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Earth characteristics
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Earth material properties
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Magnetism
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Remanent magnetism
Magnetic characteristic of rocks and deposits reflective of the earth's magnetic field at the time of the deposit's formation.
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Introduction to potential fields: Magnetics
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Explanation of the Earth's magnetic field and how USGS measures it. Defines magnetic anomaly, induced and remanent magnetism in rocks, and describes magnetic anomaly maps.
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