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Concept
Bassin des Mines
Résumé
The Minas Basin (Bassin des Mines) is an inlet of the Bay of Fundy and a sub-basin of the Fundy Basin located in Nova Scotia, Canada. It is known for its extremely high tides.
The Minas Basin forms the eastern part of the Bay of Fundy which splits at Cape Chignecto and is delineated by the massive basalt headlands of Cape Split and Cape d'Or. The Minas Basin is divided into four sections: (1) the Minas Channel, from the shortest line between Cape Chignecto and the Annapolis Valley Shore to Minas Passage, between Parrsboro and Cape Blomidon; (2) Central Minas Basin, from Minas Passage to the mouth of Cobequid Bay, the shortest line point between Economy and the Noel Shore; (3) Cobequid Bay which extends to the mouth of the Salmon River; and (4) the Southern Bight, from the mouth of the Avon River to the shortest line between Cape Blomidon and the Noel Shore.
Several large rivers drain into the Minas Basin: Shubenacadie River, Cornwallis River, Avon River, Gaspereau River, and Salmon River. Lesser rivers include Canard River, Diligent River, Farrell River, and Debert River. Along the northern edge of the Minas Basin lies a chain of intermittent high-cliffed basaltic bluffs and islands called the Basalt Headlands.
On the northern shore of the Minas Basin, around the Gaspereau River, and around the Salmon River, extensive areas of farmland have been created using dykes with sluices (one-way flow control valves), a form of polderisation.
Burntcoat Head, located on the "Noel Shore" along the south side of the Minas Basin, is the location of the highest tidal range ever recorded, exceeding (during a spring tide only) and has one of the highest average tidal ranges every day. The waters of Minas Bay exchange with the main part of the Bay of Fundy through the Minas Channel which flows between Cape Split and Cape Sharp, creating extremely strong tidal currents and, near Cape d'Or, the turbulent collision of currents known as the Dory Rips. The water in Minas Basin is a dense and nearly opaque reddish brown due to large amounts of suspended silt which are continually churned by tidal currents.
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