Gulf of Mexico
| Gulf of Mexico ： ウィキペディア英語版|
The Gulf of Mexico ((スペイン語:Golfo de México)) is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. The U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida border the Gulf on the north, which are often referred to as the "Third Coast" in comparison with the U.S. Atlantic and Pacific coasts, or sometimes the "south coast", in juxtaposition to the Great Lakes region being the "north coast."
The Gulf of Mexico formed approximately 300 million years ago as a result of plate tectonics.〔Huerta, A.D., and D.L. Harry (2012) ''Wilson cycles, tectonic inheritance, and rifting of the North American Gulf of Mexico continental margin.'' Geosphere. 8(1):GES00725.1, first published on March 6, 2012, 〕 The Gulf's basin is roughly oval and is approximately wide and floored by sedimentary rocks and recent sediments. It is connected to part of the Atlantic Ocean through the Florida Straits between the U.S. and Cuba, and with the Caribbean Sea (with which it forms the American Mediterranean Sea) via the Yucatan Channel between Mexico and Cuba. With the narrow connection to the Atlantic, the Gulf experiences very small tidal ranges. The size of the Gulf basin is approximately 615,000 sq mi (1.6 million km2). Almost half of the basin is shallow continental shelf waters. The basin contains a volume of roughly 660 quadrillion US gallons (600,000 cu mi; 2.5 million km3).〔(【引用サイトリンク】title=General Facts about the Gulf of Mexico )〕
The International Hydrographic Organization defines the southeast limit of the Gulf of Mexico as follows:
A line joining Cape Catoche Light () with the Light on Cape San Antonio in Cuba, through this island to the meridian of 83°W and to the Northward along this meridian to the latitude of the South point of the Dry Tortugas (24°35'N), along this parallel Eastward to Rebecca Shoal (82°35'W) thence through the shoals and Florida Keys to the mainland at eastern end of Florida Bay, all the narrow waters between the Dry Tortugas and the mainland being considered to be within the Gulf.
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