Hur lång är gulf
The term may refer to: Gulf of Aden, off the southwestern corner of the Arabian Peninsula. After both platforms were submerged, the formation of carbonates and evaporites has characterized the geologic history of these two stable areas. Although the Spanish voyage of Christopher Columbus was credited with the discovery of the Americas by Europeans, the ships in his four voyages did not reach the Gulf of Mexico.
This flooded the opening basin to create an enclosed marginal sea. It has been called the "Jacuzzi of Despair". The rifting that created the basin was associated with zones of weakness within Pangaea, including sutures where the Laurentia , South American , and African plates collided to create it.
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A gulf in geography is a large bay that is an arm of an ocean or sea. The Yucatán Platform was emergent until the mid-Cretaceous. To the east, the stable Florida Platform was not covered by the sea until the latest Jurassic or the beginning of Cretaceous time. In , Erik Cordes of Temple University and others discovered a brine pool 3, feet 1, m below the gulf's surface, with a circumference of feet 30 m and 12 feet 3.
Its floor consists of sedimentary rocks and recent sediments. Because it is warmer than the surrounding water 65 °F or 18 °C compared to 39 °F or 4 °C , animals are attracted to it but cannot survive once they enter it. Initially, the combination of crustal stretching and cooling caused about 5—7 km 3. The International Hydrographic Organization defines the southeast limit of the Gulf of Mexico as: [ 7 ].
At this point, sufficient circulation with the Atlantic Ocean was established that the deposition of Louann Salt ceased. In Hernán Cortés took part in the conquest of Hispaniola and Cuba, receiving a large estate of land and indigenous slaves for his effort. Almost half of the basin consists of shallow continental shelf waters. Most of the basin was rimmed during the early Cretaceous by carbonate platforms, and its western flank was involved during the latest Cretaceous and early Paleogene periods in a compressive deformation episode, the Laramide Orogeny , which created the Sierra Madre Oriental of eastern Mexico.
Leaflet Avståndskalkylator Med avståndskalkylatorn kan du enkelt beräkna avståndet mellan olika platser i världen. This thinning created a broad zone of transitional crust, which displays modest and uneven thinning with block faulting and a broad zone of uniformly thinned transitional crust, which is half the typical kilometer 25 mi thickness of continental crust. However, this first voyage of is widely disputed, and many historians doubt that it took place as described.
It was at this time that rifting first created a connection to the Pacific Ocean across central Mexico and later eastward to the Atlantic Ocean. The subsiding transitional crust was blanketed by the widespread deposition of Louann Salt and associated anhydrite evaporites. Not all geological features which could be considered a gulf have "Gulf" in the name, for example the Bay of Bengal or Arabian Sea.
List. The site cannot sustain any kind of life other than bacteria , mussels with a symbiotic relationship , tube worms and certain kinds of shrimp. Particularly during the Cenozoic, a time of relative stability for the coastal zones, [ 15 ] thick clastic wedges built out the continental shelf along the northwestern and northern margins of the basin. Before the Late Triassic, the area consisted of dry land, which included continental crust that now underlies Yucatán , within the middle of the supercontinent Pangaea.
In he accompanied Diego Velázquez de Cuéllar , an aide of the governor of Hispaniola, in his expedition to conquer Cuba. As early as the Maya civilization , the Gulf of Mexico was used as a trade route off the coast of the Yucatán Peninsula and present-day Veracruz. Avståndskalkylator - beräkna avstånd online! It was created by the collision of continental plates that formed Pangaea. Because of its narrow connection to the Atlantic Ocean, the gulf experiences very small tidal ranges.
The Southern U. The Gulf of Mexico took shape approximately million years ago as a result of plate tectonics. The subsidence was the result of a combination of crustal stretching, cooling, and loading. Instead, the Spanish sailed into the Caribbean around Cuba and Hispaniola.
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The size of the gulf basin is approximately 1. Second, as rifting progressed through early and middle Jurassic times, the continental crust was stretched and thinned. The first exploration of the site was unmanned, using Hercules and in a team of three used the deep-submergence vehicle Alvin. Cox, this mountain range was breached in the late Cretaceous by the formation of the Mississippi Embayment. Vespucci is purported to have followed the coastal land mass of Central America before returning to the Atlantic Ocean via the Straits of Florida between Florida and Cuba.
Bara ange önskad startpunkt och destination i sökfunktionen så får du kortaste avståndet (fågelvägen) mellan de två, färdvägen (reseplanerare) och all viktig information. The consensus among geologists [ 4 ] [ 8 ] [ 9 ] is that before the late Triassic , the Gulf of Mexico did not exist. Because subsidence occurred faster than sediment could fill it, the basin expanded and deepened. During the late Jurassic, continued rifting widened the basin and progressed to the point that seafloor spreading and formation of oceanic crust occurred.
Later, loading of the crust within the basin and adjacent coastal plain by the accumulation of kilometers of sediments during the rest of the Mesozoic and all of the Cenozoic further depressed the underlying crust to its current position about 10—20 km 6. The Gulf of Mexico is 41 percent continental slope , 32 percent continental shelf , and 24 percent abyssal plain with the greatest depth of 12, feet in the Sigsbee Deep.
This land lay south of a continuous mountain range that extended from north-central Mexico, through the Marathon Uplift in west Texas and the Ouachita Mountains of Oklahoma , and to Alabama where it linked directly to the Appalachian Mountains. The volume of water in the basin is roughly 2. During the late Jurassic through early Cretaceous, the basin experienced a period of cooling and subsidence of the crust underlying it.
First, there was a late Triassic—early Jurassic phase of rifting during which rift valleys formed and filled with continental red beds.