南迦巴瓦地区东喜马拉雅构造结为一由边界断裂围限的强烈变形变质地体,其东、西边界分别为左行为主的东久——米林断裂和右行的阿尼桥断裂,北边界由一系列北西向断裂组成,沿边界分布雅鲁藏布江缝合带及日喀则群弧前沉积的残余。构造结变质地体为印度大陆高喜马拉雅岩系的角闪岩相——麻粒岩相正负片麻岩,构造结外侧为欧亚大陆岩系。构造结西边界的东久——米林断裂为——北东走向左行剪切带,主要由强烈剪切变形形成的糜棱状岩石组成,运动性质为北西盘上升的左行逆冲;构造结内部构造形态为南南西向逆冲推覆构造体系。边界断裂的走滑与构造结内部的缩短运动形式协调一致, The East Himalayan tectonic knot in the Namjagbarwa area is a strongly deformable metamorphic body surrounded by boundary faults. The east and west boundaries are the Dongju-Milling fault and the Aniqiao fault on the right-hand line, respectively. The northern boundary consists of a series of NW faults, along which the remnants of the Yarlung Zangbo suture zone and the Shigaze Group arc pre-arc deposits are distributed. The tectonically-altered metamorphic body is hornblende facies-granulite facies-gneisses of the High Himalayan series in the Indian continent. The outcrops of the tectonic knots are Eurasian continental rocks. The East-Longmian-Maling fault is the north-easterly strike-slip shear zone and is composed of mylonitic rocks formed by intense shear deformation. The movement is the left-lateral thrusting up of the northwestern plate. The structure of the structural knot is the south-south-west thrust nappe structure system. The strike-slip of the boundary fault is consistent with the shortened form of movement inside the structural knot,