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Euclid Creek
Euclid Creek is a long stream located in Cuyahoga and Lake counties in the state of Ohio in the United States. The long main branch runs from the Euclid Creek Reservation of the Cleveland Metroparks to Lake Erie. The west (also known as south) branch is usually considered part of the main branch, and extends another to the creek's headwaters in Beachwood, Ohio. The east branch runs for and has headwaters in Willoughby Hills, Ohio. The stream has exposed geologic formations which proved of importance to science, and these formations proved economically important in the Cleveland, Ohio, area in the early and mid 1800s. Five major in-channel obstructions impair the stream, which runs through a heavily urbanized area east of Cleveland. Portions of the creek are culvertized and channelized, and the stream has been heavily polluted in the past. Although the level of pollution has lessened in the last 30 years, the fishery remains significantly impaired. The development of settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleveland Metroparks
Cleveland Metroparks is an extensive system of nature preserves in Greater Cleveland, Ohio. Eighteen reservations, which largely encircle the city of Cleveland, follow along the shore of Lake Erie and the rivers and creeks that flow through the region. Referred to unofficially as the 'Emerald Necklace',Cleveland Metropark2019). "About", Accessed: February 21, 2019. the network of parks spans over and includes over of walking, bicycle, and horse trails as well as numerous picnic areas, nature education centers, golf courses, and countless fishing spots. In addition, the district includes the zoo in Cleveland. Four of the reservations are adjacent to Cuyahoga Valley National Park. Although the majority of the reservations are in suburban Cuyahoga County, Brookside Reservation is located within the city of Cleveland, and the Lakefront Reservation consists of several beachfront parks spanning the city's waterfront. Additionally, three of the reservations are either partially or ent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuyahoga County, Ohio
Cuyahoga County ( or ) is a large urban county located in the northeastern part of the U.S. state of Ohio. It is situated on the southern shore of Lake Erie, across the Canada–United States border, U.S.-Canada maritime border. As of the 2020 United States census, 2020 census, its population was 1,264,817, making it the List of counties in Ohio, second-most-populous county in the state. The county seat and largest city is Cleveland. The county is bisected by the Cuyahoga River, after which it was List of Ohio county name etymologies, named. "Cuyahoga" is an Iroquoian languages, Iroquoian word meaning "crooked river". Cuyahoga County is the core of the Greater Cleveland, Greater Cleveland Metropolitan Area and of the Northeast_Ohio#Combined_Statistical_Area, Cleveland–Akron–Canton combined statistical area. History The land that became Cuyahoga County was previously part of the French colony of New France, Canada (New France), which was ceded in 1763 to Kingdom of Great Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleveland Shale
The Cleveland Shale, also referred to as the Cleveland Member, is a shale geologic formation in the eastern United States. Identification and name The Cleveland Shale was identified in 1870 and named for the city of Cleveland, Ohio. John Strong Newberry, director of the Ohio State Geological Survey, first identified the formation in 1870. He called it the "Cleveland Shale" and designated its type locality at Doan Brook near Cleveland. Details of the type locality and of stratigraphic nomenclature for this unit as used by the U.S. Geological Survey are available on-line at the National Geologic Map Database. Description The primary minerals in the Cleveland Shale are chlorite, illite, pyrite, and quartz. Underground, the Cleveland Shale is black, dull grayish-black, bluish-black, or brownish-black in color. In exposed outcrops, it weathers to red, reddish-brown, or medium brown. Highly weathered rock turns gray. It is fairly fissile, breaking into thin, irregularly shaped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willoughby, Ohio
Willoughby is a city in Lake County, Ohio and is a suburb of Cleveland. The population was 22,268 at the time of the 2010 census. History Willoughby's first permanent settler was David Abbott in 1798, who operated a gristmill. Abbott and his family were said to have had close relations with a band of Indians along the banks of the local river, which the Indians called the "Sha-ga-rin" meaning "Clear Water." This river was later called the Chagrin River, though the origin of the name remains in dispute. In 1835, the village was permanently named "Willoughby" in honor of Westel Willoughby, Jr., a public health official that the founders of a short-lived Medical College, which was based in the city, hoped to attract to the area. Many historical buildings from this period survive to this date, affording the downtown Willoughby area some outstanding specimens of 19th century architecture. In World War I, the U.S. Army chose Willoughby as the site for a chemical weapons plant produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminal Moraine
A terminal moraine, also called end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge of the ice, is driven no further and instead is deposited in an unsorted pile of sediment. Because the glacier acts very much like a conveyor belt, the longer it stays in one place, the greater the amount of material that will be deposited. The moraine is left as the marking point of the terminal extent of the ice. Formation As a glacier moves along its path, the surrounding area is continuously eroding. Loose rock and pieces of bedrock are constantly being picked up and transported with the glacier. Fine sediment and particles are also incorporated into the glacial ice. The accumulation of these rocks and sediment together form what is called glacial till when deposited. Push moraines are formed when a glacier retreats from a previou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Erratic
