crta
Hrvatska znanstvena Sekcija img
bibliografija
3 gif
 Home
 About the project
 FAQ
 Contact
4 gif
Browsing
Basic search
Advanced search
Statistical data
Other bibliographies
Similar projects
 Catalogues and databases

Bibliographic record number: 647439

Journal

Authors: Štrok, Marko; Smodiš, Borut; Petrinec, Branko; Franić, Zdenko
Title: Correcting for potential 222Rn loss in 210Pb geochronology in sediments from the South Adriatic Pit
Source: Quaternary geochronology (1871-1014) 18 (2013); 93-98
Paper type: article
Keywords: 210Pb geochronology; sediments; Adriatic Sea; South Adriatic Pit
Abstract:
Measurement of 226Ra activity concentrations is often used to estimate supported levels of 210Pb for purposes of geochronology. However, the implicit assumption that supported 210Pb and 226Ra are in secular radioactive equilibrium may not always be true because of the migration of an intermediate product, gaseous 222Rn. As a consequence, supported 210Pb activity concentration might be lower than the measured 226Ra value, which was the case in a core collected from the South Adriatic Pit. Here we present a new approach to improve the determination of supported 210Pb, which is based on correction of 226Ra activity concentrations using the average (210Pb/226Ra) activity ratio in deeper sediment layers. Using this approach, sedimentation rates for the South Adriatic Pit with a constant rate of supply model and a constant initial concentration model were 0.054 g/cm2/a and 0.070 g/cm2/a, respectively.
Project / theme: 022-0222882-2823, 022-0222882-2335
Original language: ENG
Citation databases: Web of Science: Science Citation
Current Contents Citation Index
Scopus
Web of Science: Science Citation Index Expanded
Category: Znanstveni
Research fields:
Physics,Geology
URL: http://www.sciencedirect.com/science/article/pii/S1871101413000629
Broj citata:
Altmetric:
DOI: 10.1016/j.quageo.2013.06.002
URL cjelovitog rada:
Google Scholar: Correcting for potential 222Rn loss in 210Pb geochronology in sediments from the South Adriatic Pit
Contrib. to CROSBI by: Branko Petrinec (petrinec@imi.hr), 15. Lis. 2013. u 11:53 sati



  Print version   za tiskati


upomoc
foot_4