Nature Does the Averaging—In-Situ Produced 10Be, 21Ne, and 26Al in a Very Young River Terrace

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

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Nature Does the Averaging—In-Situ Produced ¹⁰Be, ²¹Ne, and ²⁶Al in a Very Young River Terrace

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Ulf Linnemann

Senckenberg Naturhistorische Sammlungen Dresden (SNSD), Museum für Mineralogie und Geologie, Sektion Geochronologie, 01109 Dresden, Germany

Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany

Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Helmholtz Institute Freiberg for Resource Technology, 01328 Dresden, Germany

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Deutsches GeoForschungsZentrum (GFZ), 14473 Potsdam, Germany

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Aix-Marseille University, CNRS, IRD, Coll. France, INRAE, CEREGE UM 34, 13545 Aix-en-Provence, France

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Fakultät für Physik-lsotopenphysik, Universität Wien, 1090 Wien, Austria

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School of Geosciences, University of the Witwatersrand, Johannesburg 2050, South Africa

Author to whom correspondence should be addressed.

^†

ASTER Team: Georges Aumaître, Didier Bourlès, Karim Keddadouche.

Geosciences 2020, 10(6), 237; https://doi.org/10.3390/geosciences10060237

Received: 2 April 2020 / Revised: 10 June 2020 / Accepted: 15 June 2020 / Published: 18 June 2020

(This article belongs to the Section Geochemistry)

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Abstract

The concentrations of long-lived in-situ produced cosmogenic nuclides (¹⁰Be, ²¹Ne, ²⁶Al) in quartz obtained from a very recent (~200 a; based on ¹⁴C 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. View Full-Text

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

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MDPI and ACS Style

Gärtner, A.; Merchel, S.; Niedermann, S.; Braucher, R.; ASTER-Team; Steier, P.; Rugel, G.; Scharf, A.; Le Bras, L.; Linnemann, U. Nature Does the Averaging—In-Situ Produced ¹⁰Be, ²¹Ne, and ²⁶Al in a Very Young River Terrace. Geosciences 2020, 10, 237. https://doi.org/10.3390/geosciences10060237

AMA Style

Gärtner A, Merchel S, Niedermann S, Braucher R, ASTER-Team, Steier P, Rugel G, Scharf A, Le Bras L, Linnemann U. Nature Does the Averaging—In-Situ Produced ¹⁰Be, ²¹Ne, and ²⁶Al in a Very Young River Terrace. Geosciences. 2020; 10(6):237. https://doi.org/10.3390/geosciences10060237

Chicago/Turabian Style

Gärtner, Andreas, Silke Merchel, Samuel Niedermann, Régis Braucher, ASTER-Team, Peter Steier, Georg Rugel, Andreas Scharf, Loic Le Bras, and Ulf Linnemann. 2020. "Nature Does the Averaging—In-Situ Produced ¹⁰Be, ²¹Ne, and ²⁶Al in a Very Young River Terrace" Geosciences 10, no. 6: 237. https://doi.org/10.3390/geosciences10060237

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Nature Does the Averaging—In-Situ Produced ¹⁰Be, ²¹Ne, and ²⁶Al in a Very Young River Terrace

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