Thermoluminescence dating using fine grains from pottery

Posted by / 06-Jan-2018 06:19

Thermoluminescence dating using fine grains from pottery

We removed about 3 mm of the pottery’s outer surface to eliminate the beta dose contamination from the soil. In the next step, we took this time the precipitant with a small amount of acetone.

The next step is to obtain a quantity of powder, about 250 mg, through the drill within the sample; after that we added acetone, about 60 cm, to the sample and waited for 2 min. We put, using micropipette, 3 m L of the solution in each of the glass tubes (1 cm of diameter and 6 cm of height).

The time elapsed since sedimentation, i.e., Age = Paleodose Annual Dose In practice, the paleodose is calculated by measuring the luminescence intensity in the natural mineral and regenerate the equivalent luminescence intensity by artificial radiation dose from a calibrated beta source attached to the TL/OSL instrument.

For calculating the annual dose rate, the elemental concentration of U, Th and K (by XRF or ICP-MS) in the sediment and water content in the sediment are required.

A) Optically Stimulated Luminescence (OSL) Dating a) Blue Light Stimulated Luminescence (BLSL) Dating using Blue light emitting diodes b) Infra-red Stimulated Luminescence (IRSL) Dating using infrared diodes Luminescence dating is based on the principle that certain naturally occurring minerals (e.g.

quartz, feldspar), which are previously exposed to ionizing radiation, will emit light (luminescence) when they are thermally or optically stimulated.

The classification of ceramics based on typology is one of useful methods, but only when applied to whole or reconstructed objects [1, 2].

To reach this goal many techniques were applied, since the initial ceramics study by Sayre and Dodson [6], such as X-ray fluorescence (XRF) [7, 8], proton induced X-ray emission (PIXE) [9, 10], and neutron activation analysis (NAA) [3, 5, 11, 12].

We applied in our laboratory most of these techniques to study archaeological objects.

The main aim of our study was to prove to archaeologists the advantage of applying physical techniques and present the effectiveness of the combination of some methods in their studies such as dating of the sites and the provenance studies of ancient ceramics.

C.) and the remaining three samples come from Mar-Takla archaeological site fairly representative of the Byzantine ceramics.

We have selected four fragments from Tel Jamous site to determinate their age using thermoluminescence (TL) method; the results revealed that the date assigned by archaeologists was good.

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Analysis of archaeological ceramics can confirm the information recorded in historical documents, such as trade routes linking populations of different areas, and help to find out the chronology of events.

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