Biogeosciences
Biogeosciences
BG
Articles | Volume 15, issue 10
Articles | Volume 15, issue 10
https://doi.org/10.5194/bg-15-3133-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-15-3133-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 10
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, Chun-Chieh Wang, Cheng-Cheng Chiang, Heng Tsai, Yen-Fang Song, Shiuh-Tsuen Huang, and Biqing Liang

Supplement

https://doi.org/10.5194/bg-15-3133-2018-supplement

Video supplement

Figure SMOV1. Video illustration extracted from 3-D absorption-contrast tomography of lab-made BC and mineral nanoparticle consortium. Y.-T. Weng https://doi.org/10.5446/36090

Figure SMOV2. Video illustration extracted from 3-D phase-contrast tomography of lab-made BC and mineral nanoparticle consortium. Y.-T. Weng https://doi.org/10.5446/36091

Figure SMOV3. Video illustration obtained from 3-D absorption-contrast tomography of the particulate mineral-bearing OC from the mountain soil. Y.-T. Weng https://doi.org/10.5446/36092

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Short summary
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.
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