Question

which observation about the Mid-Atlantic Ridge region provides the best evidence of the seafloor has been spreading over for millions of years ​

Answer 1

Magnetic stripes on the sea floor

Explanation:

The observation of magnetic stripes patterns at the region of the Mid-Atlantic Ridge galvanized the evidence that sea floor spreading has been on for several millions of years.

• Geomagnetic field of the earth is similar to that of bar magnet having the north and south pole.
• It originates from the movement of iron-nickel within the outer core.
• This geomagnetic field causes the magnetization of magnetic minerals in rock.
• When freshly formed magma is brought to the surface at the mid oceanic ridge area, the prevailing magnetic field causes the magnetic minerals in the magma to cool in such a way that they align their domains to that of the field.
• The magnetic field of the earth can reverse and take different geometry. Sometimes, its intensity is very strong and at other times it is weak.
• The magnetic minerals in melts bear these records.
• As new materials are brought up, they get magnetized.

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Sea floor spreading brainly.com/question/9912731

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