Numerical modelling of ore-forming dynamics of fractal dispersive fluid systems
文献类型：期刊论文
| 作者 | Deng, J; Fang, Y; Yang, LQ; Yang, JC; Sun, ZS; Wang, JP; Ding, SJ; Wang, QF |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2001-06-01 |
| 卷号 | 75期号:2页码:220-232 |
| 关键词 | fluid system fractal dispersion point-source illuviation model ore-forming dynamics numerical simulation |
| ISSN号 | 1000-9515 |
| 文献子类 | Article |
| 英文摘要 | Based on an analysis of the fractal structures and mass transport mechanism of typical shear-fluid-ore formation system, the fractal dispersion theory of the fluid system was used in the dynamic study of the ore formation system. The model of point-source diffusive illuviation of the shear-fluid-ore formation system was constructed, and the numerical simulation of dynamics of the ore formation system was finished. The result shows that: (1) The metallogenic system have nested fractal structure. Different fractal dimension values in different systems show unbalance and inhomogeneity of ore-forming processes in the geohistory. It is an important parameter to symbolize the process of remobilization and accumulation of ore-forming materials. Also it can indicate the dynamics of the metallogenic system quantitatively to some extent. (2) In essence, the fractal dispersive ore-forming dynamics is a combination of multi-processes dominated by fluid dynamics and supplemented by molecule dispersion in fluids and fluid-rock interaction. It changes components and physico-chemical properties of primary rocks and fluids, favouring deposition and mineralization of ore-forming materials. (3) Gold ore-forming processes in different types of shear zones are quite different. (1) In a metallogenic system with inhomogeneous volumetric change and inhomogeneous shear, mineralization occurs in structural barriers in the centre of a shear zone and in geochemical barriers in the shear zone near its boundaries. But there is little possibility of mineralization out of the shear zone. (2) As to a metallogenic system with inhomogeneous volumetric change and simple shear, mineralization may occur only in structural barriers near the centre of the shear zone. (3) In a metallogenic system with homogeneous volumetric change and inhomogeneous shear, mineralization may occur in geochemical barriers both within and out of the shear zone. |
| WOS关键词 | GEOMETRY ; GOLD ; MECHANISMS ; DIMENSION ; GRADE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000169598600012 |
| 出版者 | GEOLOGICAL SOC CHINA |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76569]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Deng, J |
| 作者单位 | 1.China Univ Geosci, Beijing 100081, Peoples R China 2.China Univ Geosci, Wuhan 430074, Peoples R China 3.Acad Sinica, Inst Geol & Geophys, Beijing 100101, Peoples R China 4.Jilin Univ, Changchun 130026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, J,Fang, Y,Yang, LQ,et al. Numerical modelling of ore-forming dynamics of fractal dispersive fluid systems[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2001,75(2):220-232. |
| APA | Deng, J.,Fang, Y.,Yang, LQ.,Yang, JC.,Sun, ZS.,...&Wang, QF.(2001).Numerical modelling of ore-forming dynamics of fractal dispersive fluid systems.ACTA GEOLOGICA SINICA-ENGLISH EDITION,75(2),220-232. |
| MLA | Deng, J,et al."Numerical modelling of ore-forming dynamics of fractal dispersive fluid systems".ACTA GEOLOGICA SINICA-ENGLISH EDITION 75.2(2001):220-232. |
入库方式： OAI收割
来源：地质与地球物理研究所
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