Rheology of continental lithosphere and seismic anisotropy  

作　　者：Shengsi SUN Yunpeng DONG Yixi LI Yihai YANG Chao CHENG Bo HUI Bin ZHANG Rutao ZANG 

机构地区：[1]State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi’an 710069,China [2]Shaanxi Earthquake Agency,Xi’an 710068,China

出　　处：《Science China Earth Sciences》2024年第1期31-60,共30页中国科学（地球科学英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.42022016,41930217 and 42372257);the Youth Innovation Team of Shaanxi Universities.

摘　　要：Rheology of rocks controls the deformation of the Earth at various space-time scales,which is crucial to understand the tectonic evolution of continental lithosphere.Researches of rock rheology are mainly conducted via high-pressure and hightemperature rheological experiments and multi-scale observations and measurements of naturally deformed rocks.At present,a large amount of data from such kinds of studies have been accumulated.This paper first provides an up-to-date comprehensive review of the rheological mechanisms,fabric types and seismic properties of the main rock-forming minerals at different depths of continental lithosphere,including olivine,orthopyroxene,clinopyroxene,amphibole,plagioclase,quartz and mica.Then,progress in high-pressure and high-temperature experiments and natural deformation observations is introduced,mainly regarding the rheological strength and behavior,seismic velocity and anisotropy of lithospheric mantle peridotite,eclogite,mafic granulite,amphibolite and felsic rocks.Finally,by taking the Tibetan Plateau as an example,the application of rock rheology for quantitative interpretation of seismic anisotropy data is discussed.The combination of mineral deformation fabrics and seismic anisotropy is expected to make an important breakthrough in understanding the rheological properties and structure of continental lithosphere.

关 键 词：LITHOSPHERE Mineral fabric RHEOLOGY Seismic velocity ANISOTROPY 

分 类 号：P31[天文地球—固体地球物理学]