陕渝黔桂1800km超长探测剖面重力异常场特征及深部地壳结构探榷

发布时间：2018-04-13 06:47

本文选题：陕—渝—黔—桂 + 重力异常场　；参考：《地球物理学报》2016年11期

【摘要】：通过对跨越华北克拉通、秦岭造山带、扬子克拉通几大地质构造单元的,北起陕西榆林经秦岭过重庆鱼泉、贵州贵阳并向南到广西凭祥全长1810km超长重力探测剖面的数据进行处理分析和解释,构建了沿剖面的二维地壳密度结构模型,并详细分析了沿剖面壳内各界面与Moho界面展布的深部结构和构造特征、构划出了该剖面的深部断裂分布,探讨了剖面辖区跨越的克拉通、造山带、接触带或耦合带等一系列的区域构造的差异,同时对其可能的地质构造含义进行初步了解释,以期能对深化认识该剖面跨越地区的地壳结构、构造单元划分及动力学等研究,提供相关重力场的依据.
[Abstract]:By crossing the North China Craton, the Qinling orogenic belt, and the Yangtze craton several major geological tectonic units, Yulin, Shaanxi Province, crossed the fish spring of Chongqing through the Qinling Mountains in the north.The data of the full-length 1810km ultra-long gravity survey section from Guiyang, Guizhou Province to Pingxiang, Guangxi, are processed and interpreted, and a two-dimensional crustal density structure model along the section is constructed.The deep structure and structural characteristics of each interface and Moho interface in the section are analyzed in detail, the deep fault distribution of the section is constructed, and the cratonic and orogenic belts that cross the section area are discussed.The differences of a series of regional structures, such as contact zone or coupling zone, are also given in this paper. The possible geological tectonic implications are also preliminarily explained in order to deepen the understanding of the crustal structure, tectonic unit division and dynamics of the cross region of the section.Provide the basis for the relative gravity field.
【作者单位】：中国科学院地质与地球物理研究所;吉林大学地球探测科学与技术学院;中国地质科学院矿产资源研究所;中国地震局地球物理研究所;
【基金】：扬子克拉通壳幔结构与深层动力过程(41674102)资助
【分类号】：P312;P542

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