石油与天然气地质 ›› 1989, Vol. 10 ›› Issue (1): 23-29.doi: 10.11743/ogg19890104

• 论文 • 上一篇    下一篇

辽河盆地第三系成岩作用与有机质成熟作用的关系

关平   

  1. 北京大学地质系
  • 收稿日期:1988-02-22 修回日期:1988-06-02 出版日期:1989-03-25 发布日期:2012-01-16

RELATONSHIP BETWEEN DIAGENESIS AND MANTURATION OF ORGANIC MATTER IN THE TERTIARY SYSTEM OF LIAOHE BASIN

Guan Ping   

  1. Department of Geology, Beijing University
  • Received:1988-02-22 Revised:1988-06-02 Online:1989-03-25 Published:2012-01-16

PDF (PC)

770

被引次数

15

摘要：

经过对辽河盆地几个剖面的研究,认为沉积岩的成岩作用和有机质的成熟作用密切相关。不同的粘土矿物对有机质演化的进程影响甚大,从而影响石油的成熟度。并且粘土矿物组合的变化也影响有机质在粘土矿物上的吸附和解吸能力,进而影响石油的初次运移。另一方面,有机质的存在对蒙皂石向伊利石转化的过程起较大作用。当有机质存在时,上述粘土反应的途径将发生变化。进一步对自生方解石的碳、氧同位素进行研究,结果表明,它是有机反应放出的碳酸氢根离子与地层中的氧化钙结合而沉淀下来的。因此,这些方解石为“有机成因”。通过以上讨论,可以认为成岩过程中各种地球化学反应(包括有机的和无机的)是相互关联的,它们构成一个完整的“成岩地球化学体系”。

Abstract:

The fact that there is a strong relationship between diagenesis and matu-ration of organic matter can be believed after studying several sections inthe Liaohe Basin.The ability of clay minerals to catalyze organic reactionsinvolved in the generation of oil has been recognized.Different clay assem-blages may play different roles in the primary migration of oil from mudsource rocks.On the other hand,the presence of organic matter appears toinfluence the mechanism of smectite-illite transformation.The reaction occursin different ways when organic matter is present or not.The study of thestable carbon-and oxygen-isotope shows that organic matter is an importantcarbon source for diagenetic calcites.Organic reaction thus correlates withinorganic reaction during diagenesis,constituting a complete“geochemicalsystem of diagenesis”.