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Toronto Waterfront
The Toronto waterfront is the lakeshore of Lake Ontario in the city of Toronto, Ontario, Canada. It spans 46 kilometres between the mouth of Etobicoke Creek in the west and the Rouge River in the east. History Lake Ontario is a recent lake. As the last glaciation, the Laurentian glaciation receded, a number of proglacial lakes filled in basins adjacent to the glacier. One of those proglacial lakes was Lake Iroquois. Lake Iroquois was considerably deeper than Lake Ontario, as a lobe of the Laurentian glacier still filled the valley of what is now the St. Lawrence River. The southern boundary of Lake Iroquois was the Niagara escarpment. The lake flowed over the Niagara Escarpment east of Rochester, and flowed to the Atlantic Ocean down what is now the Mohawk River, to the Hudson River. The shoreline of Lake Iroquois can be observed in steep hills, such as that on the north side of Davenport Road. Casa Loma has a good view of the harbour, four kilometres away, as it is on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mohawk River
The Mohawk River is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed October 3, 2011 river in the U.S. state of New York. It is the largest tributary of the Hudson River. The Mohawk flows into the Hudson in Cohoes, New York, a few miles north of the city of Albany.Mohawk River , The Columbia Gazetteer of North America The river is named for the of the Iroquois Confederacy. It is a major waterway in north-central New York. The largest tributary, the Schoharie Creek, accounts fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto Harbour
Toronto Harbour or Toronto Bay is a bay on the north shore of Lake Ontario, in Toronto, Ontario, Canada. It is a natural harbour, protected from Lake Ontario waves by the Toronto Islands. Today, the harbour is used primarily for recreational boating, including personal vessels and pleasure boats providing scenic or party cruises. Ferries travel from docks on the mainland to the Islands, and cargo ships deliver aggregates and raw sugar to industries located in the harbour. Historically, the harbour has been used for military vessels, passenger traffic and cargo traffic. Waterfront uses include residential, recreational, cultural, commercial and industrial sites. Description There are two harbours: the original natural harbour, today named the "Inner Harbour", and the "Outer Harbour". Access into the Inner Harbour is made via either the Western Gap or Eastern Gap. The Don River drains into the Inner Harbour from the north-east, through the Keating Channel. The makeup of the so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto Islands
The Toronto Islands are a chain of 15 small islands in Lake Ontario, south of mainland Toronto, Ontario, Canada. Comprising the only group of islands in the western part of Lake Ontario, the Toronto Islands are located just offshore from the city's downtown area, provide shelter for Toronto Harbour, and separate Toronto from the rest of Lake Ontario. The islands are home to the Toronto Island Park, the Billy Bishop Toronto City Airport, several private yacht clubs, a public marina, Centreville Amusement Park, a year-round residential neighbourhood, and several public beaches. The island community is the largest urban car-free community in North America. Public ferries operate year-round from Jack Layton Ferry Terminal, and privately operated water taxis operate from May to September. A pedestrian tunnel connects the mainland to the airport. The Toronto Islands are a popular tourist and recreational destination. Bicycles are accommodated on the ferries at no charge and can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eluvium
In geology, eluvium or eluvial deposits are those geological deposits and soils that are derived by ''in situ'' weathering or weathering plus gravitational movement or accumulation. The process of removal of materials from geological or soil horizons is called eluviation or leaching. There is a difference in the usage of this term in geology and soil science. In soil science, eluviation is the transport of soil material from upper layers of soil to lower levels by downward percolation of water across soil horizons, and accumulation of this material ( illuvial deposit) in lower levels is called illuviation. In geology, the removed material is irrelevant, and the deposit (eluvial deposit) is the remaining material. Eluviation occurs when precipitation exceeds evaporation. A soil horizon formed due to eluviation is an eluvial zone or eluvial horizon. In a typical soil profile, the eluvial horizon refers to a light-colored zone located (depending on context and literature) either at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scarborough Bluffs
The Scarborough Bluffs, also known as The Bluffs, is an escarpment in the Scarborough district of Toronto, Ontario, Canada. There are nine parks along the bluffs, with Bluffers Park being the only one with a beach. Forming much of the eastern portion of Toronto's waterfront, the Scarborough Bluffs stands above the shoreline of Lake Ontario. At its highest point, the escarpment rises above the coastline and spans a length of . History The French gave the name "Les Grands Ecores", or tall points on the shore, to the cliffs. In the 1788 Plan of Toronto by Alexander Aitken, the bluffs were simply known as the High Lands. They became known as the Scarborough Highlands in 1793 named after Scarborough, North Yorkshire. This name was chosen by Elizabeth Simcoe, who was the wife of the first lieutenant governor of Upper Canada, John Graves Simcoe. The escarpment along Lake Ontario reminded Elizabeth Simcoe of the limestone cliffs in her hometown. In her diary, she wrote, "The shore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the planet. Earth is currently in the Quaternary glaciation. Individual pulses of cold climate within an ice age are termed '' glacial periods'' (or, alternatively, ''glacials, glaciations, glacial stages, stadials, stades'', or colloquially, ''ice ages''), and intermittent warm periods within an ice age are called '' interglacials'' or ''interstadials''. In glaciology, ''ice age'' implies the presence of extensive ice sheets in both northern and southern hemispheres. By this definition, Earth is currently in an interglacial period—the Holocene. The amount of anthropogenic greenhouse gases emitted into Earth's oceans and atmosphere is predicted to prevent the next glacial period for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackish Water
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root '' brak''. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms). Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, mountain glaciers and the polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlement and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Dryas
The Younger Dryas (c. 12,900 to 11,700 years BP) was a return to glacial conditions which temporarily reversed the gradual climatic warming after the Last Glacial Maximum (LGM, c. 27,000 to 20,000 years BP). The Younger Dryas was the last stage of the Pleistocene epoch (c. 2,580,000 to 11,700 years BP) and it preceded the current, warmer Holocene epoch. The Younger Dryas was the most severe and long lasting of several interruptions to the warming of the Earth's climate, and it was preceded by the Late Glacial Interstadial (c. 14,670 to 12,900 BP). The change was relatively sudden, taking place in decades, and it resulted in a decline of temperatures in Greenland by 4~10 °C (7.2~18 °F), and advances of glaciers and drier conditions over much of the temperate Northern Hemisphere. A number of theories have been put forward about the cause, and the most widely supported by scientists is that the Atlantic meridional overturning circulation, which transports warm water fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Admiralty Lake
Admiralty Lake was a proglacial lake in the basin of what is now Lake Ontario. The shoreline of Admiralty Lake was about lower than Lake Ontario. The shoreline of Glacial Lake Iroquois, an earlier proglacial lake, was much higher than Lake Ontario's, because a lobe of the Laurentian Glacier blocked what is now the valley of the St Lawrence River. Lake Iroquois drained over the Niagara Escarpment, and down the Mohawk River. When the lobe of the glacier retreated the weight of the glacier kept the outlet of the St Lawrence River lower than the current level. As the glacier continued to retreat the region of the Thousand Islands The Thousand Islands (french: Mille-Îles) constitute a North American archipelago of 1,864 islands that straddles the Canada–US border in the Saint Lawrence River as it emerges from the northeast corner of Lake Ontario. They stretch for abo ... rebounded, and the lake filled to its current level. References Bibliography *"Nearshore Geology". A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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