Dating69 net

Posted by / 11-Sep-2017 20:05

The most frequent problems are three: (i) The exposure of bricks to high temperatures due to accidental fires occurred in the past can cause the “zeroing” of the luminescence signal and thus the underestimation of the real age; (ii) architectural modifications can distort the dose rate and subsequent age due to changes in the surrounding radioactivity received by the brick; and (iii) reused bricks will provide overestimated ages as the firing occurred some time before the reuse [5,6,7,8].Luminescence dating can also be used in other ceramic materials such as tiles [9,10].Ceramic materials used in buildings are usually fired bricks, tiles, and less frequently pavements and pipes.

However, some problems can arise from the use of bricks for luminescence dating.The technique can also overestimate the age of a structure because of the same two reasons given above.In any case, the combined use of both techniques in wooden materials helps to recognize reused material and to identify construction phases [3].Recent studies performed on several kinds of mortars, fired bricks, mud-bricks, and even stone surfaces have shown that it is possible to date them.Both radiocarbon and luminescence dating have been the most frequently used techniques but others such as archaeomagnetism can also be used in some cases.

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Heating the minerals (by TL) releases the trapped signal, allowing an estimate of the accumulated charge and the time elapsed since the brick was fired to be placed as part of a structure.

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