Nature does the averaging — In-situ produced ¹⁰Be, ²¹Ne, and ²⁶Al in a very young river terrace

Autor(en)

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

Abstrakt

The concentrations of long-lived in-situ produced cosmogenic nuclides (¹⁰Be,²¹Ne,²⁶Al) in quartz obtained from a very recent (~200 a; based on¹⁴C data on organic material) terrace of the Swakop River 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.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Forschungszentrum Dresden Rossendorf (FZD), Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum, Aix-Marseille Université, University of Witwatersrand, Senckenberg Naturhistorische Sammlungen Dresden

Journal

Geosciences

Band

10

Anzahl der Seiten

16

DOI

https://doi.org/10.3390/geosciences10060237

Publikationsdatum

06-2020

Peer-reviewed

Ja

ÖFOS 2012

105105 Geochemie

Schlagwörter

ASJC Scopus Sachgebiete

Earth and Planetary Sciences(all)

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/nature-does-the-averaging--insitu-produced-10be-21ne-and-26al-in-a-very-young-river-terrace(87e0ccd8-365d-46d2-928c-8eda229d375b).html