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| Geothermal and fluid flowing simulation of ore-forming antimony deposits in Xikuangshan | |
| 基金项目： | 国家研究发展基金;中国科学院资助项目 |
| 摘 要： | 1 Introduction The Mid-Hunan Basin is located in the south mar- gin of the Ancient Island Arc of Dong’an-Xuefeng and the north part of the interarc basin of Hercynian- Indosinian in Hunan-Guangxi. The basement rock of the basin, which is mainly distributed along the mar- ginal area of the basin and some interior sub-uplifts, is composed of pre-Devonian epimetamorphic-clastic rocks in great thickness, and the cap rock of the basin are dominated by carbonate rock and clastic rocks of Paleo… |
| 收稿时间： | 27 May 2005 |
| 修稿时间： | 12 January 2006 |
Geothermal and fluid flowing simulation of ore-forming antimony deposits in Xikuangshan |
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| Authors: | YANG Ruiyan MA Dongsheng BAO Zhengyu PAN Jiayong CAO Shuanglin XIA Fei |
| Institution: | 1. School of Mathematics and Physics, China University of Geosciences, Wuhan 430074, China;State Key Laboratory for Research of Mineral Deposits, Nanjing University, Nanjing 210093, China 2. State Key Laboratory for Research of Mineral Deposits, Nanjing University, Nanjing 210093, China 3. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China |
| Abstract: | The Xikuangshan Antimony Deposit located in the Mid-Hunan Basin, China, is the largest antimony deposit in the world. Based on the hydrogeological and geochemical data collected from four sections, Xikuangshan-Dajienao (AO), Xikuangshan-Dashengshan (BO), Xikuangshan-Longshan (CO) and Dafengshan (DO) in the Basin, an advanced metallogenic model related to deep-cyclic meteoric water of Xikuangshan Antimony Deposit is put forward in this paper using a model of heat-gravity-driving fluid flow transportation. The simulation results show that the ore-forming fluid of the deposit mainly comes from the Dashengshan and Longshan areas where BO and CO sections are located if the overall basin keeps a constant atmospheric precipitation and infiltration rate during mineralization, and that the average transportation speed of the ore-forming fluids is about 0.2–0.4 m/a. |
| Keywords: | ore-forming fluid numerical simulation geothermal field geofluid transport Xikuangshan antimony deposits |
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