论文部分内容阅读
根据地层分布、沉积岩相建造、构造-岩浆活动、混杂堆积、深大断裂,蛇绿岩等残留标志,对商洛地区古板块构造进行了初步探讨,并将该区划分成华北板块南缘带、北秦岭古洋板块带以及南秦岭镇安-公馆陆缘古海盆等单元及其次级单元.指出杨斜-商丹等大断裂为俯冲带,东江口-山阳-木家垭大断裂为地缝合线等.最后探讨了该区古板块的形成、演化和找矿.
Based on the stratigraphic distribution, sedimentary facies, tectono-magmatic activity, mixed accumulation, deep faults, ophiolite and other residual markers, the paper discusses the ancient plate tectonics in Shangluo area, and divides the area into the southern margin of North China plate, Qinling Palaeo-plate belt and the South Qinling Zhen-ancillary aqueduct and other sub-units of the continental shelf and pointed out that the Yangpo-Shangdan fracture is the subduction zone, and the East River estuary-Sanyang-Mujiaya large fault to ground suture Etc. Finally, the formation, evolution and prospecting of the old slabs in the area are discussed.