Testing grain size dependent variability of cosmogenic nuclide concentrations for isochron burial dating of fluvial sediment (Pannonian Basin, Hungary).

ABSTRACT: In this study a new approach of cosmogenic radionuclide (CRN) isochron burial dating was developed for locations where the maximum clast size of the sediment does not reach the size of using single cobble samples. This modification makes use of the presumption that different grain size fractions have diverse pre-burial histories and thus are deposited with diverse amount of CRNs. Accordingly, a bulk sample is taken at a certain sediment depth, from which several grain size fractions are selected. These are treated as individual samples for isochron burial age determination. To test our hypothesis, a fluvial sediment succession of the Paleo-Danube River in the Western Pannonian Basin, with an assumed Pliocene age was sampled at two sample depths. The different grain size fractions (0.25-0.5

SUBMITTER: Ruszkiczay-Rudiger Z 

PROVIDER: S-EPMC12663639 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature