| 鄂西台地东部陡山沱期微生物泥丘的聚磷控矿作用 |
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| 关键词:east region of western Hubei platform mud mounds biocenosis phosphate-rich |
| 基金项目:国家自然科学基金,地质行业基金 |
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| 摘要: |
| Control of Phosphate Accumulation in Microlial Mud-Mounds of the Doushantuo on Stage in East Part of the Western Hubei Platform |
| The Sinian Period of the Doushantuo an stage in the east region of Western Hubei Platform is an important place forming major phosphorite deposits in China. In the phosphate bearing horizons of the Doushantuo Formation, various kinds of mud mounds are vastly developed in this plotform, especially in its eastern portion. The mud mounds contain in phosphatic deposits and control the shape and grad of the phosphorite deposits. The present research indicates that the supersession of microbial communities restrained the adulteration of carbonates when the phosphates were deposited in sea water,while ancient ecological environments changed from benthic microbial communities in clean water to planctonic ones respectively in clim water and turbid weter. Tree types of phosphatic mud mounds (i.e.Types Ⅰ, Ⅱ and Ⅲ) were formed and they generated the main phosphorite deposits utilized by industry in this area. |
| CHEN Hui-neng,ZHU Shi-xing,GUAN Ai-lian.1998.Control of Phosphate Accumulation in Microlial Mud-Mounds of the Doushantuo on Stage in East Part of the Western Hubei Platform[J].Acta Geoscientica Sinica,19(3):261-270. |
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