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大别山英山县东冲河地区大比例尺(1∶1万)地质制图和详细构造解析指出,大别地块超高压变质省最明显的构造特征,是叠加在先期挤压组构上的伸展组构,区域上表现为古老变质核杂岩几何学型式及多层低缓角度伸展拆离带,因此,局部地区在平面和横过超高压变质省的地质剖面上看到的是由不同岩片组成的构造柱或堆垛,呈现出“假单斜”。野外和显微构造观察也表明,运用构造解析方法,可以在不同尺度上判别中朝克拉通与扬子克拉通碰撞过程(240~210Ma)及超高压变质岩石折返初期产生的挤压组构、折返及抬升过程中形成的伸展组构、以及伴随超高压岩石减压退变质作用的硅铝壳岩石部分熔融作用。东冲河地区超高压岩石构造学特征为深入研究整个大别—苏鲁超高压—高压变质带的形成和折返动力学过程,提供了一个窗口,并证实了“原地”模式
The analysis of the geologic mapping and detailed tectonics of the large scale (1: 10,000) in the Dongchonghe area of the Yingshan County in the Dabie Mountains indicates that the most obvious tectonic feature of the EHP metamorphic province in the Dabie block is the extension group superimposed on the preexisting extrusion structure Therefore, some parts of the geological profiles of the metamorphic provinces in the plane and across the UHP metamorphic provinces are composed of different lithofacies Constructed columns or stacks, showing a “pseudo monoclinic.” Field observations and microstructures also show that the tectonic resolution method can be used to distinguish the crustal structures formed during the collision between the Craton and the Yangtze Craton (240-210 Ma) and the early stage of the UHP metamorphic rocks at different scales, And the extensional structure formed during the ascent, and the partial melting of Si-Al shell rocks accompanying the retrograde metamorphism of UHP rocks. Tectonic features of ultrahigh-pressure rocks in the Dongchonghe area provide a window for in-depth study of the formation and reentry kinetics of the entire Dabie-Sulu UHP-HP belt, and confirm the “in-situ” mode