新疆石油地质

新疆石油地质 ›› 2004, Vol. 25 ›› Issue (1): 37-40.

• 油气勘探 • 上一篇    下一篇

识别陆相层序界面的地球化学方法

赵俊青1, 纪友亮1,2, 张善文3   

  1. 1.中国科学院广州地球化学研究所,广东广州510640;
    2.同济大学海洋与地球科学学院，上海200092;
    3.中国石化胜利油田分公司,山东东营,257015
  • 收稿日期:2003-01-16 出版日期:2004-02-01 发布日期:2020-08-06
  • 作者简介:赵俊青(1974-)，男，内蒙古呼和浩特人，博士，石油地质。联系电话:020-85291217
  • 基金资助:
    国家“十五”科技攻关项目，济阳坳陷下第三系隐蔽油气藏形成机理研究 (2001BA960509)

Geochemical Methods for Identification of Continental Sequence Interfaces

ZHAO Jun-qing1, JI You-liang1,2, ZHANG Shan-wen3   

  1. 1. Institute of Earth Resources and Information, University of Petroleum, Dongying, Shandong 25706 l, China;
    2. Institute of Earth and Ocean Science, Tongji University, Shanghai 200092, China;
    3. Shengli Oilfield Company, Sinopec, Dongy ing, Shandong 257015, China
  • Received:2003-01-16 Online:2004-02-01 Published:2020-08-06

PDF

159

摘要： 粘土矿物、微量元素普遍存在于各种类型的沉积物和沉积岩中，它们对环境的变化极为敏感，同时它们的沉积分异、组合特征、矿物成分及其含量都从不同的角度记录了形成过程中各种环境因素的变化。这些对恢复古环境,研究陆相湖盆水深变化具有重要的指示意义。通过对东营凹陷胜北断层下降盘沙三段一沙四.上段各层序内部单元中岩石地球化学标型参数的研究发现,地层单元形成过程中，在古气候驱动下的湖平面变化旋回中,沉积岩中的矿物成分生要指粘土矿物和胶结物)、化学成分微量元素)等皆发生周期性变化。

关键词: 粘土矿物, 微量元素, 胶结物, 古盐度, 层序, 东营凹陷

Abstract: Clay minerals and trace elements are universally distributed in various deposits and sedimentary rocks. They are extremely sensitiveto environmental changes. And the characteristics of their sedimentary differentiation and combination as well as mineral composition and con-tents have recorded the changes of various environmental factors when they formed. It is of an important indicating significance to reconstructpaleo-env ironment and to study continental lake basin's varied water depth. Taking each sequential element of the third member and the fourthupper member of Shahejie formation in Sengbei fault' 's downthrow, Dongy ing sag as an example, the lithologic geochemical ty pomorphic parame-ters are studied. It is suggested that in cyclic lake-level changes controlled by paleo-climate, cyclic changes could occur in mineral composition(clay minerals and cements), chemical composition (trace element), etc., in sedimentary rocks.

Key words: clay mineral, trace element, cement, paleo-salinity, sequence, Dongying sag

中图分类号: