Characterization of an ESR geochronological dating center in flints

A study of the ESR signal complex in flints was used to examine its origin within the mineral. One component of the ESR spectrum, known to be a trapped hole, was confirmed to be a structural defect of the silica fraction of flint. The relationship of this center to that seen in natural quartz and glass is discussed. The defect has importance for geochronological direct-dating as it is shown to anneal and regenerate in a systematic manner in flints.