Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 6, issue 2
Articles | Volume 6, issue 2
https://doi.org/10.5194/esurf-6-329-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-6-329-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 2
Research article
 | 
07 May 2018
Research article |  | 07 May 2018

Tracking the 10Be–26Al source-area signal in sediment-routing systems of arid central Australia

Martin Struck, John D. Jansen, Toshiyuki Fujioka, Alexandru T. Codilean, David Fink, Réka-Hajnalka Fülöp, Klaus M. Wilcken, David M. Price, Steven Kotevski, L. Keith Fifield, and John Chappell

Supplement

https://doi.org/10.5194/esurf-6-329-2018-supplement

Data sets

1 second SRTM Derived Hydrological Digital Elevation Model (DEM-H) version 1.0 Geoscience Australia https://data.gov.au/dataset/1-second-srtm-derived-hydrological-digital-elevation-model-dem-h-version-1-0

Surface Geology of Australia 1:1 million scale (2012 Edn.), Commonwealth of Australia (Geoscience Australia) O. Raymond, S. Liu, R. Gallagher, W. Zhang, and L. Highet https://data.gov.au/dataset/surface-geology-of-australia-data-package-2012-edition

Decadal and multi-decadal mean annual rainfall data Australian Bureau of Meteorology http://www.bom.gov.au/jsp/ncc/climate_averages/decadal-rainfall

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Short summary
Measurements of cosmogenic nuclides 10Be and 26Al in sediment along central Australian streams show that lithologically controlled magnitudes of source-area erosion rates (0.2–11 m Myr-1) are preserved downstream despite sediment mixing. Conversely, downstream-increasing sediment burial signals (> 400 kyr) indicate sediment incorporation from adjacent, long-exposed storages, which, combined with low sediment supply and discontinuous flux, likely favours source-area 10Be–26Al signal masking.
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