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Geography Of Long Island
Long Island is in southeastern New York (state), New York, United States, separated from the rest of the state by the East River and from Connecticut by Long Island Sound. Long Island contains four counties, of which the western two are The five boroughs, boroughs (Queens, New York City, Queens and Brooklyn) of New York City, and the other two (Nassau County, New York, Nassau and Suffolk County, New York, Suffolk) are mainly suburban. Geology Long Island, as part of the Outer Lands region, is formed largely of four spines of glacial moraine, with a large, sandy outwash plain towards its barrier islands and the Atlantic Ocean. These moraines consist of gravel and loose rock left behind during the two most recent pulses of Wisconsin glaciation some 21,000 years ago (19,000 BC). The northern moraine, which directly abuts the North Shore (Long Island), North Shore of Long Island at points, is known as the Harbor Hill moraine. The more southerly moraine, known as the Ronkonkoma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Moraine
A moraine is any accumulation of unconsolidated debris ( regolith and rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines are those formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines ( till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet). Etymology The word ''moraine'' is borrowed from French , which in turn is derived from the Savoyard Italian ('mound of earth'). in this case was derived from Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kettle Lake
A kettle (also known as a kettle hole, kettlehole, or pothole) is a depression or hole in an outwash plain formed by retreating glaciers or draining floodwaters. The kettles are formed as a result of blocks of dead ice left behind by retreating glaciers, which become surrounded by sediment deposited by meltwater streams as there is increased friction. The ice becomes buried in the sediment and when the ice melts, a depression is left called a kettle hole, creating a dimpled appearance on the outwash plain. Lakes often fill these kettles; these are called kettle hole lakes. Another source is the sudden drainage of an ice-dammed lake and when the block melts, the hole it leaves behind is a kettle. As the ice melts, ramparts can form around the edge of the kettle hole. The lakes that fill these holes are seldom more than deep and eventually fill with sediment. In acidic conditions, a kettle bog may form but in alkaline conditions, it will be kettle peatland. Overview Kettles ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronkonkoma Lake
Lake Ronkonkoma is a freshwater lake in Suffolk County, NY, Suffolk County, New York (state), New York. It is a Kettle (landform), kettle lake formed by glacial retreat, retreating glaciers and is the largest freshwater lake on Long Island; it has a circumference of about and is across on average. The lake is owned by the Town of Islip under the terms of the Nicolls Patent. The land around it is controlled by three town governments – Smithtown, New York, Smithtown, Islip (town), New York, Islip and Brookhaven, New York, Brookhaven. The separation originated because three different Native American communities claimed lands on different shores, and these claims continued when the tribes gave separate deeds to the land under their control. The name Ronkonkoma comes from an Algonquian languages, Algonquian expression meaning "boundary fishing-lake", also earlier written as Raconkumake and Raconkamuck. Beginnings Smithtown founder Richard Smith's original holdings included the h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appalachian Mountains
The Appalachian Mountains, often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain. The general definition used is one followed by the United States Geological Survey and the Geological Survey of Canada to describe the respective countries' Physiographic region, physiographic regions. The U.S. uses the term Appalachian Highlands and Canada uses the term Appalachian Uplands; the Appalachian Mountains are not synonymous with the Appalachian Plateau, which is one of the provinces of the Appalachian Highlands. The Appalachian range runs from the Newfoundland (island), Island of Newfoundland in Canada, southwestward to Central Alabama in the United States; south of Newfoundland, it crosses the 96-square-mile (248.6 km2) archipelago of Saint Pierre and Miquelon, an overseas collectivity of France, meaning it is technica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hempstead Plains
The Hempstead Plains is a region of central Long Island, in what is now Nassau County, New York, Nassau County, in New York State. It was once an open expanse of native grassland estimated to once extend to about . It was separated from the North Shore of Long Island by the Harbor Hill Moraine, later approximately New York State Route 25, Route 25. The modern New York State Route 24, Hempstead Turnpike approximately traces the separation of the plain from the South Shore of Long Island. The east–west extent was from somewhat west of the modern Queens, New York City border to slightly beyond the Suffolk County border. The Town of Hempstead (town), New York, Hempstead, now America's most populous civil township, was first settled by European ethnic groups, Europeans around 1644. Although the settlers were from the English colony of Connecticut, a patent was issued by Netherlands, Dutch New Netherland after the settlers had purchased land from the local Native Americans. The tow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outwash Plain
