Datarea radiocarbon a unor probe de lemn şi derivaţi din lemn, ca urmare a unor tratamente termice. Un punct de vedere arheometric asupra unor eşantioane de la Mǎguricea Branului

Cercetări Arheologice 30.2, 2023, 725-736
https://doi.org/10.46535/ca.30.2.18



Datarea radiocarbon a unor probe de lemn şi derivaţi din lemn, ca urmare a unor tratamente termice. Un punct de vedere arheometric asupra unor eşantioane de la Mǎguricea Branului

Radiocarbon dating of wooden samples or wooden derivates, following termal treatment. An archaeometrical point of view for some samples from Măguricea Branului

Authors: Corina-Anca Simion Maria-Loredana Marin Elena Alexandra Ispas Cristian Mănăilescu Alexandru Rǎzvan Petre Eugen S. Teodor

Keywords:

datare radiocarbon; AMS; lemn semi-ars (charcoal); lemn carbonificat; situri arheologice împădurite

radiocarbon dating; AMS; charcoal; carbonised wood; forested archaeological sites

Abstract:

Datarea radiocarbon prin metoda spectrometriei de masǎ cu ioni acceleraţi AMS, folositǎ din 2012 la IFIN-HH Mǎgurele, a oferit recent cadrul ştiinţific pentru un studiu interdisciplinar, atât din punct de vedere arheologic cât şi arheometric, aplicat unor materiale din lemn sau derivaţi ai lemnului. Primele rezultate radiocarbon calibrate obţinute pe şase eşantioane prelevate la Mǎguricea Branului în 2021 au plasat majoritatea probelor într-un interval în jurul secolului al XIII-lea, unele diferenţe putând fi explicate pe baza unor parametri ce sunt prezentaţi în acest articol. Cele patru probe similare suplimentare rezultate din campania 2022 au oferit date radiocarbon calibrate foarte diferite de estimǎri, dar şi faţǎ de cele anterioare. Deşi aceste probe au justificat dezvoltarea în laborator a unei metode noi de pre-tratare, pentru „lemn carbonificat”, unele rezultate nu au putut fi explicate din punct de vedere tehnic prin încadrarea în cei trei parametri: terminus post quem, time-width, apparent ages, aplicabili materialelor din lemn şi derivaţi, şi deci nu au putut oferi date relevante din punct de vedere arheologic. Lucrarea poate fi de interes pentru arheologii care folosesc probe de lemn pentru datarea AMS.

Radiocarbon dating by AMS accelerated ion mass spectrometry method, used from 2012 at IFIN-HH-Măgurele, offered recently the scientific frame for an interdisciplinary approach, from archaeologic and archaeometric perspectives, applied to wood samples. The first AMS results, issued in 2021 on six samples from Măguricea Branului archaeological site, have suggested a chronology around the 13th century AD, the differences being explained on terms detailed in this paper. The latter four samples, collected in the next archaeological campaign, gave very different dates. The difficulties experienced with these four samples driven us to develop new lab treatment, aiming carbonization of wood. Even so, the samples from 2022 could not be dated in a helpful manner, with parameters as terminus post quem, time-width, apparent ages. The paper could be of interest to archaeologists taking wood samples for AMS dating.

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How to cite: Corina Anca Simion, Maria Loredana Marin, Elena Alexandra Ispas, Cristian Mǎnǎilescu, Alexandru Rǎzvan Petre, Eugen S. Teodor, Datarea radiocarbon a unor probe de lemn şi derivaţi din lemn, ca urmare a unor tratamente termice. Un punct de vedere arheometric asupra unor eşantioane de la Mǎguricea Branului, Cercetări Arheologice, Vol. 30.2, pag. 725-736, 2023, doi: https://doi.org/10.46535/ca.30.2.18

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