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黄栗树—庙集断裂带是扬子地块北东缘滁州—巢湖前陆褶皱冲断带根带的重要组成部分,以韧性、脆—韧性剪切带发育为特征,变形机制属简单剪切,主干断裂形成时差异应力在150MPa,应变速率在8×10-16/s左右。它的形成演化经历了逆冲→右行走滑→正断三个阶段,断裂带中段北部的分形值高于南部。断裂带西侧“扬子型”新太古代变质基底的发现及断裂带两侧燕山期中酸性岩体同位素地球化学特征的一致性,证明它不是大别造山带与扬子地块的界线。
The Huangshu-Miao-Ji fault zone is an important component of the root zone of the Chuzhou-Chaohu foreland fold-thrust belt on the northern margin of the Yangtze block. It is characterized by ductile and brittle-ductile shear zone development. The deformation mechanism is a simple shear and trunk The differential stress at fracture formation is 150MPa and the strain rate is about 8 × 10-16 / s. Its formation and evolution experienced three stages of thrusting → right-lateral strike-slip and normal fault. The fractal values in the northern part of the middle fault zone are higher than those in the southern part. The discovery of the “Yangtze” Neoarchean metamorphic basement on the west side of the fault zone and the consistency of the isotopic geochemical characteristics of the Yanshanian mid-acidic rocks on both sides of the fault zone proves that it is not the boundary between the Dabie orogenic belt and the Yangtze block.