Constraining Deep Geological Structures in Three-Dimensional Geological Mapping of Complicated Orogenic Belts:A Case Study from Karamay Region,Western Junggar
Yu Junjian
Wang Guocan
Xu Yixian
Guo Jisheng
Chen Xujun
Yang Wei
Gong Yiming
Chen Chao
Li Yongtao
Yan Wenbo
Xiao Long
Abstract：Three-dimensional geological mapping in the complicated orogenic belts is still in the testing stage due to inadequate geophysical and drill-hole data in the region.In this paper,we propose a method of three-dimensional geological modelling by using the measured natural profiles and the geophysical profiles under the constraints of detailed surface geological investigation data and the geology-geophysics-drilling data.The modelling reliability is evaluated based on the accuracy of the data and the spatial resolution.The surface structures are constrained by the surface geological information,including the attitudes,strati-graphic sequence and thickness,fold morphology,fault feature,and the local and regional conceptual geological models.The deep geological structures are mainly based on the geophysical profile data,in combination with proper drilling data which act as not only a test of the reliability of the geophysical interpretation but also an enhancement of the model.This paper takes the three-dimensional geological mapping of the Houshan area in Karamay as an example and discusses the detailed procedure in re-alizing the above-mentioned scheme,which shows both high efficiency and operability.
Keywords：orogenic beltthree-dimensional geological mappingthree-dimensional geological modelgeological sectiondeep geological structureconstraining methodgeophysics
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：13( 407-418,424 )