Abstract
The dawn of archeomagnetic dating
Highlights
Archeomagnetism relies mainly on the analysis of the magnetic properties of archeological baked-clay artifacts, such as the elements of fired structures, bricks, tiles, or pottery
The goal is to better describe and model regional and/or global geomagnetic field behavior on time scales ranging from tens of years to millennia [e.g., Constable and Korte, 2015, Korte et al, 2019]
The use of geomagnetic secular variation in archeological practices, including volcanology, has its roots very early in the history of paleomagnetism. This manuscript traces the applications explored by Swiss and French paleomagnetists at the beginning of the 20th century, between the seminal works of Giuseppe Folgheraiter and Emile Thellier, with a particular focus on archeomagnetic dating
Summary
Archeomagnetism relies mainly on the analysis of the magnetic properties of archeological baked-clay artifacts, such as the elements of fired structures (floors and walls of all types of kilns), bricks, tiles, or pottery. Depending on the nature of these artifacts, found displaced or originating from the place of their firing, it is possible to determine the direction and/or intensity of Earth’s magnetic field that prevailed at the time and place of their firing/cooling These data allow researchers to compile regional geomagnetic secular variation curves or to add to existing curves as new archeomagnetic results of different ages are acquired. The use of geomagnetic secular variation in archeological practices, including volcanology, has its roots very early in the history of paleomagnetism This manuscript traces the applications explored by Swiss and French paleomagnetists at the beginning of the 20th century, between the seminal works of Giuseppe Folgheraiter and Emile Thellier, with a particular focus on archeomagnetic dating. Their writings have proven to be modern, in line with the approach followed by today’s archeomagnetists
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