An outwash plain, also called a sandur (plural: ''sandurs''), sandr or sandar, is a plain formed of glaciofluvial deposits due to meltwater outwash at the glacier terminus, terminus of a glacier. As it flows, the glacier grinds the underlying rock surface and carries the debris along. The meltwater at the snout of the glacier deposits its load of sediment over the outwash plain, with larger boulders being deposited near the terminal moraine, and smaller particles travelling further before being deposited. Sandurs are common in Iceland where geothermal activity accelerates the melting of ice flows and the deposition of sediment by meltwater. Formation Sandurs are found in glaciated areas, such as Svalbard, Kerguelen Islands, and Iceland. Glaciers and icecaps contain large amounts of silt and sediment, picked up as they erosion, erode the underlying rocks when they move slowly downhill, and at the snout of the glacier, meltwater can carry this sediment away from the glacier and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Shore (Long Island)
The South Shore of Long Island, in the U.S. state of New York, is the area along Long Island's Atlantic Ocean shoreline. Description Though some consider the South Shore to include parts of Queens, particularly the beach communities in the Rockaways such as Belle Harbor, the term is generally used to refer to the Long Island coastline in Nassau and Suffolk counties. It is often used as a generic name for the entire southern half of Long Island rather than just the area immediately adjacent to the coastline. The South Shore tends to be diverse in culture and income as it varies from one hamlet or village to another. In Suffolk County, there still remain pockets of old money from the Gilded Age, including the country seats of families from the Vanderbilts, Havemeyers, and others. The South Shore is also home to the seaside resort of The Hamptons on its east end, located on the South Fork of Long Island. On its west end, bordering Queens, the Five Towns retains pockets ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long Island Expressway
Long may refer to: Measurement * Long, characteristic of something of great duration * Long, characteristic of something of great length * Longitude (abbreviation: long.), a geographic coordinate * Longa (music), note value in early music mensural notation Places Asia * Long District, Laos * Long District, Phrae, Thailand * Longjiang (other) or River Long (lit. "dragon river"), one of several rivers in China * Yangtze River or Changjiang (lit. "Long River"), China Elsewhere * Long, Somme, France People * Long (Chinese surname) * Long (Western surname) Fictional characters * Long (''Bloody Roar''), in the video game series * Long, Aeon of Permanence in Honkai: Star Rail Sports * Long, a fielding term in cricket * Long, in tennis and similar games, beyond the service line during a serve and beyond the baseline during play Other uses * , a U.S. Navy ship name * Long (finance), a position in finance, especially stock markets * Lòng, name for a laneway in Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronkonkoma Moraine
The Ronkonkoma Moraine, in the geography of Long Island, forms the southern of two ridges along Long Island's "backbone." Description The Ronkonkoma Moraine, a terminal moraine, predates the Harbor Hill Moraine (which reached Long Island during the Wisconsin Glacial Episode); the Harbor Hill Moraine cut through the Ronkonkoma Moraine's western portions. The Ronkonkoma Moraine and the Harbor Hill Moraine intersect at Lake Success in western Nassau County. Today, the moraine is most prominent in Suffolk County, where it traverses the center of Long Island and forms the South Fork. Notable summits * Bald Hill – 331 ft (101 m)("The Bald Hills near Holtsville are the highest land in Suffolk County") * Telescope Hill – 334 feet (102 m) See also * Terminal moraine * List of glacial moraines This a partial list of moraine, glacial moraines. They are arranged by continents and divided by related Hydrology, hydrologic basins. This list is incomplete. Ple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harbor Hill Moraine
The Harbor Hill Moraine, in the geography of Long Island, forms the northern of two ridges along the "backbone" of Long Island. Description The Harbor Hill Moraine, skirting the North Shore, represents the terminal moraine of the most recent advance of the Wisconsinian glaciation, which reached its most southward advance about 18,000 years ago; the earlier Ronkonkoma Moraine, much cut through by outwash streams from the Harbor Hill Moraine, lies to the southeast. The Harbor Hill moraine is represented by the North Fork of eastern Long Island and in three disjunct sections farther east, Plum Island, Great Gull Island, and Fisher's Island. The western end is the Heights of Guwan in Brooklyn. The Harbor Hill Moraine, named for its prominence at Harbor Hill, Roslyn, New York, the highest point in Nassau County, resulted from a lingering equilibrium stage in the glacier's episodic retreat, creating a stationary melting front; the Long Island area became permanently free ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
