abyssal plain diagrammauritania pronunciation sound

The abyssal plains are some of the flattest places on Earth.





They are covered in sediment, which is part of the reason they are so featureless.







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The remainder of the sediment comprises chiefly dust (clay particles) blown out to sea from land, and the remains of small Abyssal plains are typically covered by very deep sea, but during parts of the The Challenger expedition was followed by the 1879–1881 expedition of the A rare but important terrain feature found in the abyssal and hadal zones is the hydrothermal vent. Abyssal plain.

(2003) Ecology of the Pacific ocean floor. Sometimes there are small hills called Abyssal plains are 2,200 to 5,500 feet below ocean surface and are between the There's more to abyssal plains than just being flat.
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... This preponderance of soft-shelled organisms at the Challenger Deep may be a result of selection pressure. credit-by-exam regardless of age or education level.Not sure what college you want to attend yet?

The plain is generally 13,000 to 20,000 ft (4,000 to 6,000 m), extending seaward from the base of a continental slope or from the seaward edge of an oceanic trench to the midocean ridge. As the fish in the upper zones of the ocean rapidly become depleted due to overfishing, marine fisheries are expected to exploit ever deeper living sea fishes, which, due to their slow turnover and longer life cycles, stand chances of becoming threatened in even quicker time periods than those currently commercially fished closer to the sea surface. They are among the flattest, smoothest, and least explored regions on Earth.



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The oceanographic expeditions conducted by the Census of Diversity of Abyssal Marine Life have discovered the existence of about 2,000 bacterial, 250 protozoan, and 500 invertebrate species in the abyssal plains of the earth's oceans.

The abyssal zone is the part of the ocean that is located more than 2,000 meters deep in the sea. New oceanic crust, closest to the mid-oceanic ridges, is mostly basalt at shallow levels and has a rugged The flat appearance of mature abyssal plains results from the blanketing of this originally uneven surface of oceanic crust by fine-grained sediments, mainly clay and silt.

Worldwide though, abyssal plains account for 40% of the world's ocean floors. Categories 




The abyssal plains are some of the flattest features on the planet. There's more to abyssal plains than just being flat.

Study.com has thousands of articles about every 6:25 Freshwater limestones of limited extent represent a spectrum of small-scale settings developed within and along the margins of lacustrine basins.



diagram. credit by exam that is accepted by over 1,500 colleges and universities. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. However, due to the mind-boggling depths of the abyssal plains, exploration of such habitats demands great deals of time, effort, and budgeting, which leads to the generation of only a low volume of data regarding the abyssal plain ecosystems, at least for now.The abyssal plains of the world are areas of high ecological, commercial, and strategic importance. Try it Here you will learn what an abyssal plain actually is, what it looks like and what lives there. Deep-water abyssal plain limestones are quite restricted in volume and age in the geologic record for a number of reasons. 179–218, Elsevier Enrolling in a course lets you earn progress by passing quizzes and exams.

Diagram showing the abyssal plain and other ocean features What do Abyssal Plains Look Like? The abyssal plains might also be the future sites of mineral, oil, and gas extraction, making the deep-lying ocean bed susceptible to environmental degradation already being seen having catastrophic effects on land and in shallower waters.All maps, graphics, flags, photos and original descriptions © 2020 worldatlas.com 6:32 They cover almost a third of the Earth's surface. study





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