Controlling Function of Organic Matter Supply and Preservation on Formation of Source Rocks
Ding Xiujian
Liu Guangdi
Huang Zhilong
Lu Xuejun
Chen Zhelong
Gu Feng
Abstract：The debate on formation of source rocks has been focused on “productivity mode”and “preservation mode”in marine sediments for many years.Based on the datasets of total organic carbon,carbonate carbon isotope,pyrolysis parameters and re-duced sulfur of source rocks of Erlian basin,the productivity and terrigenous organic matter input are characterized and then the role of organic matter supply and preservation in the formation of source rocks are discussed.For the lacustrine basin with high organic matter supply,organic matter supply is the main factor controlling the formation on source rocks because there are still source rocks formed by accumulation of residual organic matter even in the oxidizing sedimentary environment.For the la-custrine basin with low organic matter supply,preservation is the main factor controlling the formation on source rocks because the organic matter can only be preserved in reducing environment since it is too rare to be preserved from oxidation.
Keywords：organic matter supplyorganic matter preservationpaleo-productivityterrigenous organic matter inputErlian basinpetroleum geology
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 832-842 )