3D-Numerical Modeling of Coupled Geodynamic Processes and Mineralization at the Contact Zones of Complex Plutons: Taking the Anqing Deposit , Anhui Province, China
详细信息
- 责任者：Zhao Yilai (Computational Geosciences Research Centre ; Central South University ; Changsha 410083 ; China) ; Liu Liangming
- 刊名：Geotectonica et Metallogenia
- 出版年：2011
- 卷期：35(1)
- 关键词：铜矿 ; copper ores ; 成矿动力学 ; metallogenic dynamics ; 安徽 ; Anhui Province
- 页码：p.128-136
- 图表：8 illus., 1 table, 30 refs.
- 分类号：1001
- issnNo：ISSN1001-1552
- isbnNo：CN44-1595/P
摘要
The Anqing Cu deposit is one of the most important skarn-type deposits in the lower-middle Yangtze metallogenic belt. Most of the orebodies are located in the contact zones of intrusions with complex geometries. Using a numerical modeling approach, this paper studies the geodynamic mechanism and principal ore-controlling factors responsible for the formation of the orebodies (in particular their locations). Firstly, the three-dimensional entity model and computational mesh of the pluton and wall rocks for the Anqing Cu deposit were constructed using a combination of software AutoCAD and GOCAD. The 3D mesh was then converted into a format that can be imported into the modelling software, FLAC3D, by means of C++ programming. Finally, the coupled mechanical-thermal-hydrological numerical modeling of hydrothermal metallogenic processes for the Anqing Cu deposit was performed in FLAC3D. The results show that mineralization and locations of orebodies at the Anqing Cu deposit reflect the outcomes of the mechanical-thermal-hydrological interactions after magmatic intrusion.