摘要
The deposition and preservation of organic carbon(OC)in sedimentary environments(including soils and sediments)play major roles in mediating the global carbon cycle.More than 90%of OC burial in the ocean occurs in continental margin sediments,which contributes to the evolution of the Earth’s atmosphere,such as oxygen content,over geological timescales.1 However,how OC escapes mineralization and persists in such sedimentary deposits has long been a puzzle.Mineral protection through physicochemical associations of organic matter with minerals and cations is considered to be one of the primary mechanisms contributing to the environmental persistence of sedimentary OC.
基金
This work is supported by the National Natural Science Foundation of China under grant nos.42025303 and 42242014
We acknowledge support from the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Y2022077).
