Naslov
Can we determine the age of an old olive tree by the 14C dating method?

Autori
Krajcar Bronić, Ines ; Sironić, Andreja ; Borković, Damir ; Milotić, Marno

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts, 6th International Scientific Conference Methodology and Archaeometry (MetArh) / Miloglav, I. - Zagreb : Filozofski fakultet Sveučilišta u Zagrebu, 2018, 47-47

ISBN
978-953-175-745-4

Skup
6th Scientific Conference Methodology & Archaeometry (MetArh)

Mjesto i datum
Zagreb, Hrvatska, 06.12.2018. - 07.12.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
14C dating ; dating of trees ; dating of olive tree ; Old olive tree ; Brijuni

Sažetak
Radiocarbon (14C) dating is a convenient and accurate method of absolute dating of organic materials. By measuring the 14C remained in the organic material we can determine the time elapsed since the death of the organism. Wood is a very reliable material for 14C dating and the calibration curves were obtained by precise dating of tree rings up to 12, 000 years old. However, olive trees represent a kind of tree that does not save the oldest tree rings - the inner and oldest part of the trunk in olive trees usually rots, making the radiocarbon analysis of material from the first years of life of the tree impossible. The Old olive tree (Olea europaea L.) on the Veli Brijun Island, National Park Brijuni, Istria, Croatia, was expected to be 1600 years old. The inside of the Old olive tree was hollow so that the central, older wood was missing. Five samples were taken from the inner side of the trunk. All the results were obtained by AMS (accelerator mass spectrometry) measurement technique that enables analysis of very small samples containing a few milligrams of carbon. The conventional radiocarbon age expressed in years Before Present (BP) were calibrated by OxCal software using the IntCal13 calibration curve. The calibrated ages and age spans are expressed as "cal AD". Four samples resulted in conventional radiocarbon ages of up to 150 BP. After calibration it was found that the wood was not older than 300 years. This is in agreement with most other radiocarbon dates of internal wood from living olive trees, rarely older than 300 years. The last sample clearly indicated a younger branch dated to the period cal AD 1979 – 1981, showing thus the complexity of the olive trunk structure.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne prirodne znanosti, Arheologija

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