| 含金石英脉的展布规律及其形成机制——涡旋作用 |
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| 引用本文： | 陆德复.含金石英脉的展布规律及其形成机制——涡旋作用[J].地质与资源,1996,5(3):161-170. |
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| 作者姓名： | 陆德复 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 对国内外5个石英脉型金矿床的研究表明,矿田中的含金石英脉往往成群出现,并呈弧形帚状分布,帚状脉群的收敛端方向一致地显示为逆时针旋转方向。这一规律可能与科里奥利力产生的涡旋作用有关。
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| 关 键 词： | 金矿床 帚状脉群 科里奥利力 涡旋作用 |
| 收稿时间： | 1995-12-25 |
DISTRIBUTION OF GOLD-BEARING QUARTZ VEINS AND A VORTEX METALLIZATION |
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| Lu Defu.DISTRIBUTION OF GOLD-BEARING QUARTZ VEINS AND A VORTEX METALLIZATION[J].Geology and Resources,1996,5(3):161-170. |
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| Authors: | Lu Defu |
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| Institution: | Institute of Geology, Chinese Academia of Sciences |
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| Abstract: | Quartz vein-type gold deposits are one of important types of gold deposits. Studying the distribution of gold-bearing quartz veins in such deposits has not only important practi cal significance for their prospection and exploration but also important theoretical significance for approaching their origin. A certain regulation has been found in examining many gold deposits of this type at home and abroad: gold-bearing quartz veins usually occur in groups and extend in the form of arc; they are converged in one direction but diverged in another direction,totally appearing as spiral arms. In order to show this regulation five were exemplified in this paper: the Linglong gold leposit and the Qixia gold deposit in Shandong province and the Hatu gold deposit in Xinjiang Autonomous Region,China,the Hishikari gold deposit, Japan, and the Baguid gold deposit, Philippines. To a certain extent, these deposits represent broader sections of gold deposits or even other endogenic metal deposits because they are different in geological background, metallogenetic epochs and host rocks. It is worth noting that the convergence direction of arcuate gold -bearing quartz veins in them all is anticlockwise in respect to their divergence.In these example the direction pointed to the convergence end would be the direction of flow and gathering of hydrothermal ore-forming solution. It can thus be deduced that there is a horizontal rotation component in the rising of the hydrothermal ore-forming solution, that is, the rising is a rotational one. Maybe the metallization is related to the vortex of hydrothermal fluid. Such a vortex is much similar to eddy flows in oceans and cyclones in the at mosphere. These eddy flows and cyclones have been considered to be due to the Coriolis force caused by the rotation of the earth; the Coriolis is an inertial force in the rotational system, occurring only when a body moves in another rotating body as its reference system. Also, these eddy flows and cyclones show a certain regulation:anticlockwise from the outside to the center north of the equator and clockwise from the outside to the center south of it. All the five gold deposit given are located north of the equator, showing an anticlockwise rotation, like those eddy flows and cyclones north of the equator. This regulation of rotation provides a new train of thought for researching hydrothermal metallization. |
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| Keywords: | gold deposit brush vein group Coriolis force vortex metallization |
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