|
Muhlenberg County, Kentucky
Muhlenberg County () is a county in the U.S. Commonwealth of Kentucky. As of the 2020 census, the population was 30,928. Its county seat is Greenville. History Muhlenberg County was formed in 1798 from the areas known as Logan and Christian counties. Muhlenberg was the 34th county to be founded in Kentucky. Muhlenberg was named after General Peter Muhlenberg, who was a colonial general during the American Revolutionary War. Geography According to the United States Census Bureau, the county has an area of , of which is land and (2.6%) is water. Features The two primary aquatic features of Muhlenberg County are the Green River and Lake Malone. The northern area of the county's geography includes gently rolling hills, river flatlands, and some sizeable bald cypress swamps along Cypress Creek and its tributaries. The southern portion consists of rolling hills with higher relief. The southern part of the county is dotted with deep gorges. This area is known for many sandstone f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Muhlenberg
John Peter Gabriel Muhlenberg (October 1, 1746October 1, 1807) was an American clergyman, Continental Army soldier during the American Revolutionary War, and political figure in the newly independent United States. A Lutheranism, Lutheran minister, he served in the United States House of Representatives and United States Senate from Pennsylvania. Early life and education Muhlenberg was born October 1, 1746, in Trappe, Pennsylvania, Trappe in the Province of Pennsylvania to Anna Maria Weiser, the daughter of Pennsylvania Dutch pioneer and diplomat Conrad Weiser, and Henry Muhlenberg a German Lutheran pastor. He was sent, together with his brothers, Frederick Muhlenberg, Frederick Augustus and Gotthilf Henry Ernst Muhlenberg, Gotthilf Henry Ernst in 1763 to Halle, Saxony-Anhalt, Halle. They were educated in Latin at the Francke Foundations. He left school in 1767 to start as a sales assistant in Lübeck, but returned that same year to Pennsylvania. Career He served briefly in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Mining
Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels. In North America, where the majority of surface coal mining occurs, this method began to be used in the mid-16th century and is practiced throughout the world in the mining of many different minerals. In North America, surface mining gained popularity throughout the 20th century, and surface mines now produce most of the coal mined in the United States. In most forms of surface mining, heavy equipment, such as earthmovers, first remove the overburden. Next, large machines, such as dragline excavators or bucket-wheel excavators, extract the mineral. The pros of surface mining are that it has a lower financial cost and is a lot safer than undergr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Arch
A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs, coastal cliffs, fins or stacks are subject to erosion from the sea, rivers or weathering ( subaerial processes). Most natural arches are formed from narrow fins and sea stacks composed of sandstone or limestone with steep, often vertical, cliff faces. The formations become narrower due to erosion over geologic time scales. The softer rock stratum erodes away creating rock shelters, or alcoves, on opposite sides of the formation beneath the relatively harder stratum, or caprock, above it. The alcoves erode further into the formation eventually meeting underneath the harder caprock layer, thus creating an arch. The erosional processes exploit weaknesses in the softer rock layers making cracks larger and removing material more quickly than the caprock; however, the caprock itself continues to er ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Todd County, Kentucky
Todd County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 12,460. Its county seat is Elkton. The county is named for Colonel John Todd, who was killed at the Battle of Blue Licks in 1782 during the American Revolution. History Early history Todd County consists of two geographical regions known historically as the high country to the north and low country to the south. The northern highlands consist of steep-sloped sandstone terrain with forests of oak, walnut and poplar. The landscape contains steep bluffs and sharp rises and falls within the terrain. The southern lowlands consist of rolling limestone flatlands void of aquifer sinks and consist of dense but sparse forests of oak, walnut poplar and ash. The historic inhabitants of the region before European encounter were the Iroquoian language-speaking Cherokee, who had migrated centuries earlier from areas around the Great Lakes. They used the lands for hunting and gathering.Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Malone State Park
Lake Malone State Park is a state park located near Dunmor, Kentucky, in Muhlenberg County and extending into parts of Logan County and Todd County. In addition to the Lake Malone, the natural features of the park include sandstone cliffs and a natural rock bridge. Activities and amenities The park features campsites, picnic areas, a swimming area, a boat ramp, and a dock. The Laurel Trail leads through a hardwood forest filled with mountain laurel, holly, dogwood ''Cornus'' is a genus of about 30–60 species of woody plants in the family Cornaceae, commonly known as dogwoods, which can generally be distinguished by their blossoms, berries, and distinctive bark. Most are deciduous trees or shru ..., and wildflowers. The adjacent Lake Malone is managed by the Kentucky Department of Fish and Wildlife and is popular with boaters and fishermen. References External linksLake Malone State ParkKentucky State Parks Lake MaloneKentucky Department of Fish and Wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi River
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is , of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana. Native Americans have lived along the Mississippi River and its tributaries for thousands of years. Most were hunter-ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous ( Pennsylvanian) and Permian times. Many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its electricity. Some iron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ohio River
The Ohio River is a long river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing southwesterly from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illinois. It is the third largest river by discharge volume in the United States and the largest tributary by volume of the north-south flowing Mississippi River that divides the eastern from western United States. It is also the 6th oldest river on the North American continent. The river flows through or along the border of six states, and its drainage basin includes parts of 14 states. Through its largest tributary, the Tennessee River, the basin includes several states of the southeastern U.S. It is the source of drinking water for five million people. The lower Ohio River just below Louisville is obstructed by rapids known as the Falls of the Ohio where the elevation falls in restricting larger commercial navigation, although in the 18th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Ore
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (, 72.4% Fe), hematite (, 69.9% Fe), goethite (, 62.9% Fe), limonite (, 55% Fe) or siderite (, 48.2% Fe). Ores containing very high quantities of hematite or magnetite (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel—98% of the mined iron ore is used to make steel. In 2011 the ''Financial Times'' quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil". Sources Metallic iron is virtually unknown on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's surface. Like uncemented sand, sandstone may be any color due to impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions. Rock formations that are primarily composed of sandstone usually allow the percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Quartz-bearing sandstone can be changed into quartzite through metamorphism, usually related to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saunders_Quarry-1.jpg "Click for more on -> Sandstone")