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研究俯冲带过程是发展板块构造理论的关键.板块界面相互作用是实现地球表层与内部之间物质和能量交换的基本机制.将俯冲隧道模型拓展到大陆碰撞造山带,能够透视大陆俯冲带构造过程及其产物.由长英质到镁铁质岩石组成的大陆地壳于不同深度从大陆岩石圈上部拆离并迁移进入大陆俯冲隧道,由橄榄岩组成的大陆岩石圈地幔楔底部也受到俯冲板片刮削进入俯冲隧道.大小不同的地壳和地幔碎块在俯冲隧道中受到角力流作用向上或向下运动,导致它们经历不同程度的变质作用,并伴有不同程度的变形乃至局部深熔.在俯冲隧道中壳源岩石与幔源岩石之间发生机械混合,结果形成了超高压变质混杂岩.它们在折返到地壳层位时与低级变质岩拼合到一起,形成构造混杂岩,结果在同一造山带出露有不同变质程度的岩石.俯冲陆壳基底花岗岩和上覆沉积物衍生的熔/流体与上覆大陆岩石圈地幔楔橄榄岩之间发生化学反应,实现了大陆俯冲隧道中的壳幔相互作用.超高压变质岩原岩性质支配了碰撞造山带的类型、超高压变质地体的大小和折返速率.
The study of the subduction zone is the key to the theory of plate tectonics.The interfacial interaction of plate and plate is the basic mechanism for the exchange of matter and energy between the surface and the interior of the earth.The extension of the subducting tunnel model to the continental collision orogen reveals the tectonic process of the continental subduction zone And their products.The continental crust, consisting of mafic-mafic rocks, detached from the upper part of the continental lithosphere at different depths and migrated into the continental subduction tunnel. The bottom of the continental lithospheric mantle wedge composed of peridotites was also subjected to subduction plates Scraping into subduction tunnels. Crust and mantle fragments of different sizes are subjected to upward and downward wedge forces in subduction tunnels, causing them to undergo different degrees of metamorphism accompanied by varying degrees of deformation and even local deep-melting. Mechanical mixing occurs between crustal source rocks and mantle rocks in the tunnel, resulting in the formation of ultrahigh-pressure metamorphic melanges that join together with lower metamorphic rocks to form tectonic mélanges on the same orogenic belt Exposed to rocks with different degrees of metamorphism Subducted continental crust basement granite and overlying sediment-derived melt / flow And the overlying continental lithospheric mantle wedge peridotite chemical reaction between the realization of the continental subduction tunnel crust-mantle interaction.The ultrahigh pressure metamorphic rock dominated the nature of the collision orogenic belt type, ultrahigh pressure metamorphic body size and Rebound speed.