沂沭断裂带研究进展综述

Review on Research Progress of Yishu Fault Zone

为了更好地了解沂沭断裂带的研究进展,整理分析了大量前人研究资料,对其深部结构特征、构造形成演化、成盆成矿作用等方面做了阐述。认为进一步研究应综合利用多地球物理场深部探测技术,获取高精度深部结构信息,研究沂沭断裂带岩石圈流变结构、构造断裂体系分布,实现沂沭断裂带地质结构"透明化"。加强沂沭断裂带及周边韧性剪切带的时代、断裂带的同位素地质,以及沿断裂带中生代变动与古老基底变动的关系研究。开展对沂沭断裂带地区晚中生代岩浆时空演化、成岩构造动力学背景以及与金及多金属矿成矿作用之间的耦合关系的研究,并对比沂沭断裂带内及两侧金及多金属矿成矿作用异同。断裂带各段盆地及控油机理的差异、断裂带与两侧金刚石矿带的关系也值得进一步研究。

In order to better understand the research progress of the Yishu fault zone,a large number of research data have been collated and analyzed.Structural characteristics,the formation and evolution of the fractures,and the basin forming and mineralization in the deep part have been elaborated.Multi geophysical field deep detection techniques should be used comprehensively to obtain high precision deep structural information,study the distribution of lithosphere rheological structures and tectonic fault systems in the Yishu fault zone,realize the"transparency"of geological structures of the Yishu fault zone,strengthen the study of the relationship between the age of the ductile shear zone,the isotopic geology of the fault zone,and the relation between the Mesozoic changes and the changes of ancient basement along the fault zone.The spatiotemporal evolution of magma in the late Mesozoic,dynamic background of diagenetic structures,and the coupling relationship with the gold and polymetallic ore mineralization in the Yishu fault zone have been studied.The similarities and differences between gold and polymetallic ore mineralization in and on both sides of the belt have been compared.The differences in basins and oil control mechanisms in each segment of the fault zone,and the relationship between the fault zone and diamond belts on both sides are also worth further study.