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.
They found that the youngest rocks on the sea floor were at mid-ocean ridges and the oldest were further away from the ridges.
Around 200 million years of age.
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.
Sea cucumbers are found on the sea floor worldwide
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.
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.
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.
The youngest sea floor is found near ocean ridges where magma is coming up and then cooling to form new crust.
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.
The oldest rock in oceanic crust is that which is found the greatest distance from a mid-ocean-ridge.
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.
Around 200 million years in age.
Far from the mid oceanic ridge, near the continental margin (oldest oceanic rock ages 200 mya)
Sea Floor Spreading
The prominent sea floor feature found in the central Atlantic ocean is called the Mid Atlantic Ridge.
Mostly in saltwater areas, but sometimes in freshwater, on the sea floor.
Jurrasic= 206-142 Million Years Ago
the age of the rock found in subduction trenchs
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.
At the greatest distance from a mid oceanic spreading centre.
No. Sea floor trenches are found at convergent boundaries. divergen boundaries form mid-ocean ridges.
The layer that is on top that rock is the newest , the one underneath is the oldest rock.