IGNOU BGYET 147 2026 - Marine magnetic anomalies

Question

Marine magnetic anomalies

19 Jan 2026

Answer :

Word Count : 278

Marine magnetic anomalies are variations in the Earth's magnetic field recorded on the ocean floor. These anomalies are primarily due to the differing magnetic properties of basaltic rocks formed at mid-ocean ridges. As magma rises and solidifies at these ridges, the iron-rich minerals in the basalt align with the Earth's magnetic field at that time, recording

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