| 大洋富钴结壳研究现状与进展 |
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| 引用本文： | 武光海,周怀阳,陈汉林.大洋富钴结壳研究现状与进展[J].高校地质学报,2001,7(4):379-389. |
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| 作者姓名： | 武光海 周怀阳 陈汉林 |
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| 作者单位： | 1. 浙江大学地球科学系，浙江 杭州 310027; 2. 国家海洋局第二海洋研究所，浙江 杭州 310012; 3. 国家海洋局 海底科学重点实验室，浙江 杭州 310012 |
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| 摘 要： | 在研究富钴结壳的地质构造背景时，发现富钴结壳的形成与板内地幔柱活动胡关，并与基岩类型和基岩的风化程度有关。由于现代分析测试技术的进步，对富钴结壳的结构造，矿物组成和地球化学特征的研究正在逐渐深入，特别是各种微区观察测试技术和同位素年代学方法的应用，使富钴结壳的高分辨率部面研究取得长足的发展。以此为基础，生长速率缓慢，在无沉积物时期生长的富钴结壳近年来被尝试用于古海洋学和全球变化的研究，它不但能反映千万年级的环境变化，而且能弥补深海沉积物所不能反映的沉积间断的历史，因此正成为该领域研究中的一个热点。在富钴结壳的成矿物质来源方面，逐渐认识到包括火山，热液和低温水岩反应等在内的内源物质供应的重要性。在结壳的成因机制研究方面发现微生物在结壳的形成过程中起到了主要作用。
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| 关 键 词： | 富钴结壳 发展方向 成矿物质 海洋矿产资源 同位素年代学 成因机制 |
| 文章编号： | 1006-7493(2001)04-379-11 |
| 收稿时间： | 2001-12-20 |
| 修稿时间： | 2001年4月16日 |
Progress in the Research of Cobalt-Rich Crusts |
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| WU Guang hai ,ZHOU Huai yang ,YANG Shu feng ,CHEN Han lin.Progress in the Research of Cobalt-Rich Crusts[J].Geological Journal of China Universities,2001,7(4):379-389. |
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| Authors: | WU Guang hai ZHOU Huai yang YANG Shu feng CHEN Han lin |
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| Institution: | 1. Department Earth Sciences, Zhejiang University, Hangzhou 310027; 2. Second Institute of Oceanography, State Oceanographic Bureau, Hangzhou 310012; 3. Key laboratory of Submarine Geosciences, State Oceanographic Bureau, Hangzhou 310012 |
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| Abstract: | Cobalt rich crust is one of the most potentially valuable mineral resources. This article introduces the details in progress of the Co rich crust research achieved in recent years. From the viewpoint of resources, the exploration region of Co rich crust is enlarged significantly in recent years. Meanwhile, the Co rich crust embedded below the sediments on seamounts is also found. Based on the geological and tectonic setting's research, the genesis of Co rich crust is interpreted to be related with the action of intense intraplate mantle plume. The thickness of the Co rich crusts is also related with the types of basement rocks and with the weathering degree of the basement rocks. Due to the progress of modern analysis techniques, the research on the Co rich crusts structures, mineral compositions and geochemistry has been deepened gradually. Especially on account of the microcosmic observation and test techniques and some new chronological methods, the research on resolution sections of the Co rich crust has made great progress. Based on this, Co rich crusts with lower growth rate and during the stage with no or few sediments are used to study the paleooceanographical features and the global changes. Ten million years' scale changes of oceanic environment and the history of deposit gap can be reflected by studying the Co rich crusts, which is impossible for the pelagic sediments. In the aspect of material source for the Co rich crusts, the importance of the endogeneic materials from volcanoes, hydrothermal fluids, and low temperature water basalt interactions etc, is gradually recognized. It is found that microbes play an important role in the formation of Co rich crusts. Finally, the directions of future development in this aspect are forecasted in this paper. |
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| Keywords: | cobalt rich crusts recent progress future development |
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