| Evidence of Bio-Organic Mineralization |
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| 作者姓名： | Zhang Aiyun Weng Chengmin |
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| 作者单位： | Department of Enemy Resources Geology，China University of Geosciences，Beijing 100083 |
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| 摘 要： | ＥｖｉｄｅｎｃｅｏｆＢｉｏ－ＯｒｇａｎｉｃＭｉｎｅｒａｌｉｚａｔｉｏｎ￥ＺｈａｎｇＡｉｙｕｎ；ＷｅｎｇＣｈｅｎｇｍｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＥｎｅｍｙＲｅｓｏｕｒｃｅｓＧｅｏｌｏｇｙ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｃｉｅｎｃｅｓ，Ｂｅ...
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Evidence of Bio-Organic Mineralization |
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| Zhang Aiyun ,Weng Chengmin.Evidence of Bio-Organic Mineralization[J].Journal of China University of Geosciences,1994(1). |
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| Authors: | Zhang Aiyun Weng Chengmin |
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| Abstract: | The marine black shale formations of different epochs are widely seen in China. They usually come cul as ore-bearing horizon and contain different ore-forming element. Why are there so many different associated metallic elements in the marine black shale ? Evidence shows that the answer is bio-mineralization. The bio-mineralizahon in the process of formation of metalliferous black shales can be divided intp twp stages. The first stage is the bio-achvities occurring in the surface layer aquatic body of the ocean .The ore-forming elements could be absorbed by only a few species of organisms as a bioconcentrator. The second stage is the biogeochemical process. The anaerobic bacteria decomposed the organic remains and the metal elements were activated, and migrated and combined with organic matter or clay minerals or sulfide. After sediments were buried deeply, the organic matter were cracked by high earth temperature.The metal elements in organic compound were continuously acivated, and migrated to form matamorphic minerals or hydrothermal minerals in original rocks or quartz veins. The biogenetic marks in the black shale are changed or distorted beyond recognition and not easy to be found. |
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| Keywords: | Cambrian black shale vanadium tunicate bio-mineralization |
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