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200 million
Alanis Price
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Rocks in ocean crust are as old as how many years?
200 million.
How old are rocks in ocean crust?
The age of rocks in the ocean crust depends on where the rocks are collected. Scientists collected rock samples from the sea floor. They found out that rock samples that were closer to mid-ocean ridges were younger than the samples farther away from the ridges. So pretty much you could get rocks that are thousands of years old to over millions of year old.
Is ocean crust or landform crust yonger?
When comparing an oceanic crust and a landform crust, the oceanic crust will be much younger. Typically, an oceanic crust is less than 200 million years old.
Where on the ocean floor would you find old rocks?
The oldest oceanic crust is generally found at the largest distance from the spreading centre where it was generated. the best place to go at the moment would be the pacific ocean south east of Japan, where there is Jurassic ocean crust preserved. Oceanic crust of the same age can be found East of the United States of America and west of Africa as well but there one finds much less because of slower spreading rates. These rocks are usually buried by hundreds of meters of sediments and are thus mostly not directly accessible. Very old rocks can be found on the ocean floor, when icebergs carry gravel and stones derived from old continental crust (like large parts of Skandinavia) onto the ocean and drop them as they melt (drop stones).
What is older the continents or the ocean floor?
On average, continents are older than ocean basins. Due to the action of plate tectonics, ocean crust is being formed and destroyed continuously. The oldest oceanic crust is about 200 million years old, whereas continents, which are less dense than oceanic crust and tend not to be subducted into the mantle, can be more than 3,000 million years old in places.
Rocks in ocean crust are as old as years?
200 million
Rocks in ocean crust are as old as how many years?
200 million.
Rocks in ocean crust are as old as?
200 million
How old are rocks in ocean crust?
The age of rocks in the ocean crust depends on where the rocks are collected. Scientists collected rock samples from the sea floor. They found out that rock samples that were closer to mid-ocean ridges were younger than the samples farther away from the ridges. So pretty much you could get rocks that are thousands of years old to over millions of year old.
Are oceanic rocks billion years old?
No. Oceanic crust is recycled into the mantle through a process called subduction and new ocean floor is formed at mid-ocean ridges. None of the ocean floor is more than about 180 million years old. Some rocks on the continents are billions of years old.
Which has the younger rock the continental crust or oceanic crust?
The youngest rocks will be formed from cooled magma. Therefore volcanism, either on the continental crust or oceanic crust will create the youngest rocks.
What does ocean crust mean in science?
The oceanic crust is the part of the earth's crust that is below the ocean. The rock that makes up the oceanic crust is about 200 million years old.
Rocks in continental crust are as old as years.?
44 million
Rock in ocean crust are as old as how many years?
200 million.
How old are the oldest rocks of the ocean?
Less than 200 Million years old.
Where are the oldest rocks located in the ocean crust?
The oldest rocks on the ocean floor would be those at the colliding edge of the plate boundary.Answer 2: The oldest of all oceanic rocks are on the Asian side of the pacific plate.
Why havent older ocean rocks been discovered?
Oceanic crust is eventually destroyed in subduction zones. Although oceanic crust has been forming on Earth for over 4 billion years, all of the sea floor older than about 200 million years has been recycled by plate tectonics. Continental crust is not subducted and destroyed, so very old continental rocks have survived.
