雅鲁藏布江缝合带中的蛇绿岩在西藏南部不同地段，表现形式并不相同。通过对缝合带中段的构造特征及蛇绿岩套组合特征的深入研究，认为印度板块的大陆地壳北缘具有特殊的波状弯曲的几何边界——中段的东西两端为向北突出的犄角，构造结之间为向南弧形突出的边界。这种特殊的边界条件，在新特提斯洋俯冲碰撞过程中，新特提斯洋首先在突出结点处完成关闭，而发生南北大陆的碰撞；而位于结点之间的洋壳则以结点为中心分别逐渐向南凸的弧形中心扩展，发生结点之间洋壳的关闭和大陆的碰撞；但由于陆壳的刚性和结点的约束，不同长度的南北板块难以得到均衡的调整，致使结点之间南凸部分（仁布－拉孜一线）的新特提斯洋难以俯冲消减至北部欧亚大陆板块之下，而以未消失的新特提斯洋壳残留在这个特殊的位置，形成具有宽度巨大、原始结构有序、构造连续的蛇绿岩套。
The ophiolite in Yarlung Zangbo Suture Zone displays different forms with different areas in southern Tibet. With the research on tectonic characteristics and the composite feature of ophiolite in the middle Suture Zone which shows that the northern edge of Indian plate the continental crust had an overall bending wavy (for things on both sides of the peaks protruding shape, the middle of the trough to the south concave shape), Special boundary conditions that lead to the Neo-Tethys Ocean first closed and collision in the both protruding node in the process of subduction-collision, but since the two nodes begin orogeny, collision orogeny by the middle of things on both sides to move gradually, and growing at both ends. In the Indian plate two protruding between the oceanic crust as orogeny did not dive into the Eurasian continent, the ultimate in Ngamring - cloth-formed around a residual basin, in the latter part of the fold orogenic process, the whole crust Uplift, residual basin disappeared, The remnants of oceanic crust due to thrust into the exposed surface in today's middle section of the Yarlung Zangbo suture zone ophiolite.