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Earthquakes In Illinois ...
The following is a list of earthquakes in Illinois. Earthquakes See also * 1811–12 New Madrid earthquakes * Geology of Illinois * New Madrid Seismic Zone * Sandwich Fault Zone * Wabash Valley Seismic Zone Notes References * External links Illinois Earthquakes– Western Illinois University Earthquakes in Illinois: 1795–2015– Illinois State Geological Survey Information by Region-Illinois– United States Geological Survey {{DEFAULTSORT:Earthquakes In Illinois, List Of Illinois-related lists Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Madrid And Wabash Seizmic Zones-USGS Mod
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Cairo, Illinois
Cairo ( ) is the southernmost city in Illinois and the county seat of Alexander County. The city is located at the confluence of the Ohio and Mississippi rivers. Fort Defiance, a Civil War camp, was built here in 1862 by Union General Ulysses S. Grant to control strategic access to the rivers, and launch and supply his successful campaigns south. Cairo has the lowest elevation of any location in Illinois and is the only Illinois city to be surrounded by levees. It is in the area of Southern Illinois known as Little Egypt, for which the city is named after Egypt's capital. Several blocks in the town comprise the Cairo Historic District, listed on the National Register of Historic Places (NRHP). The Old Customs House is also on the NRHP. The city is part of the Cape Girardeau–Jackson, MO–IL Metropolitan Statistical Area. Developed as a river port, Cairo was later bypassed by transportation changes away from the large expanse of low-lying land and water, which surrounds Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In Illinois ...
The following is a list of earthquakes in Illinois. Earthquakes See also * 1811–12 New Madrid earthquakes * Geology of Illinois * New Madrid Seismic Zone * Sandwich Fault Zone * Wabash Valley Seismic Zone Notes References * External links Illinois Earthquakes– Western Illinois University Earthquakes in Illinois: 1795–2015– Illinois State Geological Survey Information by Region-Illinois– United States Geological Survey {{DEFAULTSORT:Earthquakes In Illinois, List Of Illinois-related lists Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Government Printing Office
The United States Government Publishing Office (USGPO or GPO; formerly the United States Government Printing Office) is an agency of the legislative branch of the United States Federal government. The office produces and distributes information products and services for all three branches of the Federal Government, including U.S. passports for the Department of State as well as the official publications of the Supreme Court, the Congress, the Executive Office of the President, executive departments, and independent agencies. An act of Congress changed the office's name to its current form in 2014. History The Government Printing Office was created by congressional joint resolution () on June 23, 1860. It began operations March 4, 1861, with 350 employees and reached a peak employment of 8,500 in 1972. The agency began transformation to computer technology in the 1980s; along with the gradual replacement of paper with electronic document distribution, this has led to a stea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wabash Valley Seismic Zone
The Wabash Valley Seismic Zone (also known as the Wabash Valley Fault System or Zone) is a tectonic region located in the Midwest of the United States, centered on the valley of the Lower Wabash River, along the state line between southeastern Illinois and southwestern Indiana. Geology The Wabash Valley Seismic Zone consists largely of vertically oriented ("normal") faults deeply buried under layers of sediment. Although the tectonics of the region are still not fully understood and are the subject of ongoing research, these faults are thought by some to be associated with a branch of the New Madrid aulacogen, an old rift zone where the lithosphere actively began to pull apart at perhaps two separate times in the distant past. Present-day GPS measurements show that the region deforms at about 1–2 mm/yr with compression along the Wabash Valley Fault Zone, and extension in SW Indiana. The crust in the area has been weakened by the numerous faults, which remain active sites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandwich Fault Zone
The Sandwich Fault Zone is a fault zone that runs northwest from Oswego to Ogle County, transecting Lee County in Northern Illinois. The fault has generally not been active, although there was a minor earthquake in 2002, and another, slightly larger one, in 2010. It has a largely 400 to 600-foot vertical displacement, although parts can reach up to an 800-foot displacement, and is likely a configuration of several smaller faults, varying in both direction and displacement. See also * List of earthquakes in Illinois The following is a list of earthquakes in Illinois. Earthquakes See also * 1811–12 New Madrid earthquakes * Geology of Illinois * New Madrid Seismic Zone * Sandwich Fault Zone * Wabash Valley Seismic Zone Notes References * Externa ... Notes References * Geology of Illinois Geography of DeKalb County, Illinois Geography of Kendall County, Illinois Geography of LaSalle County, Illinois Geography of Lee County, Illinois Geography of Ogle C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Madrid Seismic Zone
