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本文分析了中国首次南大洋考察的部分资料,探讨了南极马克斯韦尔湾沉积有机质的某些早期成岩特征。文章认为:研究区域沉积有机质的早期成岩分布特征主要受沉降时间的制约,这种制约关系迈进而影响了有机质的剖面变化形式。有机质固相分解量与液相分布量近乎平行的演化特征实际上反映了有机质早期成岩的降解速率和结构转换。有机质的早期成岩过程中伴随着生源碳的沉积,这也反映了本区有机质在早期成岩演化过程中的部分归宿。
This paper analyzes some of the data from the first survey of the Southern Ocean in China and discusses some early diagenetic characteristics of sedimentary organic matter in Maxwell Bay, Antarctica. The article holds that: the early diagenetic distribution of sedimentary organic matter in the study area is mainly controlled by the settling time, and this restrictive relationship advances and affects the profile change of organic matter. The evolutionary characteristics of the organic matter in which the amount of solid-phase decomposition is almost parallel to the amount of liquid phase distribution actually reflect the degradation rate and structural transformation of early diagenesis of organic matter. The early diagenesis of organic matter is accompanied by the deposition of biogenic carbon, which also reflects the fate of organic matter in the early diagenetic evolution of the area.