Articles | Volume 4, issue 2
https://doi.org/10.5194/gchron-4-713-2022
https://doi.org/10.5194/gchron-4-713-2022
Research article
 | 
15 Dec 2022
Research article |  | 15 Dec 2022

Constraining the aggradation mode of Pleistocene river deposits based on cosmogenic radionuclide depth profiling and numerical modelling

Nathan Vandermaelen, Koen Beerten, François Clapuyt, Marcus Christl, and Veerle Vanacker

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Cited articles

Akçar, N., Ivy-Ochs, S., Alfimov, V., Schlunegger, F., Claude, A., Reber, R., Christl, M., Vockenhuber, C., Dehnert, A., Rahn, M., and Schlüchter, C.: Isochron-burial dating of glaciofluvial deposits: First results from the Swiss Alps, Earth Surf. Process. Landf., 42, 2414–2425, https://doi.org/10.1002/esp.4201, 2017. 
Balco, G. and Rovey, C. W.: An isochron method for cosmogenic-nuclide dating of buried soils and sediments, Am. J. Sci., 308, 1083–1114, https://doi.org/10.2475/10.2008.02, 2008. 
Balco, G., Stone, J. O. H., and Mason, J. A.: Numerical ages for Plio-Pleistocene glacial sediment sequences by 26Al /10Be dating of quartz in buried paleosols, Earth Planet. Sci. Lett., 232, 179–191, https://doi.org/10.1016/j.epsl.2004.12.013, 2005. 
Bats, H., Paulissen, E., and Jacobs, P.: De grindgroeve Hermans te As. Een beschermd landschap, Monumenten en Landschappen, 14, 56–63, 1995. 
Beerten, K., De Craen, M., and Wouters, L.: Patterns and estimates of post-Rupelian burial and erosion in the Campine area, north-eastern Belgium, Phys. Chem. Earth, 64, 12–20, https://doi.org/10.1016/j.pce.2013.04.003, 2013. 
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Short summary
We constrained deposition phases of fluvial sediments (NE Belgium) over the last 1 Myr with analysis and modelling of rare isotopes accumulation within sediments, occurring as a function of time and inverse function of depth. They allowed the determination of three superposed deposition phases and intercalated non-deposition periods of ~ 40 kyr each. These phases correspond to 20 % of the sediment age, which highlights the importance of considering deposition phase when dating fluvial sediments.