地球与行星物理论评（中英文）2026，Vol.57Issue(6)：627-646,20.DOI:10.19975/j.dqyxx.2025-065
大凉山构造带变形特征与深部结构研究综述
Review of deformation characteristics and deep structure of the Daliangshan tectonic belt
摘要
Abstract
As a tectonic transfer and transition unit between the Yangtze Block and the eastern(southern)mar-gin of the Qinghai-Xizang Plateau,Daliangshan tectonic belt plays a pivotal role in accommodating the differential movements between the Chuandian Block and the South China block.Its deep structure serves as the core for deci-phering the deformation mechanisms underlying the southward expansion of crustal material in the Qinghai-Xi-zang Plateau following the obstruction of its eastward escape.This paper systematically synthesizes existing re-search findings from multiple perspectives,including tectonic evolution history,block kinematic characteristics,seismicity,and geophysical deep structural exploration.In terms of tectonic evolution,the belt underwent a four-stage,multi-mechanism superimposed process from the Late Mesozoic to Cenozoic,controlled by multiple far-field dynamic sources such as the subduction of the Pacific Plate and the collision between the Indian and Eurasian Plates.Relative to the South China block,Daliangshan tectonic belt is generally dominated by counterclockwise ro-tation,with a multi-level strain transfer and adjustment system developed within it.Seismic activities are concen-trated along the boundary fault zones,while seismicity within itself is weak.However,prominent seismic gaps and strongly locked segments are identified in fault zones such as the Anninghe-Zemuhe fault zone and the Daliang-shan fault zone,implying their potential to generate strong earthquakes.Geophysical exploration of deep structures reveals distinct high-velocity and low-velocity anomalous zones in the crust,with significant differences in north-south trending tectonic deformation and stress field characteristics.The crustal material migration hindered by ri-gid blocks is likely to exhibit complex flowing paths.The research results provide additional scientific insights for investigating the dynamic uplift mechanism of the eastern(southern)margin of the Qinghai-Xizang Plateau and as-sessing the potential risk of strong earthquakes in the region.关键词
大凉山构造带/构造演化历史/块体运动与变形特征/地震活动性/深部结构探测Key words
Daliangshan tectonic belt/tectonic evolution history/block motion and deformation characteris-tics/seismicity/deep structure exploration分类
天文与地球科学引用本文复制引用
石伟,武振波,喻光祺,周卿..大凉山构造带变形特征与深部结构研究综述[J].地球与行星物理论评（中英文）,2026,57(6):627-646,20.基金项目
国家自然科学基金资助项目(42574121,42174077) Supported by the National Natural Science Foundation of China(Grant Nos.42574121,42174077) （42574121,42174077）
