The Nalati - Hongliuhe suture as the suture zone of the Kazakhstan- Junggar plate and the Tarim-North China plate occupies a significant position in the Western Tianshan orogen.Its characterics were investigated using such as structural geometry, structural kinematics,structural petrology,structural dynamics and structural rheologics methods. Our results show that the mainly tectonic style of the suture zone is a large-scale extrusion-cut tectonic system along NEE,which become strike-slip tectonic system during the progressive deformation.Its dominant deformation mechanism is central-deep level transpressional deformation .Its deformation period is late Devonian to Early Carboniferous when the oblique continent-continet collision happened between the Kazakhstan- Junggar plate with Ili-Isaik tiny plate and the Tarim-North China plate with Southern Tianshan tiny plate.Compressin-shear structure systems underwent three deformation stages:oblique thrusting ductile shear deformation in the syn-collision stage,ductile-brittle shear deformation in the late-collision stage,the left-lateral strike-slip ductile deformation in the post-collision stage.The temperature and pressure of the deformation suggested that the mylonites formed in the middle-low greenschist facies metamorphic conditions.Structural dynamic analysis indicated that the suture zone is a structure belt with large-scale dynamic characteristics.The main deformation became pure shear east from the simple shear west gradually.which proved the boundary between the Kazakhstan- Junggar Plate and the Tarim-North China Plate was an oblique convergence boundary mainly characterized by compressin-shear.%那拉提-红柳河板块缝合带主体构造组合样式为NEE向展布的巨型挤压—剪切构造系统,递进变形过程中逐渐转化为走滑构造系统,主导变形机制为中深部层次的“转换压缩变形”,主变形期对应于晚泥盆世至早石炭世初哈萨克斯坦-准噶尔板块伊犁-伊赛克湖微板块与塔里木-华北板块南天山微板块间的斜向陆陆碰撞缝合带内挤压-剪切构造系统经历了3个主要变形阶段:早期(同碰撞期)斜向逆冲推覆型韧性剪切;中期(碰撞后期)脆韧性正向斜滑剪切;晚期(后碰撞期)韧脆性左旋走滑剪切缝合带内糜棱岩系主体形成于中低绿片岩相变质条件构造动力学分析显示,缝合带具巨型构造动力特征,主导变形由般剪切占主导作用逐渐向纯剪切占主导作用转化,反映哈萨克斯坦-准噶尔板块与塔里木-华北板块间是以碰撞挤压-剪切为主的斜向汇聚方式.
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