METHOD FOR INVESTIGATION OF ENVIRONMENTAL CHANGE OF THE MOUNTAIN BUILDING PROCESSES IN OROGENIC BELTS
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摘要: 造山带演化可分为两个阶段：造山期和成山期。造山期地质调查一直是我国区调工作的重点，调查的内容以区内基础地质特征研究为主。而成山期地质调查过去一直被忽视，这也正是当前“扩大区调服务领域”所要探讨的问题。造山带成山期区域地质调查重点是：①造山带隆升的过程与特点；②山脉隆升的环境效应；③造山带现代构造运动与地质灾害。笔者结合东昆仑造山带１∶２５万冬给措纳湖幅和兴海县幅区调，对成山运动和环境变化进行讨论。Abstract: The evolution of an orogenic belt may involve two phases: the orogenic phase and mountain building phase. Regional geological survey in China has long centered on the geological survey of the orogenic phase, with emphasis on the study of the basic geological features in a region. On the other hand, the geological survey of the mountain building phase has long been neglected. This is precisely the problem that should be discussed in the present situation of “enlarging the service scope of regional geological survey”. The main aspects for the regional geological survey of the mountain building phase of the orogenic belt are: （1） the process and characteristics of the uplift of the orogenic belt; （2） environmental effect of the mountain uplift; （3） recent tectonic movement and geological hazards in the orogenic belt. On the basis of the 1∶250 000 regional surveys of the Dongeiconag Lake Sheet and Xinghai County Sheet of the orogenic belt in the East Kunlun Mountains, the authors discuss the mountain building processes and environmental change of the orogenic belt.
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Key words:
- orogenic belt /
- mountain building processes /
- environmental change
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