天然气地球科学

• 天然气地质学 • 上一篇    下一篇

陆相湖盆层序地层格架内有机质发育及控制因素分析——以中上扬子建南地区侏罗系东岳庙段为例

刘英杰,黄传炎,岳家恒,郭来源   

  1. 中国地质大学(武汉)构造与油气资源教育部重点实验室,湖北 武汉 430074
  • 收稿日期:2016-12-30 修回日期:2017-05-15 出版日期:2017-06-10 发布日期:2017-06-10
  • 通讯作者: 黄传炎(1976-),男,湖北松滋人,副教授,博士,主要从事沉积学、层序地层学、盆地分析研究. E-mail:cyhuang76@163.com.
  • 作者简介:刘英杰(1994-),男,江西赣州人,硕士研究生,主要从事层序地层学与非常规油气地质研究. E-mail:2779771631@qq.com.

Analysis of organic matter characteristics and their controlling factors in the sequence stratigraphic framework:Case study of Jurassic Dongyuemiaomember of the Ziliujin Formation in Jiannan area,Upper and Middle Yangtze Region

Liu Ying-jie,Huang Chuan-yan,Yue Jia-heng,Guo Lai-yuan   

  1. Key Laboratory of Tectonics and Petroleum Resources of the Ministry of Education,China University of Geosciences,Wuhan 430074,China
  • Received:2016-12-30 Revised:2017-05-15 Online:2017-06-10 Published:2017-06-10

摘要:

在层序地层学和沉积学研究的基础上,通过相关性分析,优选出Sr/V、Cd/Ca、Zr/Rb 3组元素地球化学指标,分别对中上扬子建南地区侏罗系自流井组东岳庙段的古气候条件、古生产力、以及古水动力条件开展分析,探讨研究区目的层有机质在层序地层格架内发育的成因机制。研究表明:与其他湖盆沉积的有机质发育特征相比,中上扬子建南地区侏罗系东岳庙段的湖相沉积在层序地层格架内有机质发育规律具有独特性,其低位体系域有机质非常发育,而湖扩体系域有机质较发育,高位体系域有机质最不发育,在沉积微相中,低位体系域浅湖亚相沉积有机质比低位体系域滨湖亚相沉积中的有机质更发育;而造成有机质差异性发育的主要控制因素是古生产力和有机质的保存环境。

关键词: 有机质发育控制因素, 层序地层格架, 沉积环境, 自流井组东岳庙段, 建南地区

Abstract:

Based on three groups of elemental geochemical indicators(Sr/V,Cd/Ca,Zr/Rb),the paper analyzed the paleoclimate,paleoproductivity and hydrodynamic condition,and explained genetic mechanism of organic matter within the sequence stratigraphic framework of Jurassic Dongyuemiao Member of the Ziliujin Formation in Jiannan area of the Upper and Middle Yangtze Region.The study results show that it has own unique characteristics compared with other lacustrine basin.The organic matter of the low-stand system tract(LST) was the richest,that of the lake expand system tract(EST) was relatively rich,while that of the high-stand systems tract(HST) was poor.The organic matter of LST shallow lake facies is richer than that of LST lakeshore.The main controlling factors of the differential characteristics are paleoproductivity and preservation environment of organic matter.

Key words: Controlling factors of organic matter, Sequence stratigraphic framework, Depositional Paleoenvironment, The Dongyuemiao member of Ziliujin Formation,Jurassic, Jiannan area

中图分类号: 

  • TE121.3

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