induced magnetization
Quick Summary
Geomagnetics is the study of the Earth's magnetic field, including its origin, changes over time, and how it manifests as magnetic poles and anomalies. Induced magnetization occurs when a material, like rocks, is placed in an external magnetic field and develops its own magnetic field. This induced magnetism is crucial for understanding the Earth's subsurface structure and composition.123
Remanent magnetism is the permanent magnetism found in rocks, reflecting the Earth's magnetic field orientation when the rock formed. This can happen as magnetic minerals in igneous rocks cool or when magnetic grains settle in sedimentary rocks. Geomagnetic studies use these magnetic properties to investigate phenomena like continental drift.4
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