石油学报 ›› 1998, Vol. 19 ›› Issue (2): 32-35.DOI: 10.7623/syxb199802006

• 地质勘探 • 上一篇    下一篇

辽河盆地东部凹陷构造—热历史分析

邱楠生1, 冯石1, 廖兴明2, 李忠飞 2   

  1. 1. 石油大学 北京;
    2. 辽河油田研究院
  • 收稿日期:1997-03-14 出版日期:1998-04-25 发布日期:2013-07-08
  • 作者简介:邱楠生,1994年毕业于中国科学院地质研究所,获构造地质学博士学位.现为石油大学(北京)盆地与油藏研究中心副教授.通讯处:北京昌平水库路.邮政编码:102200.

AN ANALYSIS ON THE THERMAL HISTORY OF EASTERN DEPRESSION IN LIAOHE BASIN

Qiu Nansheng1   

  1. Petroleum University
  • Received:1997-03-14 Online:1998-04-25 Published:2013-07-08

摘要: 利用磷灰石裂变径迹封闭长度分布作为地质温度计对辽河盆地东部凹陷的构造热历史进行了分析和研究,分析了凹陷内由南到北4口井的单井热演化历史并模拟了东营组顶部的剥蚀量.研究表明,热流演化随地质历史的发展是逐渐减小的,但在凹陷的不同部位减小的程度不同;新生代早第三纪的热流值很高,表明当时的地壳构造运动活动强烈;从东营组地层的剥蚀情况看则凹陷南北差异明显,凹陷南端构造抬升引起的地层剥蚀量比北端大得多.

关键词: 磷灰石裂变径迹, 热历史, 地温梯度, 剥蚀量, 辽河盆地

Abstract: Apatite samples from four wells in the eastern depression of Liaohe Basin were analyzed by fission track method.The lengths of confined fission track were used as a geothermometer to analyze the thermal history of each of the four single well and the erosion thickness of Dongying formation.Thus,the thermal-tectonic evolution of the depression understood by interpretation of the results.It points out in this paper that paleoheat flow decreases with the evolution of the basin,but inconsistent in different part of the depression.The studies showed that the heat flow in the Paleogene period was very high(-113.4m W/m),which was consistent with the intensive tectonic movements.The erosional thickness of Dongying formation is larger in the southern part of the depression (1567m)than that of the northern(611m).

Key words: apatite fission track, thermal history, thermal gradient, erosion thickness, Liaohe Sasin