摘要
以安徽运漕地区为例,从地层与岩体特征入手,结合地质—地球物理信息,开展浅覆盖区隐伏地质体三维建模研究。介绍了划分建模单元及建立地质—地球物理模型和构建最终地质体模型的过程,针对区内侵入岩、浅成侵入岩发育情况,提出采用地层与岩体并行建模的思路,通过"先分后合"的方式构建地质体三维模型。最终的成果模型反映了研究区隐伏地质体的主要物性层(建模单元)、主要断裂与褶皱构造、岩浆隆起构造的空间展布特征,模型将区域重磁、断层展布、已知矿点与闪长岩类及三叠世周冲村组叠加显示,以三维可视化的方式标识了成矿有利地段的空间位置。
On the basis of the information of geology and geophysics, by studying on the characteristics of strata and rock mass, a 3D hidden geological model in shallow-covered areas is constructed taking Yuncao area in Anhui Province as an example. It introduces how to divide the modeling units and how to construct geological-geophysical model and 3D geological model, and a parallel model of strata and intrusions and a thinking of ＂first in separation and then in combination＂ are pointed out to build the final 3D hidden geological model considering the developmental conditions of intrusion and shallow intrusive rocks in this area. It is found that the resulting-model can reveal the distributions of physical properties of hidden geological bodies, major faults, folded structures and magma bulge structure. In addition, it can display grav- ity and magnetic regional field, fault distribution, known ore occurrence, diorites and Zhouchongcun Formation to identify the spatial positions of metallogenetic favorable sections by 3D visualization.
出处
《资源调查与环境》
2015年第2期123-129,共7页
Resources Survey & Environment
基金
中国地质调查局地质调查项目"1:5万和县等五幅区调(立体地质填图示范)"(项目编号:1212011120847)资助
关键词
三维地质模型
浅覆盖区
地层
岩体
运漕
3D geological model
shallow-covered area
strata
pluton
Yuncao area
