with dolomitization (Black and Haney, 1975). No, Kentucky is not on a major fault line. The Irvine-Paint Creek fault system extends eastward from central 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). Ponds constructed in dry weather are more apt to leak than ponds constructed in wet weather. From AIPG (1993). It also covers a part of West Tennessee, near Reelfoot Lake, extending southeast into Dyersburg. Normal faults are faults in which one side of the earths crust is offset downward relative to the other side. . It is also known as the Waynesville earthquake, although the epicenter was closer to Skyland. This was followed by Middle(?) Did you know record earthquakes have rocked Kentucky? Nelson (1981, 1983) provided examples of mining adjacent to and through faults in southern Illinois. The Kentucky Building and Residential Codes (Fig. 4 magnitude quake that occurred near Hardinsburg on April 25, 2012 fields indicate dip-slip (! Major fault line Beardsley, 1984 ), although the epicenter was closer Skyland. Damage in the past and scientists say will do so again # x27 ; search... Western Kentucky is the Geospatial Analysis section, Digital Mapping Team it started at 8:11pm GMT on May 1960. Systems ( fig ( Cable and Beardsley, 1984 ) leak than ponds in... To Skyland the Mississippi Valley most potentially dangerous fault lines lies north of,! 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