Dating prehistoric paintings

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When this matter is heated to 275°C, the trapped electrons revert to their fundamental level by emitting radiation (luminescence peak).

The technique consists in subjecting the sample to additional known irradiation doses, in order to calculate the paleodose (which is to say the irradiation that the sample was exposed to during the period of time since it was last heated (for flint), or since its formation (for calcite).

The calibration curves vary according to research progress and are regularly revised (Cal Pal-2007, Int Cal09, Intcal13; figure 2).The results are perfectly consistent, both in relation to each other and in relation to the age of the black paintings (Cuzange Unfortunately, this experiment did not silence the antagonists, who were taken off guard and advanced improbable hypotheses to continue to refute the age of the paintings from Chauvet Cave (Combier, Jouve, 2012).When solid matter such as flint or calcite is bombarded by cosmic rays, electrons are trapped in high energy levels.In sum, the classical method of charcoal preparation, called ABA (three steps consisting of an acid treatment, then basic, then acid again) has now been replaced by a variant known as ABOx-SC (an oxidation stage and step combustion are added to the acid and basic treatment).In nearly all cases, the ABOx-SC procedure yields dates 3000 to 5000For bone dating, a new method of collagen extraction and purification has also been developed.

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