摘要
三联点是三个板块边界的交点,三个板块在三联点附近的相互作用,形成了复杂的地质构造,记录了板块相互运动的历史,为研究板块之间的相互作用提供了良好的地质实验室.前人最初利用地震、测深、地磁等数据研究三联点的演化历史.随着探测与计算技术的发展,GPS数据、层析成像及数值模拟等方法应用到三联点的研究中.本文通过总结前人对不同类型三联点的研究,统计了全球已发现的七种类型的19个三联点,论述不同类型三联点演化过程,给出了数值模拟在三联点相关研究方面的应用.目前,三联点的相关研究主要集中在相对简单的RRR型、RTT型及FFT型这三类三联点,且三联点的数值模拟研究主要针对RRR型三联点.在今后的研究中,应充分利用越来越丰富的地质与地球物理相关的观测资料,通过数值模拟等方法,对其他类型三联点的形成及演化规律等进行详细的研究.
Triple junctions are points where three plate boundaries meet. Three plates at the triple junction form a complex geological tectonics,which is a natural laboratory to study the interactions of plates. The evolution of triple junctions has been studied by using the earthquake, sounding and geomagnetism data. With the development of detection and computation,GPS data,tomography and numerical simulation have been applied to the study of triple junctions. In this paper,by summarizing the previous research on different types of triple junctions,we count 19 of seven types of triple junctions that have been found in the world,discuss the evolution process of different types of triple junctions,and get the application of numerical simulation in the study of triple junctions.At present,we can find the research of triple junctions focused on the RRR, RTT and FFT triple junctions, and the numerical simulation of the triple junctions mainly for the RRR triple junction.In the future,we should study the formation and evolution of other types of triple junctions in detail by making full use of the more abundant geological and geophysical observation data and numerical simulation.
作者
王振山
魏东平
WANG Zhen-shan;WEI Dong-ping(Key Laboratory of Computational Geodynamics,CAS,Beijing 100049,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《地球物理学进展》
CSCD
北大核心
2018年第5期1834-1843,共10页
Progress in Geophysics
基金
国家自然科学基金项目(41474086)
中国科学院与国家外国专家局创新团队国际合作伙伴计划项目(KZZD-EW-TZ-19)资助
关键词
三联点
板块边界
演化过程
数值模拟
triple junction
plate boundary
evolution process
numerical simulation
