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Why is the earth 4.6 billion years old but the oldest sea floor is only 180 millions years old?
Wiki User
∙ 8y ago
Just as new sea floor forms at mid-ocean ridges, new sea floor is forced back into the mantle at abduction zones. The oldest seafloor is at east and west the edges of the Atlantic Ocean, dating to the breakup of Pangaea.
Wiki User
∙ 8y ago
Wiki User
∙ 13y agoBecause the entire ocean floor is eventually remade as the old one sinks into the mantle of the earth
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How much is Norman Rockwell floor globe?
Millions.
On the ocean floor where is the oldest rock?
The oldest rock in oceanic crust is that which is found the greatest distance from a mid-ocean-ridge.
Why doesn't the Earth appear to move when you push down on it with your foot?
It's a visual thing. When you walk on a floor, you do indent it momentarily. The floor pushes on the house fame. The house frame pushes on the earth, which moves down momentarily. Do you have a micrometer? You might be able to measure some of the movements with that. I wouldn't bet on it, however.
Trenches are the deepest parts of the ocean floor which of the earth's four oceans hs the deepest trenches?
The Pacific Ocean has the deepest trenches.
Where does new water on earth come from?
New water comes from under the crust of the Earth. It escapes mainly through hydrothermal vents in the sea floor. ------------------------------------------------ There is a water cycle on earth that takes wet sediments deep into the mantle to be re heated and circulated back up as new sea floor. This is where the water in hydrothermal vents originates - it is NOT new water. However, there remains a possibility that some of the water emerging from the mantle has been there since the formation of the earth so some of it MAY be 'new'.
Why are the oldest part of the ocean floor no older then about 200 million years old?
The ocean is 4 billion yars old, however due to subduction, the oldest sediment found in the ocean's floor is 180 million years old.
Is the oldest ocean floor rock about 3.8 billion years old?
nos the oldester rock in tha worlds is 3twillion ears old i nose vis becuz i haz its in mi rom undir the bad
How much is Norman Rockwell floor globe?
Millions.
Where does the oldest rock take place at on the ocean floor in sea-floor spreading?
Far from the mid oceanic ridge, near the continental margin (oldest oceanic rock ages 200 mya)
Why are the oldest parts of the ocean floor no older than about 200 million years.?
Because the oldest parts reach the continental crust and then the ocean floor sinks beneath the continental crust, into the mantle.
On the ocean floor where is the oldest rock?
The oldest rock in oceanic crust is that which is found the greatest distance from a mid-ocean-ridge.
In which layer of the Earth is the ocean floor?
The crust contains the ocean floor and also the continents on Earth.
What happened when the plate motions compresses part of the crusts?
where do you expect to find the oldest rock on the ocean floor
What do you mean by earth pit?
Pits could be made indoors with a cushion and carpet floor or the earth pit which has no floor and the pit is made of earth and dirt.
Where would you expect to find the oldest rock on the oldest floor?
Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.
How old is our planet?
the biosphere reaches from the floor of the ocean to the tops of the highest mountains. all together,the biosphere is a layer blanketing the earth about 20km(12.4m) thick
How old are the oldest of the ocean floor?
Less than 200 Million years old.
