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The distance and rate at which they are growing from "mid-ocean ridges" from which molten rock (magma) rises from the Earth's mantle. Younger rock is closest to these ridges while older rock is further. The old rock will eventually be recycled into the mantle via a process known as "subduction", marked by trenches in the ocean floor.
- source: Essentials of Geology 3rd Edition (Marshak, 42)
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How does sea floor depth change with age?
The ocean floor doesn't sink from just age alone. As time passes, the plates under the ocean floor continue to move, and eventually they sink under the Earth's mantle in the process of subduction.
What three pieces of evidence for Wegener's theory came from the sea floor?
seafloor spreading, age of the sea floor and ocean trenches.
How old is the sea floor?
It varies from a maximum age of 200 million years to the newly created sea floor at the mid-ocean ridges.
How do moving sediments affects the channel of a stream?
The sediments build up on the floor of the stream, ocean, river, or lake and causes the water to lower.
What is the topography of the ocean floor?
The topography of the ocean floor
Which landforms are on the ocean floor?
which landforms are on the ocean floor
Is ocean floor smooth?
The ocean floor is not smooth.The ocean floor is made up of rocks, ledges and ditches.
What were found on the ocean floor?
blank are found on the ocean floor
What are the plants and animals that live on the ocean floor?
marine organisms
When lava flows from fissures on the ocean floor at places where tension is causing the ocean floor to be pulled apart new is?
Ocean floor
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.
Is the floor near the mid ocean old?
No. The newest ocean floor is at the mid-ocean ridge.
