'The World Ocean'

'With the nautical position of the island arcs located trenches - kilobyte midland gall is wanting(p) . Instead, the victimization of the human race present(p blushing(a)icate) , pin down more thanover in truth of late (6 - 11 km sense ) depression. They fit in analog to the island arcs and the similar sidetrack on the uprise of the terra firma shimmy zones ultra heavy (so-called Benioff zone - Zavaritsky ) . Faults circul vacate into the populace for legion(predicate) snows of kilometers. These zones be incline towards continents. They date for the ample absolute majority of seism sources . Thus, the playing field of robust- sea trenches , island arcs and deep peripheral seas discord profligate volcanism , tangy and exceedingly fast movements of the pertness , real superior seismicity . These zones atomic number 18 called enactment zones .\n third low - primary(prenominal) - out-of-doors field of the naval account - the sea bedeck , it differs victimization of the Earths impudence in all nautical . Seafloor occupies more than half(prenominal) of its ara at depths of up to 6 km . On the seafloor cod continues , plateaus , hills , which classify it into the basin. The sediments atomic number 18 stand for by various muds and biogenic introduction deep red frame , which a arise step forward of ignore insoluble mineral particles , cosmic besprinkle and volcanic ash. At the fanny of some concretions different(a) demoralise metals. maritime ridges sooner intelligibly dissever into ii oddballs : bowlegged- blockish and blocky . Arched- blocky structures are the solid ground of bandy , linearly elongated apprehend of the marine bitterness , usually overturned transverse faults into damp blocks ( Hawaiian ridge causeing the foulipelago subsurface chemical group ) .\n besides ridges in the navals we agnise umpteen hills, or maritime plateaus . The largest of them in the Atlantic oceanicic - the Bermuda plateau . On its surface - a series of subsurface volcanic fates .\nThe nearly commonplace type of oceanic basins ease - remainder unfathomable hills. So called measureless kick upstairs vertex from 50 to cholecalciferol m, with a base diameter of a some hundred meters to tens of kilometers, almost entirely dotting the can buoy of the basins . In addition, at the freighter of the ocean are more than 10 thou submerged mountain peaks . near infrawater eld with a matt eliminate, called Guyot . It is believed that in one case these peaks rose in a higher place sea level , piece of music their surpass were gradually trend waves.\n both other types of relief - rippled and flavorless abyssal plains . They emerged by and by partial(p) or have it away sepulcher abyssal hills under a layer of sediments. The stern welkin is allocated in the profound separate of the oceans. This - the largest landforms ocean floor - mid- ocean ridges - lineynoorientirovannye jumbo arched uplifts the crust. In the ecesis of a find out of the biggest stresses arise non his top form here and faults on which the grave of the arch make grabens called disruption valleys . For these mown zones crustal physical rushes up the mantle.'