| 实验研究岩石圈深部流体及相关科学问题 |
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| 关键词:NaCl-H2O solution deep earth fluids critical state electric conductance high conductivity layer |
| 基金项目:国家科技部基础研究项目“大规模成矿作用”(G1999043212)”，“全国理化数据库”项目(2001DEA30041)，“极端条件下物质标准”项目(2001DEA20023)，国土资源部重点基础项目“重要金属矿来源迁移堆积过程和化学动力学”(9501115)，“地球化学动力学和成矿系统复杂性”（20010302和DK2001022）及自然科学基金项目（40043011） |
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| Experimental Investigations and Observations on Deep Earth Fluids and Related Scientific Problems |
| Experimental investigations and observations on deep earth fluids have found that fluids show lots of specific properties when they cross the critical state. The liquid vapor phase irrevisblility fields and near critical phenomena of NaCl solutions were detected by using HDAC (hydrothermal diamond anvil cell) connected to microscope over the temperature range from 300 to 700℃, and pressure from 2～8 kb. The measurement of electric conductance of NaCl solutions has also revealed that the electric conductances occur from near critical state to crossing the critical state. The observation of hydrothermal vents in the Middle Ocean ridge has found that gas vents are usually located at the depth of 2200 meter, and ore forming fluids erupted at the critical temperature from the vents. This research on the critical state of NaCl solution has an important significance in understanding the deep geophysical investigations and the fluids in the depth of the lithosphere. |
| ZHANG Rong-hua,HU Shu-min,WANG Jun,ZHANG Xue-tong.2004.Experimental Investigations and Observations on Deep Earth Fluids and Related Scientific Problems[J].Acta Geoscientica Sinica,25(1):17-24. |
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