Paleomagnetic dating is based on the fact that history of absolute dating

It interacts with the atmosphere, the biosphere, the deep mantle and even the inner core.

The Earth's molten core has electric currents flowing through it.The geomagnetic field changes on frequencies of 10s of microseconds (radio waves) to millions and perhaps billions of years.Direct observations contribute to our knowledge of field behavior for the last few centuries, but on longer times scales we need to use paleomagnetic and archaeomagnetic techniques.The Earth's magnetic core is generally inclined at an 11 degree angle from the Earth's axis of rotation.Therefore, the magnetic north pole is at approximately an 11 degree angle from the geographic north pole.

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