Abstract
For some years, a French-Belgian team of archaeologists and geologists is investigating the provenance of ancient quern-stones and millstones. Their study revealed the frequent occurrence of particular coarse sandstones derived from Lower Devonian strata in the Ardenne region, known as either the textquotedblleftArkose of Haybestextquotedblright by geologists or the textquotedblleftArkose
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