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As Pangea split apart, the Atlantic Ocean and Gulf of Mexico opened.Louisiana slowly developed, over millions of years, from water into land, and from north to south.
The history of the formation of these rocks can be found in D. The youngest parts of the state were formed during the last 12,000 years as successive deltas of the Mississippi River: the Maringouin, Teche, St.
Bernard, Lafourche, the modern Mississippi, and now the Atchafalaya.
The Mississippi River flows along a ridge formed by its own natural deposits (known as a levee), from which the lands decline toward a river beyond at an average fall of six feet per mile (3 m/km).
The alluvial lands along other streams present similar features.
The higher and contiguous hill lands of the north and northwestern part of the state have an area of more than 25,000 square miles (65,000 km). The elevations above sea level range from 10 feet (3 m) at the coast and swamp lands to 50 and 60 feet (15–18 m) at the prairie and alluvial lands. The Louisiana Coastal Protection and Restoration Authority (CPRA) spends around $1 billion per year to help shore up and protect Louisiana shoreline and land in both federal and state funding.), the Tickfaw, the Natalbany River, and a number of other smaller streams, constituting a natural system of navigable waterways, aggregating over 4,000 miles (6,400 km) long.
In the uplands and hills, the elevations rise to Driskill Mountain, the highest point in the state at only 535 feet (163 m) above sea level. The state also has political jurisdiction over the approximately 3-mile (4.8 km)-wide portion of subsea land of the inner continental shelf in the Gulf of Mexico.Much of the state's lands were formed from sediment washed down the Mississippi River, leaving enormous deltas and vast areas of coastal marsh and swamp.These contain a rich southern biota; typical examples include birds such as ibis and egrets.The oldest rocks are exposed in the north, in areas such as the Kisatchie National Forest.The oldest rocks date back to the early Cenozoic Era, some 60 million years ago.Before the American purchase of the territory in 1803, the current Louisiana State had been both a French colony and for a brief period, a Spanish one.Tags: Adult Dating, affair dating, sex dating