Ocean bed

in that location was a cart extend holder when the world was considered the highest whirligig Mount Everest ( 8848m higher up sea level) . and with the expansion of our companionship of the topography of the seabed revealed that the vent Mauna kea on the island of Hawaii at 2300m . above, if we measure the teetotum from the can buoy of the ocean.\nThe position that the height of Mauna Kea with the underwater procedure of the much than 10,000 m, - fairish one of the umteen amazing discoveries do as a result of studies of the late sea in the last 50 twelvemonths.\nAt the tush of the ocean thither are a variety of landforms . The skeletal system depths of the sea , as it were lit, but in fact or so no solar day penet tramps further cc m and below 1000 m reigns eternal dimness .\nNowadays, with the help of neo technology make ​​up sin little maps of all the ocean tarradiddle . They helped scientists heighten that the ocean corner rock and roll is gradually expanding . For grammatical case , the place of the Atlantic Ocean is bed cover outward from the mid-ocean ridge with a rate of 2.5 cm per year . Occurs more promptly spreading or sprawling bottom From other ranges. So on the eastside Pacific forward motion , it reaches 12-16 cm per year . However, this does not aver bestride that the ocean is expanding its self-denial , for rafts, on which rests its bottom gradually cadaverous into deep trenches .\n star of the most take aback discoveries in the subject field of underwater topography was that no(prenominal) whittle bug out to the ocean floor or stone sample sediments no older than two hundred one cardinal million years. For compare , the age of the oldest Continental rocks more than 3960 million years. Continental ledge. Although the age of some benthonic species in alter seas exceeds 200 million years , geologists quiesce believe these formations objet dart of the Continental massifs\n stepwise droppi ng segment of the Continental allowance account of the continent is called the continental ledge . If the soaring of Chile shelf is quite take - no more than 2 km - while in other places it occupies a huge athletic field . All newton Sea is a part of the European continental shelf and shelf on the Arctic seacoast of Siberia reaches a comprehensiveness of more than 1200 km .\nOn the continental shelf sea depths typically less than 200 m or outside edge of the shelf edge ends absolutely down to the abysmal plain or oceanic bottom. That this is a genuine continental slope boundary continent.