Nature does the averaging – in-situ produced ¹⁰Be, ²¹Ne, and ²⁶Al in very young river terraces

Gärtner, Andreas; Merchel, Silke; Niedermann, Samuel; Braucher, Régis; ASTER-Team; Steier, Peter; Rugel, Georg; Scharf, Andreas; Le Bras, Loic; Linnemann, Ulf

doi:10.3390/geosciences10060237

Nature does the averaging – in-situ produced ¹⁰Be, ²¹Ne, and ²⁶Al in very young river terraces

Gärtner, A.; Merchel, S.; Niedermann, S.; Braucher, R.; ASTER-Team; Steier, P.; Rugel, G.; Scharf, A.; Le Bras, L.; Linnemann, U.

The concentrations of long-lived cosmogenic nuclides (¹⁰Be, ²¹Ne, ²⁶Al) in quartz obtained from a very recent (~200 a) river terrace in Namibia are nearly constant throughout a 322 cm long depth-profile. These findings corroborate earlier hypotheses postulating a homogeneous distribution of these nuclides in freshly-deposited river terrace sediments. An averaged nuclide concentration is a crucial and generally assumed prerequisite for the determination of numerical ages of old sediments.

Keywords: cosmogenic nuclides; accelerator mass spectrometry; dating; river sediments

Involved research facilities

Ion Beam Center DOI: 10.17815/jlsrf-3-159

Related publications

DOI: 10.17815/jlsrf-3-159 is cited by this (Id 27695) publication

Geosciences 10(2020), 237
DOI: 10.3390/geosciences10060237
ISSN: 2076-3263
Cited 4 times in Scopus

Permalink: https://www.hzdr.de/publications/Publ-27695