The process that causes the rock pattern illustrated in the image is plate divergence, this provides evidence by dating the rocks of the underwater crust.
The map shows the region of the Atlantic Ocean in which the different ages in which the rocks that make up the seafloor originate are seen, which are:
- A. 118.1 - 180.0 million years before present.
- B. 56.0 - 118.0 million years before present.
- C. 20.2 - 56.0 million years before present.
- D. 0 20,2 million years before present.
In the region shown the divergence of the plates is evident:
- North: North American Plate and Eurasian Plate.
- South: South American plate and African plate.
Plate divergence is a geological phenomenon in which convective currents cause the Earth's crust to fracture and the magma from the mantle to be released outside.
According to the above, the age of the rocks in the middle of the Atlantic is newer because it has been formed with the expulsion of magma from the mantle, while the rocks located at the edges are older. After all, they are located in the middle of the plates.
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