浅述地层剥蚀量恢复的基本原理与方法

Basic principles and methods of denuded strata comeback

王敏芳 黄传炎 徐志诚 吴立群

Wang Minfang Huang Chuanyan Xu Zhicheng Wu Liqun

中国地质大学 资源学院, 湖北 武汉 430074

Faculty of Earth Resources, China University of Geoscience, Wuhan, 430074, China

地层剥蚀是多期沉积盆地中普遍存在的现象,介绍了目前地层剥蚀量恢复的主要方法及各自的基本原理和优缺点,对初涉及该领域的人员有指导意义。地层剥蚀量恢复方法可以分为传统型地层剥蚀量恢复方法和新型地层剥蚀量恢复方法,前者主要包括地层对比法、沉积速率分析法和镜质体反射率法等,后者主要包括磷灰石裂变径迹分析法、沉积波动过程分析法和流体包裹体法等。最后指出,尽管恢复方法多样,却有各自的适用性,应根据研究区的具体地质特征来选择合适的恢复方法。同时,对同一研究区,可考虑综合使用多种恢复方法进行相互验证,以期恢复结果更加准确。

Denuded strata are the common phenomena in sedimentary basins. We introduce the main methods, principles, advantages and disadvantages of denuded strata comeback, which can be helpful to the people who just first deal with this field. Methods of denuded strata comeback can be divided into two sorts:traditional and new type denuded strata comeback methods. The former includes strata contrast, sedimentary ratio analysis, vitrinite reflectance, etc.; the latter includes thermal annealing of fission tracks in apatite, depositional and erosional processes, and cosmic genesis nuclide analysis, etc. At last, we point out there is no method can be suitable for each geological environment and research area, we can use different methods to make the outcome to be more precise