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通过CCSD-MH、卫星孔的岩性-构造剖面和苏鲁造山带中榴辉岩-超镁铁质岩的产出、深俯冲/折返过程的岩石的塑性流变特征和变形序次的分析、俯冲-折返过程中流体作用及变质化学地球动力学对流变学行为的制约,以及韧性剪切作用形成的折返年代学时限,提出苏鲁超高压变质地体为面型深俯冲/折返杂岩带组成的穹形挤出推覆岩片、叠置在扬子陆块之上;根据岩石变形微构造及组构的分析,重塑超高压变质岩石深俯冲阶段、折返早期、折返主期和折返后期的塑性流变;提出深俯冲的物质沿板块汇聚边界的多层隧道呈多重/分片样式“挤出”的折返模式,并认为在折返初期开始(230～220Ma)和折返主期(220～200Ma)形成的透入性韧性剪切是俯冲岩片挤出的重要机制;提出郯庐走滑断裂的形成对苏鲁高压/超高压变质地体演化的影响。
Through the CCSD-MH, the lithology-tectonic section of the satellite hole and the eclogite-ultramafic rocks in the Sulu orogenic belt, the plastic rheological characteristics and deformation order of the rocks during deep subduction / reentry , The fluid effect during the subduction-reentry process and the metamorphic chemical geodynamics on the rheological behavior, and the reincarnation chronology formed by the ductile shear, the authors propose that the ultra-high-pressure metamorphic terrane of Sulu is a facies deep subduction / infill complex belt According to the analysis of the deformation and microstructure of the rocks, the ductile deformation of ultrahigh-pressure metamorphic rocks during the deep subduction stage, the early stage of reentry, the main stage of reentry and the plasticity of the late stage of reentry The multi-layer tunnels with deep subducting material converging along the plate boundaries show a multi-layered / exfoliated pattern of “extrusions”. It is believed that the multi-tunnels with deep subduction at the beginning of reentry (230 ~ 220Ma) 200Ma) is an important mechanism for the extrusion of subducted slab. The effect of the formation of the Tanlu slip-strike fault on the evolution of the high-pressure / ultrahigh-pressure metamorphic terrain is proposed.