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The oldest in-situ oceanic lithosphere is found at lithospheric subduction zones, where oceanic crust is being drawn into the mantle. These would normally be the point furthest away from its point of origin at the mid-ocean ridge.

However the oldest remnant of oceanic crust found on earth dates from the early Archean when the lithosphere began to develop and are a product of obduction (where slivers of oceanic crust are thrust onto a continental crustal plate rather than below them). An example would be the Jamestown Ophiolite Complex of the Barberton greenstone belt in South Africa which formed approximately 3.5 billion years ago.

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โˆ™ 2011-11-12 10:03:39
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Q: Where is the oldest sea floor found?
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What evidence did scientist find for sea floor spreading?

They found that the youngest rocks on the sea floor were at mid-ocean ridges and the oldest were further away from the ridges.


How old are the oldest rocks found on the sea floor?

Around 200 million years of age.


How old is the oldest sea floor?

like 1,000,000,000,000


Is the age of the sea floor the same age of the continents?

No. The sea floor is much younger than the continents. The oldest sea floor is about 200 million years old. The continents are billions of years old.


What is the niche of sea cucumbers?

Sea cucumbers are found on the sea floor worldwide


How did harry hess find out that the sea floor was spreading?

He used a navy ship to sound the sea floor. He found out magma was coming out of the mantle and into the sea floor.


Where are the oldest layers of rock on the sea floor?

The oldest layers of sea floor would exist at the bottom of the Marianas Trench, where oceanic plate subduction is occurring. The subducting oceanic plate is less than 200 million years in age.


How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?

The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.


Where is the youngest sea floor found?

The youngest sea floor is found near ocean ridges where magma is coming up and then cooling to form new crust.


Why is the earth 4.6 billion years old but the oldest sea floor is only 180 millions years old?

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.


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.


Where are deep sea crabs found?

On the ocean floor


Where is the oldest rock found on the ocean floor?

The oldest rocks on the ocean floor are those that are being subducted under less dense crust and into the mantle at convergent plate margins.


How old are the oldest rock of the Atlantic sea floor?

Around 200 million years in age.


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)


Which theory explains why rocks found on the ocean floor are younger than those found on continents?

Sea Floor Spreading


What prominent sea floor feature is found in the central Atlantic ocean?

The prominent sea floor feature found in the central Atlantic ocean is called the Mid Atlantic Ridge.


Where are sea sponge found?

Mostly in saltwater areas, but sometimes in freshwater, on the sea floor.


How old are the oldest rocks of the Atlantic sea floor?

Jurrasic= 206-142 Million Years Ago


Which property of the rock found on the ocean floor supports the theory of sea floor speading?

the age of the rock found in subduction trenchs


What is the oldest thing ever?

Posidonia sea grass meadow is the oldest thing in the world. This 100,000 year old meadow is found in the protected waters in the Mediterranean Sea.


Where would you expect to find the oldest rock on the sea floor?

At the greatest distance from a mid oceanic spreading centre.


What kind of boundary is sea floor spreading found?

spreading boundary


Are Sea floor trenches caused by divergent boundaries?

No. Sea floor trenches are found at convergent boundaries. divergen boundaries form mid-ocean ridges.


How can scientist tell the age of rocks on the sea floor?

The layer that is on top that rock is the newest , the one underneath is the oldest rock.

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