Consistency and environmental variability in mineral-organic interactions: The role of illite in organic carbon preservation in the northern South China Sea
文献类型：期刊论文
| 作者 | Huang, Zhen3,6; Wang, Chenyang5; Yu, Zhaojie7; Qu, Hongbao3,4; Zheng, Zhenzhen1,2; Zheng, Li-Wei1,2; Kao, Shuh-Ji2 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 253页码:11 |
| 关键词 | Organic carbon preservation Illite Mineral-organic interactions South China Sea Ramped pyrolysis/oxidation Marine sediments |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2025.104983 |
| 通讯作者 | Zheng, Li-Wei(zlw@hainanu.edu.cn) |
| 英文摘要 | Mineral-organic matter interactions are globally recognized as a primary control on the long-term preservation of sedimentary organic carbon (OC). By integrating new ramped pyrolysis/oxidation (RPO) data from the northern South China Sea (SCS) with datasets from global fjords, estuaries, and marine systems, we confirm a consistent inverse relationship between OC content and both mean activation energy (mu E) and bond diversity (sigma E), reinforcing the thermodynamic signature of mineral-associated OC preservation. However, SCS sediments reveal a key deviation: sigma E in the SCS positively correlates with low-E OC fractions, in contrast to global patterns, suggesting that mineral interactions in this setting preferentially stabilize thermally labile components. We further show that illite, the dominant clay mineral in the SCS, correlates with broader sigma E and lower mu E, consistent with its role in retaining OC across a thermally diverse spectrum. While smectite is often cited as more protective, it is scarce in this region and shows no significant correlation with RPO parameters. Spatial trends also highlight the importance of OC source: a unique terrestrial-influenced site (BC15) exhibits elevated thermal stability and low low-E OC fractions, likely due to the intrinsic recalcitrance of vascular plant-derived material rather than mineral protection. Our findings demonstrate that while mineral-OC interactions are globally consistent in their role, their expression is modulated by sediment mineralogy, OC sources, and depositional settings. This underscores the importance of combining thermal reactivity metrics with mineralogical context to resolve the mechanisms underpinning OC preservation. |
| WOS关键词 | SURFACE SEDIMENTS ; MARINE-SEDIMENTS ; CLAY-MINERALS ; MATTER ; BURIAL |
| 资助项目 | National Natural Science Foun-dation of China[NSFC 42266002] ; National Natural Science Foun-dation of China[41806062] ; National Natural Science Foun-dation of China[42376055] ; National Postdoctoral Program for Innovative Talents of China[BX201700139] ; Hainan Province Science and Technology Special Fund[ZDYF2022SHFZ112] ; Hainan Major Science and Technology Program[ZDKJ2021008] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001534568500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202665]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Zheng, Li-Wei |
| 作者单位 | 1.Hainan Univ, Sch Marine Sci & Engn, Haikou 570100, Peoples R China 2.Hainan Univ, State Key Lab Marine Resources Utilizat South Chin, Haikou 570228, Peoples R China 3.Hainan Univ, Sch Ecol, Haikou 570100, Peoples R China 4.Marine Geol Inst Hainan Prov, Haikou 570206, Peoples R China 5.Hainan Univ, Sch Environm Sci & Engn, Haikou 570100, Peoples R China 6.Hainan Univ, Sch Marine Biol & Fisheries, Haikou 570100, Peoples R China 7.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Zhen,Wang, Chenyang,Yu, Zhaojie,et al. Consistency and environmental variability in mineral-organic interactions: The role of illite in organic carbon preservation in the northern South China Sea[J]. GLOBAL AND PLANETARY CHANGE,2025,253:11. |
| APA | Huang, Zhen.,Wang, Chenyang.,Yu, Zhaojie.,Qu, Hongbao.,Zheng, Zhenzhen.,...&Kao, Shuh-Ji.(2025).Consistency and environmental variability in mineral-organic interactions: The role of illite in organic carbon preservation in the northern South China Sea.GLOBAL AND PLANETARY CHANGE,253,11. |
| MLA | Huang, Zhen,et al."Consistency and environmental variability in mineral-organic interactions: The role of illite in organic carbon preservation in the northern South China Sea".GLOBAL AND PLANETARY CHANGE 253(2025):11. |
入库方式： OAI收割
来源：海洋研究所
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