A glacial erratic is glacially deposited rock differing from the type of rock native to the area in which it rests. Erratics, which take their name from the Latin word ' ("to wander"), are carried by glacial ice, often over distances of hundreds of kilometres. Erratics can range in size from pebbles to large boulders such as Big Rock () in Alberta. Geologists identify erratics by studying the rocks surrounding the position of the erratic and the composition of the erratic itself. Erratics are significant because: *They can be transported by glaciers, and they are thereby one of a series of indicators which mark the path of prehistoric glacier movement. Their lithographic origin can be traced to the parent bedrock, allowing for confirmation of the ice flow route. *They can be transported by ice rafting. This allows quantification of the extent of glacial flooding resulting from ice dam failure which release the waters stored in proglacial lakes such as Lake Missoula. Erratics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Till
image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is diagnostic of till. image:Glacial till exposed in roadcut-750px.jpg, Glacial till with tufts of grass Till or glacial till is unsorted glacier, glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines. Till is classified into primary deposits, laid down directly by glaciers, and secondary deposits, reworked by fluvial transport and other processes. Description Till is a form of '' glacial drift'', which is rock material transported by a glacier and deposited directly from the ice or from running water emerging from the ice. It is distinguished from other forms of drift in that it is depos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wisconsin Glaciation
The Wisconsin Glacial Episode, also called the Wisconsin glaciation, was the most recent glacial period of the North American ice sheet complex. This advance included the Cordilleran Ice Sheet, which nucleated in the northern North American Cordillera; the Innuitian ice sheet, which extended across the Canadian Arctic Archipelago; the Greenland ice sheet; and the massive Laurentide Ice Sheet, which covered the high latitudes of central and eastern North America. This advance was synchronous with global glaciation during the last glacial period, including the North American alpine glacier advance, known as the Pinedale glaciation. The Wisconsin glaciation extended from approximately 75,000 to 11,000 years ago, between the Sangamonian Stage and the current interglacial, the Holocene. The maximum ice extent occurred approximately 25,000–21,000 years ago during the last glacial maximum, also known as the ''Late Wisconsin'' in North America. This glaciation radically altered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrace (geology)
In geology, a terrace is a step-like landform. A terrace consists of a flat or gently sloping geomorphic surface, called a tread, that is typically bounded on one side by a steeper ascending slope, which is called a "riser" or "scarp". The tread and the steeper descending slope (riser or scarp) together constitute the terrace. Terraces can also consist of a tread bounded on all sides by a descending riser or scarp. A narrow terrace is often called a bench.Howard, A.D., R.W. Fairbridge, J.H. Quinn, 1968, "Terraces, Fluvial—Introduction", in R.W. Fairbridge, ed., ''The Encyclopedia of Geomorphology: Encyclopedia of Earth Science Series'', vol. 3. Reinhold Book Corporation. New York, New York.Jackson, J.A., 1997, ''Glossary of Geology''. American Geological Institute. Alexandria, Virginia. The sediments underlying the tread and riser of a terrace are also commonly, but incorrectly, called terraces, leading to confusion. Terraces are formed in various ways. Fluvial terraces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erie Plain
The Erie Plain is a lacustrine plain that borders Lake Erie in North America. From Buffalo, New York, to Cleveland, Ohio, it is quite narrow (at best only a few miles/kilometers wide), but broadens considerably from Cleveland around Lake Erie to Southern Ontario, where it forms most of the Ontario peninsula. The Erie Plain was used in the United States as a natural gateway to the North American interior, and in both the United States and Canada the plain is heavily populated and provides very fertile agricultural land. Creation of the plain The Erie Plain is a lacustrine plain consisting largely of sediment laid down by a series of proglacial lakes. These existed in the late Pleistocene Epoch, about 25,000 years ago to about 11,700 years ago, and were created by glaciers of the Wisconsin glaciation (the last ice age). The largest of these was Lake Whittlesey. In some places in Pennsylvania and Ohio, the Erie Plain is broken by the very slight former shoreline of Lake Warren. This g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portage Escarpment
The Portage Escarpment is a major landform in the U.S. states of Ohio, Pennsylvania, and New York which marks the boundary between the Till Plains to the north and west and the Appalachian Plateau to the east and south. The escarpment is the defining geological feature of New York's Finger Lakes region. Its proximity to Lake Erie creates a narrow but easily traveled route between upstate New York and the Midwest. Extensive industrial and residential development occurred along this route. It is also called the Allegheny Escarpment in its southern portion after it diverges from Lake Erie in Ohio. General description The Portage Escarpment forms the northern and western boundary between the Appalachian Plateau and the Till Plains of the Central Lowland physiographic section of the United States. The escarpment begins in eastern New York. Nevin Fenneman placed its starting point between Cayuga Lake and Seneca Lake, where the Onondaga Escarpment transitions to the sandstone of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allegheny Plateau
The Allegheny Plateau , in the United States, is a large dissected plateau area of the Appalachian Mountains in western and central New York, northern and western Pennsylvania, northern and western West Virginia, and eastern Ohio. It is divided into the unglaciated Allegheny Plateau and the glaciated Allegheny Plateau. The plateau extends southward into western West Virginia, eastern Kentucky and Tennessee where it is instead called the Cumberland Plateau. The plateau terminates in the east at the Allegheny Mountains, which are the highest ridges just west of the Allegheny Front. The Front extends from central Pennsylvania through Maryland and into eastern West Virginia. The plateau is bordered on the west by glacial till plains in the north, generally north of the Ohio River, and the Bluegrass region in the south, generally south of the Ohio River. Elevations vary greatly. In the glaciated Allegheny Plateau, relief may only reach one hundred feet or less. In the unglacia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
