摘要
碎屑颗粒热年代学以沉积物中未重置的低封闭温度的矿物颗粒为研究对象 ,是一种在时间上把山体抬升、剥露与盆地沉积联系起来的年代学方法。该方法既可用于研究山体基岩区冷却、剥露的历史 ,也可用于研究沉积源区、制约古生物缺乏地层的沉积年龄和进行地层对比。简要回顾了该方法的发展历史 ,并介绍了这一方法的基本原理、数据处理方法和应用实例 ,评述了碎屑颗粒热年代学方法的优点及存在的问题 ,介绍了在我国新构造活动研究中的应用前景。
The unreseted mineral grain with low closure temperature (such as zircon and aptite FT and felspar Ar-Ar dating system) located in clastic sedimentary sequence records much information about the process of mountain building and basin deposition. So it becomes a main object of detrital grain thermochronology. Detrital grain thermochronology is a promising method for recovery of basement exhumation history, for determining provenance and the maximum deposition age and for stratigraphic correlation. We first make retrospect of the development of this method. Then we introduce the principle of this method, the statistic methods used in detrital grain thermochronology study and the application of detrital grain thermochronology to geology in brief. At last the advantage and disadvantage of this method are evaluated and the prospect of application to researching Cenozoic tectonics in our country is commented.
出处
《地震地质》
EI
CSCD
北大核心
2000年第B12期25-36,共12页
Seismology and Geology
基金
中国地震局地质研究所论著! 2 0 0 0B0 0 6 3
