| 一种新的元素迁移形式及其地球化学环境效应 |
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| 引用本文： | 童纯菡,李巨初,葛良全.一种新的元素迁移形式及其地球化学环境效应[J].成都理工大学学报(自然科学版),2002,29(5):567-570. |
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| 作者姓名： | 童纯菡 李巨初 葛良全 |
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| 作者单位： | 成都理工大学应用核技术与自动化工程学院,成都,610059 |
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| 摘 要： | 提出了地壳中存在一种新的元素迁移现象 ,即由于地壳内存在的上升气流将非气态元素以纳米微粒形式垂直迁移至地表 ,迁移距离可达几百米 ,甚至几千米。通过室内模型实验证明 ,元素纳米微粒以上升气流垂向迁移形式为主 ,扩散迁移只占极小部分。列举了宣汉气田及成都平原隐伏断裂上汞污染的二个实例 ,初步讨论这种新的元素迁移现象对地表地球化学环境的影响。
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| 关 键 词： | 上升气流 纳米微粒 元素迁移 地球化学环境 |
| 文章编号： | 1005-9539(2002)05-0567-04 |
| 修稿时间： | 2001年7月10日 |
A NEW FORM OF ELEMENTAL MIGRATION AND ITS INFLUENCE ON GEOCHEMICAL ENVIRONMENTS |
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| TONG Chun-han,LI Ju-chu,GE Liang-quan.A NEW FORM OF ELEMENTAL MIGRATION AND ITS INFLUENCE ON GEOCHEMICAL ENVIRONMENTS[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2002,29(5):567-570. |
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| Authors: | TONG Chun-han LI Ju-chu GE Liang-quan |
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| Abstract: | This paper discusses a new form of elemental migration by ascending flows existing in the crust. The non-volatile elements can be transported vertically from the deep of hundreds to thousands miters to the surface in the form of nano-scale particles. The data of simulation tests demonstrate that the vertical transportation by ascending flows is the main case, and the diffusion transportation is a limited part in the form of the nano-scale particles. Based on the data of two examples, that is the gas anomaly in Xuanhan natural gas field and the Hg pollution on the earth surface above the concealed fault in Chengdu plateau, the influence of this new form of elemental migration on the geochemical environments is discussed. |
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| Keywords: | ascending flows nano-scale partcles elemental migration geochemical environment |
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