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经过多年的区域地质调查和第四纪环境演变的分析,对庐山芦林盆地大校场谷口剖面松散沉积物中变形砾石进行岩石显微构造学的研究。发现变形砾石内部存在特殊的微裂隙组构,呈现出错裂-横裂-劈裂-爆裂-复裂-应力矿物等的复杂组合,其结构面特征反映出显微构造形迹的力学性质是互为转变的。通过物理模型分析和试验变形比对等综合材料证明,变形砾石是遭受了既密集、又分散、还具有同时发生作用的长时期的多边界外力条件及平衡力系,内部形成破裂其应力传递过程和性质改变与变形形迹转变及其做功连续扩展,是由低于疲劳极限的具有脉动性作用微弱应力造成的。地球陆表过程和地质环境要素及其动力学机制的研究认为,只有第四纪晚期地质事件的低温、低应力及其分散密集的多颗粒平衡力系的缓慢长期及间歇脉动作用的边界条件才能满足、符合及形成这种特殊的岩石变形构造,为中国东部山地可能遭受第四纪冰冻环境及冰川作用提供了新的科学证据。
After years of regional geological survey and Quaternary environmental evolution, the study on the microstructure of deformed gravel in the loose sediments in the Tankou section of the Lushan Mountain Lüling Basin has been carried out. It is found that there are special micro-fracture structures in the deformed gravel, showing the complicated combination of miscracking-lateral-splitting-burst-fracture-stress-mineral and so on. The structural plane features reflect that the mechanical properties of microstructural features are Transformed. Through the physical model analysis and experimental deformation ratio comparison, it is proved that the deformed gravel is a long-term multi-boundary external force condition and balance system that is both dense and dispersed and has simultaneous action, And the change of nature and the change of deformation and the continuous extension of their work are caused by the weak stress with the pulsation below the fatigue limit. The study of terrestrial land surface processes and geo-environmental elements and their dynamic mechanisms suggests that only the boundary conditions of slow long-term and intermittent pulsation of low-temperature, low-stress and their disperse dense multi-particle balance system in late-stage geological events Satisfying, conforming and forming this special rock deformation structure provides new scientific evidence that the mountainous regions of eastern China may suffer Quaternary frozen environment and glaciation.