西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (6): 11-15.DOI: 10.3863/j.issn.1674-5086.2010.06.003

• 地质勘探 • 上一篇    下一篇

利用孢粉信息反演辽东湾古近纪气候变化

吴伟   

  1. 河南理工大学资源环境学院,河南 焦作 454003
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-12-20 发布日期:2010-12-20

INVERSE PALAEOCLIMATE OF PALEOGENE IN LIAO-DONG BAY DEPRESSION BY USING PALYNOLOGICAL DATA

WU Wei

  

  1. School of Resources and Environment Engineering,Henan Polytechnic University,Jiaozuo Henan,454003,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20

摘要: 在利用孢粉、地震等资料划分辽东湾古近纪等时地层格架的基础上,通过建立孢粉气候信息函数的方法反演辽东湾古近纪温度和湿度变化曲线,将其划分为1个一级气候旋回,4个二级气候旋回和10个三级气候旋回,结合湖平面变化曲线分析气候旋回的作用,得出气候与湖平面变化相关性高、控制部分层序和沉积发育以及对烃源岩分布的绝对控制作用。

关键词: 孢粉, 古气候, 层序地层, 信息函数, 古近纪, 辽东湾

Abstract: Isochronous sequence stratigraphy is identified by using palynological and seismic data.Through the establishment of palynological climatic information function,the temperature and moisture curve of Paleogene in Liao-dong Bay depression is drawn.Based on temperature and moisture feature,Paleogene is divided into 1 first-order,4 second-order and 11 third-order climatic cycles.The climate swing function is analyzed by combining the lacustrine level change curve.From the analysis,it can be concluded that the climate has a close relationship with the lake level.It can control sequence,sedimentary and source rock.

Key words: sporopollen, palaeoclimate, sequence stratigraphy, information function, Paleogene, Liao-dong Bay

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