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通过最新获取的1∶50000高精度航空磁测和航空γ能谱资料对北秦岭商南—丹凤一带(商丹段)航空地球物理场空间分布进行分析,划分了商丹段主要磁性构造单元和放射性构造单元。根据商南松树沟蛇绿岩的航磁、航空γ能谱场特征,建立了北秦岭构造带的标准蛇绿岩地球物理响应模式,利用该模式对丹凤资峪—郭家沟一带蛇绿岩范围进行了厘定,给出了丹凤蛇绿岩的地球物理学证据。同时推断了分水岭蛇绿岩和鮸鱼嘴—清油河一带基性超基性岩,认为鮸鱼嘴—清油河一带可能残存有蛇绿岩。
Based on the newly acquired 1: 50000 high-precision aeromagnetic and airborne γ-ray data, the spatial distribution of the aero-geophysical field in the Shangnan-Danfeng area of the North Qinling Mountains (Shangdan section) is analyzed, and the main magnetic structural units And radioactive building units. According to the characteristics of aeromagnetic and aeronautic gamma spectroscopy in the Songnangou ophiolite of Shangnan, a standard ophiolite geophysical response model of the North Qinling structural belt was established. By using this model, the ophthalmological responses of DanfengZiyuGuojiagou Rock range was determined, given the Danfeng ophiolite geophysical evidence. The watershed ophiolite and the Mudouzui-Qingyouhe area are also concluded as basic ultrabasic rocks, suggesting that ophiolite may remain in the Mudouzui-Qingouhe area.