石油与天然气地质 ›› 1997, Vol. 18 ›› Issue (2): 83-89.doi: 10.11743/ogg19970201

• 论文 •    下一篇

陆相层序地层学研究中的某些问题

徐怀大   

  1. 中国地质大学, 北京 100083
  • 收稿日期:1996-12-09 修回日期:1997-01-07 出版日期:1997-06-25 发布日期:2012-01-18
  • 基金项目:

    国家“八五”攻关项目(85-101-04-05)的部分成果。

SOME PROBLEMS IN STUDY OF CONTINENTAL SEQUENCE STRATIGRAPHY

Xu Huaida   

  1. China University of Geosciences, Beijing
  • Received:1996-12-09 Revised:1997-01-07 Online:1997-06-25 Published:2012-01-18

PDF (PC)

881

被引次数

267

摘要：

陆相层序有它自身的特点,一是基准面比海相地层复杂,不是水平面,而是高于海面的复杂曲面。Cross提出的方法比较好地解决了这个问题,但是要用地震资料加以约束。二是年龄确定困难,应当大力开展各种物理的、同位素的和化学的年龄测定工作。三是应当正确地看待连续强反射,不是所有的连续强同相轴都是层序界面,也不存在遍布全盆地的连续强同相轴。四是要重新认识生油岩,要从四维空间上研究生油岩中的有机质类型、丰度,以及在生油过程中可能发生的物理和物理化学作用。结合目前我国层序地层学研究的现状,有四个值得注意的问题。

关键词: 层序地层学, 基准面, 陆相层序, 年龄确定, 生油岩

Abstract:

Continental sequence has its own characteristics.Firstly,its base level is a curved rather than a horizontal surface and has a higher elevation than that of sea level.The method proposed by Cross solved this problem appreciatively,but its final result has to be checked by seismic data.Secondly,geological age of sequences is difficult to be determined.More work should be carried out in physical,radioisotopic and chemical age dating.Thirdly,continuous strong reflections should be deal with correctly.Not all continuous strong isopic axes are sequences boundaries,and none of the continuous strong reflection can cover a whole basin.Finally,the types and abundances of organic matter in source rocks and their physical and chemical processes in hydrocarbon generation should be studies.These four problems in sequence stratigraphic study should be paid more attention to in the future.