Information for archaeomagnetists Information for Archaeomagnetists Sampling

Archaeomagnetism is the investigation of archaeological sites or objects with geophysical methods based on the interaction between magnetic minerals of the archaeological object and the Earth's magnetic field. The major applications/research topics of archaeomagnetism are studies of the geomagnetic field as recorded by the magnetic minerals of the archaeological material. This geomagnetic information is used to construct secular variation curves,  being the main topic of the AARCH training network. Another application are magnetic prospection surveys (magnetic mapping) of buried archaeological objects.

Baked material, such as baked clay, bricks and tiles are used to obtain direction and intensity of the ancient geomagnetic field during archaeological periods of time. After precise determination of declination, inclination and intensity a reliable date of the archaeological site can be obtained from secular variation curves. Beside the aspect of archaeomagnetic dating, secular variation master curves from different regions (area of about 250 000 km2) yield valuable information about the dynamics of the Earth's magnetic field of the past.