摘要
本文主要针对济阳坳陷车古、义古和桩古潜山带若干钻井的下古生界碳酸盐岩样品,开展分子有机地球化学研究。研究主要揭示了下古生界碳酸盐岩氯仿沥青A中的生标组成及其碳同位素特征,可为环渤海地区下古生界潜在的原生油气藏的判识提供依据;同时研究表明碳酸盐岩晶包有机质中正构烷烃的分布和碳同位素组成与氯仿沥青A中的存在明显差异,早期有机质的特征仍被保留在晶包有机质中,因此可用于古沉积环境的探讨。
The aim of this study is to investigate molecular organic geochemical characteristics of the Lower Palaeozoic carbonate rocks by analyzing carbonate rocks from some drills in the buried hill zones such as Chegu, Yigu and Zhuanggu in the Jiyang depression. The results show the biomarker distributions and carbon isotopic compositions of bitumen A from these Lower Palaeozoic carbonate rocks, and they can be used to identify potential indigenous oils and gases in the Lower Palaeozoic of the Bohai Bay area. In addition, the study also indicates that the n-alkane fractions of crystal-enclosed organic matter in carbonate rocks have obvious different distributions and carbon isotopic compositions from those in bitumen A. The main characteristics of the early organic matter are still reserved in crystal-enclosed organic matter, so they can be used for discussing the paleoenvironment.
出处
《地质论评》
CAS
CSCD
北大核心
2006年第1期132-136,共5页
Geological Review
基金
中国科学院重大项目(编号kzcx1-sw-18-03)
国家自然科学基金项目(编号40372070)资助成果
关键词
下古生界
碳酸盐岩
晶包有机质
碳同位素
济阳坳陷
Lower Paleozoic
carbonate rocks
crystal-enclosed organic matter
carbon isotope
Jiyang depression
