archaeomagnetism - définition. Qu'est-ce que archaeomagnetism
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Qu'est-ce (qui) est archaeomagnetism - définition

ESTABLISHING THE AGE OF ARCHAEOLOGICAL ARTIFACTS BASED ON REMANENCE MAGNETISM
Archaeomagnetic; Archaeomagnetism

archaeomagnetism         
¦ noun magnetism possessed by components of clay and rocks which have in the past been heated, especially as studied in a method of geological or archaeological dating.
Derivatives
archaeomagnetic adjective
Archaeomagnetic dating         
Archaeomagnetic dating is the study and interpretation of the signatures of the Earth's magnetic field at past times recorded in archaeological materials. These paleomagnetic signatures are fixed when ferromagnetic materials such as magnetite cool below the Curie point, freezing the magnetic moment of the material in the direction of the local magnetic field at that time.

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Archaeomagnetic dating

Archaeomagnetic dating is the study and interpretation of the signatures of the Earth's magnetic field at past times recorded in archaeological materials. These paleomagnetic signatures are fixed when ferromagnetic materials such as magnetite cool below the Curie point, freezing the magnetic moment of the material in the direction of the local magnetic field at that time. The direction and magnitude of the magnetic field of the Earth at a particular location varies with time, and can be used to constrain the age of materials. In conjunction with techniques such as radiometric dating, the technique can be used to construct and calibrate the geomagnetic polarity time scale. This is one of the dating methodologies used for sites within the last 10,000 years. The method was conceived by E. Thellier in the 1930s and the increased sensitivity of SQUID magnetometers has greatly promoted its use.