Palaeomagnetism and high‐resolution dating of ceramic kilns in Thailand: A progress report

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Abstract
The production of high‐temperature stoneware ceramics began in Thailand some time after AD 900. It developed into a large‐scale industry following a change from in‐ground to surface kilns between the thirteenth and fifteenth centuries, before declining in the sixteenth and seventeenth centuries. High‐resolution dating of the industry is difficult, since historical references, inscriptions on ceramics, and associated coins are sparse. Direct dating methods, like radiocarbon and thermoluminescence, have an accuracy of one or two centuries, and are generally suitable for dealing with questions on a broad time‐scale. Palaeomagnetic measurements on cores from kiln walls give data on the direction of the earth's magnetic field at the time of last firing, and appear capable of resolving intervals of about twenty‐five years, within a sequence, for parts of the time‐scale. Changes in magnetic direction are, however, irregular in time and place, and other methods must be used to calibrate the palaeomagnetic record. Stratigraphy, kiln design, ceramic styles and chemical composition are being combined with palaeomagnetism, radiocarbon and thermoluminescence dating to elucidate the history of the industry.

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