北京平原区新构造运动研究  

The Study of Neotectonic Movement in Beijing Plain Area

作　　者：张磊[1] 王继明[2] 张晓亮[1] 白凌燕[1] 刘振华[1] 王斌强[1] 梁亚南[1] 

机构地区：[1]北京市地质调查研究院,北京100195 [2]北京市地质矿产勘查开发局,北京100195

出　　处：《城市地质》2017年第4期6-15,共10页Urban Geology

基　　金：中国地质调查局项目资助(12120113012000)

摘　　要：本文选取北京平原区3条重要的控盆活动断裂,北西向的南口—孙河断裂,北东向黄庄—高丽营断裂和顺义断裂,对其第四纪以来的活动性进行深入研究。研究表明,目标断裂活动性第四纪以来均表现为较强—弱—强—较强的特点。在此基础上,对各条断裂活动性的共性特征进行总结,并以此表征本区新构造运动的特点。本区新生界以来构造运动显著,古近纪时期,北京平原形成"两隆一凹"的构造格局;新近纪时期,该构造格局解体,北京冲积平原初步形成;第四纪以来,新构造运动继承性发展,形成多个第四纪断陷盆地,诠释了构造与建造之间的密切关系。同时,对北京地区构造-气候耦合关系进行深入探讨,明确了构造-气候旋回具有0.4Ma的周期性,中更新世以后,0.1Ma的准周期开始成为主导周期的特点。该特点与青藏高原地区及中国大陆东部的新构造运动,具有较好的对应关系。In this paper, three important faults, which controlled the basin in the Beijing plain area, namely Nankou-Sunhe fault with strike of northwest direction, Huangzhuang-Gaoliying fault and Shunyi fault with strike of north-east direction, are studied, focusing on the Quaternary activity. The analysis results show that the target fault activity had a strong - weak - strong - strong characteristic since the Quaternary. On this basis, the common characteristics of each fault activity were summarized, and the characteristics of the neotectonic movement in this area were characterized. The neotectonic movement had been formed since the Neoproterozoic, and the tectonic pattern of the ＂two uplifts and one concave＂ was formed in the plains in the Paleogene. In the Neogene period, the tectonic pattern was disintegrated and the Beijing alluvial plain formed its initial shape. Since Quaternary, neotectonic movement had inherited the development, and formed a number of Quaternary rift basin, which interpreted the close relationship between the tectonic and construction. Meanwhile, the tectonic-climatic coupling relationship of Beijing area was discussed in depth, and it was clear that the tectonic-climate cycle had a periodicity of 0.4Ma, and after Middle Pleistocene, the quasi-period of 0.1Ma began to be the dominant cycle. This feature had a good correspondence with the Qinghai-Tibet Plateau region and the neotectonic movement in the eastern part of China mainland.

关 键 词：新构造运动 活动断裂 第四纪 磁性地层 北京 

分 类 号：P542[天文地球—构造地质学]