Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
BG | Volume 15, issue 10
Biogeosciences, 15, 3133–3142, 2018
https://doi.org/10.5194/bg-15-3133-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 3133–3142, 2018
https://doi.org/10.5194/bg-15-3133-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 25 May 2018

Research article | 25 May 2018

In situ evidence of mineral physical protection and carbon stabilization revealed by nanoscale 3-D tomography

Yi-Tse Weng et al.
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Cited articles  
Alexandre, A., Basile-Doelsch, I., Delhaye, T., Borshneck, D., Mazur, J. C., Reyerson, P., and Santos, G. M.: New highlights of phytolith structure and occluded carbon location: 3-D X-ray microscopy and NanoSIMS results, Biogeosciences, 12, 863–873, https://doi.org/10.5194/bg-12-863-2015, 2015. 
Baldock, J. A. and Skjemstad, J. O.: Role of the soil matrix and minerals in protecting natural organic materials against biological attack, Org. Geochem., 31, 697–710, 2000. 
Chen, C., Dynes, J. J., Wang, J., Karunakaran, C., and Sparks, D. L.: Soft X-ray Spectromicroscopy Study of Mineral-Organic Matter Associations in Pasture Soil Clay Fractions, Environ. Sci. Technol., 48, 6678–6686, 2014a. 
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We have developed a high-resolution 3-D tomography approach and successfully applied it. We provided in situ evidence and reveal an abundance of mineral nanoparticles, in dense thin layers or nano-aggregates/clusters, instead of crystalline clay-sized minerals on or near OC surfaces. The key working minerals for C stabilization were reactive short-range-order (SRO) mineral nanoparticles and poorly crystalline submicron-sized clay minerals in a Fe oxyhydroxide-poor environment.
We have developed a high-resolution 3-D tomography approach and successfully applied it. We...
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