摘要
综合区域地质、岩石物性和航磁资料的分析，认为石渠－甘孜－雅江剩余布格重力正异常带可能是被“挤入”西康群之下、埋藏于深部的前古生代离散陆块与二叠纪玄武岩及“义敦群”存在的综合反映。该异常带的连续延伸，说明甘孜－理塘构造带南段的主体部分已由北西转至南西走向。该重力异常带位置是重要而明显的构造分区界线。
A synthetical analysis of data on regional geology,physical property of rocks and aeromagnetic anomaly indicates that Shiqu-Garze-Yajiang residual Bougeur anomaly may result form the Prepaleozoic divergent landmass,Permian basalt and Yidun Group which subducted under the Xikang Group.Trend of the anomaly zone representing a regional structural boundary is a reflection of turning(from NW to SW) of the southern district of Garze-Litang structural zone.
出处
《四川地质学报》
1994年第1期8-16,共9页
Acta Geologica Sichuan
关键词
重力正异常带
密度层
构造分界线
possitive gravity anomaly zone,density layering,regional structural boundary
