Naslov
Marine radiocarbon reservoir effect in the eastern Adriatic

Autori
Faivre, Sanja ; Bakran-Petricioli, Tatjana ; Barešić, Jadranka ; Horvatinčić, Nada

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

Izvornik
4th Scientific meeting Quaternary geology in Croatia and Slovenia : book of abstracts / Marjanac, Ljerka - Zagreb : Hrvatska akademija znanosti i umjetnosti (HAZU), 2015, 8-9

ISBN
978-953-347-021-4

Skup
Scientific meeting Quaternary geology in Croatia and Slovenia (4 ; 2015)

Mjesto i datum
Zagreb, Hrvatska, 25.03.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
marine radiocarbon reservoir effect; pre-bomb marine organisms; algae; Adriatic

Sažetak
The two millennia sea-level curves along the eastern Adriatic coast are based on different markers. Those are primarily archaeological coastal remains, geomorphological and sedimentological markers. Today, the approach to studies of sea level variations is multidisciplinary, so different markers are used and, if possible, combined. In order to obtain more precision and a better accuracy of sea-level curves the latest research along the eastern Adriatic has been centered on Lithophyllum byssoides algal rims as sea-level markers (Faivre et al., 2010 ; 2013). Such fossil bio-constructions have proven to be precise sea-level indicators in microtidal environments (Laborel et al., 1994). Previous research assumes that Lithophyllum does not appear to be subject to any kind of reservoir effect. Those assumptions were based on the datation of living thalli. The study of the MRE along the eastern Adriatic has been started as it is very important for chronological accuracy in temporally short studies like the study of 2 ka relative sea level variation. Radiocarbon analyses of 14 modern, pre-bomb marine organisms collected along the eastern Adriatic coast between AD 1836 and 1946 have been performed. 14C ages of 5 algal and 9 mollusk samples were measured by accelerator mass spectrometry. Marine radiocarbon reservoir ages (R) and regional offsets (∆R) have been calculated and compared. The marine reservoir ages of shells and algae significantly differ even though both live on hard substrate from the intertidal zone to shallow sea. Coralline algae have considerably lower reservoir age (355 ± 34 14C yr) and ∆R value (-9 ± 34 14C yr) than mollusks (R 513 ± 53 14C yr ; ∆R 154 ± 52 14C yr), but the variability of R is great in both groups.

Izvorni jezik
Engleski

Znanstvena područja
Geografija

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