Source and composition of sedimentary organic matter in the head of Three Gorges Reservoir: a multiproxy approach using δ[superscript 13]C, lignin phenols, and lipid biomarker analyses
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Author(s)
Ding, He
Zhu, Changfeng
Zhang, Kai
Xiao, Shangbin
Cui, Xingqian
Sun, Yongge
Date Issued
June 2017
Journal
Acta Geochimica
Publisher
Science Press
Citation
Ding, He, Changfeng Zhu, Kai Zhang, Shangbin Xiao, Xingqian Cui, and Yongge Sun. “Source and Composition of Sedimentary Organic Matter in the Head of Three Gorges Reservoir: a Multiproxy Approach Using δ[superscript 13]C, Lignin Phenols, and Lipid Biomarker Analyses.” Acta Geochimica 36, no. 3 (June 22, 2017): 452–455.
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Author's final manuscript
Abstract
A multiproxy approach including bulk organic carbon, δ[superscript 13]C, lignin phenols, and lipid biomarker analyses were applied to characterize the source and composition of sedimentary organic matter in the head part of Three Gorges Reservoir. OM consisted of both natural (autochthonous and allochthonous) and anthropogenic inputs. The natural OM included input from vascular plants, especially non-woody angiosperms. The allochthonous input included plankton and microbial production, likely due to localized eutrophication. Anthropogenic inputs likely derived from petroleum input and/or urban activities. Other anthropogenic inputs were untreated sewage waste. These influences were concluded to be regionally specific point sources of pollution based on relative distributions and on the fact that molecular characteristics of sedimentary OM were not distributed smoothly along a gradient.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s11631-017-0189-8
