Abstract
The Tongbai orogenic belt (TOB) is composed of six tectonic units. From south to north these units are: Tongbai gneiss rise (TGR); Hongyihe-Luozhuang eclogite belt (HLE); Maopo-Hujiazhai igneous rock belt (MHI); Zhoujiawan flysch belt (ZFB); Yangzhuang greenschist belt (YGB); and Dongjiazhuang marble belt (DMB). The geometry and kinematic images of the TOB include: the antiformal structures caused by a later uplift process, the top-to-north ductile shear structure that related to a process that the ultrahigh pressure rocks are brought to surface, the top-to-south ductile shear thrust and the sinistrial shear structures related to a south-north direction compression, and the east-west direction fold structures in the upper crust. In the view of the multistage subduction-collision orogenic belt, according to the characters of petrology and its distribution, geometry, kinematics and structural chronology in these tectonic units, tectonic evolution of the TOB can be divided into four stages: oceanic crust subduction during 400–300 Ma, continental collision during 270–250 Ma, continental deep subduction and uplift during 250–205 Ma and doming deformation during 200–185 Ma.
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Huang, S., Xu, B., Wang, C. et al. Geometry, kinematics and evolution of the Tongbai orogenic belt. SCI CHINA SER D 49, 828–838 (2006). https://doi.org/10.1007/s11430-006-0828-0
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DOI: https://doi.org/10.1007/s11430-006-0828-0