作　　者： ; ; ;

机构地区： 中国科学院广州地球化学研究所

出　　处： 《地质与勘探》 2004年第1期36-40,共5页

摘　　要： 东秦岭构造演化及地质成矿比较复杂,在认识上还存在分歧。笔者从板块构造学、地球物理学、事件地层学等多学科观点出发,提出了一些新的看法。东秦岭发育的区域性深大断裂主要有9条,它们均具有多期次、长期性活动的特征;垂直板缘构造带走向,从北向南可划分出低变质变形带、强变质变形混杂带、刘岭复理石推褶构造带、大别地块、断褶推滑构造带等五个地质构造带;东秦岭的地质构造发展演化经历了7个阶段,即华北、杨子板块形成、漂移阶段;华南板块形成阶段;板缘增生带形成阶段;板块对接阶段;剪切走滑阶段;板块挤压推覆阶段以及断块掀斜阶段。 The structural evolution and geological mineralization in the eastern Qinling area are very complicated on which many geologists have cognitive divergence. This paper puts forward some new opinions from a multidisciplinary point of view such as plate tectonics, geophysics and event stratigraphy, et al. It is recognized that there are mainly 9 regional abyssal faults in east Qinling with the features of poly-phase and long-term activity. The east Qinling orogen can be divided into 5 geological structural belts vertical to the strike of plate-boundary tectonic zone from north to south like low metamorphic-deformational belt, strong metamorphic-deformational belt, Liuling flysch overriding-fold belt, Dabie massif and fracture-fold overriding-slip belt. The area has undergone 7 evolution stages: forming and drift of north China plate and Yangtze plate, forming of south China plate, forming of plate-boundary accreting zone, plate collision and link, shear strike slip, compressive nappe and block tilted.

关 键 词： 地球物理 构造分带 演化 区域性深大断裂 秦岭

领　　域： [天文地球] [天文地球] [天文地球] [天文地球]