The New Madrid Seismic Zone (), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri. The New Madrid fault system was responsible for the 1811–12 New Madrid earthquakes, and has the potential to produce large earthquakes in the future. Since 1812, frequent smaller earthquakes have been recorded in the area. Earthquakes that occur in the New Madrid Seismic Zone potentially threaten parts of seven American states: Illinois, Indiana, Missouri, Arkansas, Kentucky, Tennessee, and Mississippi. Location The -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. It also covers a part of West Tennessee, near Reelfoot Lake, extending s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Illinois
The geology of Illinois includes extensive deposits of marine sedimentary rocks from the Palaeozoic, as well as relatively minor contributions from the Mesozoic and Cenozoic. Ice age glaciation left a wealth of glacial topographic features throughout the state. Precambrian Geology Precambrian rocks of Illinois are deeply buried by 2000–13000 feet (610–3960 m) of later sediments. Drilling has revealed these rocks to be primarily intrusive felsic igneous rocks, though some extrusive felsic rocks have also been recovered from boreholes. Precambrian rocks of Illinois are highly faulted; tectonic extension and related thermal subsidence have led to the formation of two major sedimentary basins. These basins, termed the Illinois Basin and Michigan Basin, allowed for extensive deposition of sedimentary rock during the Palaeozoic Era. The Illinois Basin is a northwest-southeast asymmetrical structural basin that is filled with more than 4000 meters of Paleozoic sedimentary rocks. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marion County, Illinois
Marion County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 39,437. Its county seat is Salem. Marion County comprises the Centralia, IL Micropolitan Statistical Area, which is included in the St. Louis- St. Charles-Farmington, MO-IL Combined Statistical Area. History Marion County was organized on 24 January 1823 from portions of Jefferson and Fayette counties. It was named in honor of Revolutionary War Gen. Francis Marion, the "Swamp Fox". File:Marion County Illinois 1823.png, Marion County at the time of its creation in 1823 Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.6%) is water. The southwest corner of Marion County is the intersection of the Baseline with the Third Principal Meridian, the point of origin for the third survey of the Northwest Territory under the Land Ordinance of 1785. The origin is marked with a boulder south of Centralia just ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi County, Missouri
Mississippi County is a County (United States), county located in the Missouri Bootheel, Bootheel of the U.S. state of Missouri, with its eastern border formed by the Mississippi River. As of the 2020 United States census, 2020 census, the population was 12,577. The largest city and county seat is Charleston, Missouri, Charleston. The county was officially organized on February 14, 1845, and was named after the Mississippi River. History Mississippi County is located in what was formerly known as "Tywappity Bottom," a vast floodplain area bordered by the Scott County Hills on the north, St. James Bayou on the south, the Mississippi River on the east, and Little River (St. Francis River tributary), Little River on the west. In 1540, the Spanish explorer Hernando De Soto penetrated to the Arkansas River and perhaps well into present-day southeastern Missouri, which was then populated by various Native American tribes, including the Osage Nation, Osage. Under pressure from a consta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercalli Intensity Scale
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the effects of an earthquake at a given location, distinguished from the earthquake's inherent force or strength as measured by seismic magnitude scales (such as the "" magnitude usually reported for an earthquake). While shaking is caused by the seismic energy released by an earthquake, earthquakes differ in how much of their energy is radiated as seismic waves. Deeper earthquakes also have less interaction with the surface, and their energy is spread out across a larger volume. Shaking intensity is localized, generally diminishing with distance from the earthquake's epicenter, but can be amplified in sedimentary basins and certain kinds of unconsolidated soils. Intensity scales empirically categorize the intensity of shaking based on the effect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
