Advances in Earth Science ›› 2018, Vol. 33 ›› Issue (10): 1024-1033. doi: 10.11867/j.issn.1001-8166.2018.10.1024.

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The Diversity of Organic Matter in Marine Sediments and the Suspiciousness of Source Parameters: A Review

Hailun Wei 1( ), Jingong Cai 1, *( ), Guoli Wang 2, Xuejun Wang 3   

  1. 1.State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China
    2. Science and Technology Institute, China Petroleum & Chemical Corporation, Beijing 100086, China;
    3. Exploration and Development Institute of Shengli Oilfield Company, Sinopec, Shandong Dongying 257015,China
  • Received:2018-06-07 Revised:2018-09-08 Online:2018-10-10 Published:2018-11-16
  • Contact: Jingong Cai;
  • About author:

    First author:Wei Hailun(1991- ), male, Du'an County, Guangxi Province, Ph.D student. Research areas include distribution and source of organic matter in marine sediment and carbon cycle of the ocean. E-mail:

  • Supported by:
    Project supported by the National Natural Science Foundation of China "Research on the separation and characteristics of different occurrence state hydrocarbon in shale"(No.41672115);Independent Subject of State Key Laboratory of Marine Geology, Tongji University "Research on the source and preservation mechanism of sedimentary organic matter of East China Sea"(No.MG20170201).

Hailun Wei, Jingong Cai, Guoli Wang, Xuejun Wang. The Diversity of Organic Matter in Marine Sediments and the Suspiciousness of Source Parameters: A Review[J]. Advances in Earth Science, 2018, 33(10): 1024-1033.

There are various types of Organic Matter (OM) in marine sediments, and it is of great significance to accurately estimate the source of them. The methods used in most researches include element ratio (C/N), stable isotopes (δ13C) and biomarkers (BIT), all of which are used for the whole sample as objects and calculated by end-member of terrestrial and marine source OM, respectively. However, OM is preserved in different ways, such as on its own recalcitrance or combining with inorganic minerals. Preservation differences make their respective parameter values change. After differential sedimentary by gravity or other factors,different preservation types of OM are enriched or dispersed, making some parameters distorted and even meaningless in some areas. Therefore, the parameters of OM measured by the whole sample are influenced by the source of OM and the way of deposition and preservation. Therefore, it is unreliable to use these parameters to study the source of OM without considering the way of preservation. Based on this, this paper put forward a method of particle separation to separate the sediment in different propertied and preservation types. According to the composition and characteristics of the OM at the specific grain level, the corresponding index and end-members value were used to calculate more accurate proportion of the OM. It is of profound significance to understand the production, aggregation, occurrence, migration and deposition of OM and its evolution in the entire carbon cycle.

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