http://www.sciencedirect.com/science/article/pii/S1674987111000478 |
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| Authors: | Minghui Ju Chongbin Zhao Tagen Dai Jianwen Yang |
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| Institution: | 1. Computational Geosciences Research Center, Central South University, Changsha 410083, China;The Key Laboratory of Chinese Education Ministry for Non-ferrous Metal Metallogenic Prediction,Central South University, Changsha 410083, China
2. Department of Earth and Environmental Sciences, University of Windsor, Canada |
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| Abstract: | Convective heat transfer associated with the circulation of pore-fluid in porous rocks and
fractures within the upper crust of the Earth is substantial when the temperature gradient is sufficiently
high. In order to understand the process of Sn-polymetallic mineralization in the Dachang
ore district of Guangxi, a finite element method has been used in this study to simulate both
pore-fluid flow and heat transfer in this district. On the basis of related geological, tectonic and
geophysical constraints, a computational model was established. It enables a computational simulation
and sensitivity analysis to be carried out for investigating ore-forming pore-fluid flow and other
key factors that may affect hydrothermal ore genesis in the district. The related simulation results
have indicated that: (1) permeable fault zones in the Dachang ore district can serve as preferential
pathways for pore-fluid flow on a regional-scale; and (2) the pore-fluid flow can affect the salinity distribution. This latter factor is part of the reason why Sn-polymetallic mineralization has taken
place in this district. |
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| Keywords: | Finite element modeling Dachang ore district Hydrothermal
mineralization Salinity-induced buoyancy |
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