| 冀东高板河中元古代硫铁矿叠层石结构特征及其成因 |
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| 引用本文： | 冯军,李江海,牛向龙,郑金武,任昊佳.冀东高板河中元古代硫铁矿叠层石结构特征及其成因[J].高校地质学报,2004,10(4):562-568. |
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| 作者姓名： | 冯军 李江海 牛向龙 郑金武 任昊佳 |
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| 作者单位： | 北京大学,地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家自然科学基金项目 (4 0 2 4 2 0 14，4 9832 0 30 )，北京大学 985项目资助 |
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| 摘 要： | 冀东高板河中元古代多金属硫化物矿床呈层状和透镜状与容矿岩石整合产出，其中发育大量各种类型的硫铁矿叠层石，呈中、小型丘堆状分布在多金属硫化物矿床中。通过对其进行形态学及显微结构研究和激光拉曼光谱测试表明，高板河硫铁矿叠层石的形成环境明显不同于普通藻叠层石的生长环境，形成于局部强封闭还原的半深海环境中，远离透光带，是海底黑烟囱周围嗜热微生物周期性生长形成的原生微生物沉积构造。硫铁矿叠层石的形态与其所处的环境以及微生物的种类有关。嗜热微生物对于黄铁矿矿床的形成具有重要的促进作用。
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| 关 键 词： | 硫化物 硫铁矿叠层石 生物组构 成矿作用 中元古代 |
| 文章编号： | 1006-7493(2004)04-562-07 |
| 修稿时间： | 2003年12月19 |
The Fabric Characteristics and Origin of the Mesoproterozoic Pyritic Stromatolite from the Gaobanhe Deposits,East Hebei Province |
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| FENG Jun,LI Jiang-hai,NIU Xiang-long,ZHENG Jin-wu,REN Hao-jia.The Fabric Characteristics and Origin of the Mesoproterozoic Pyritic Stromatolite from the Gaobanhe Deposits,East Hebei Province[J].Geological Journal of China Universities,2004,10(4):562-568. |
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| Authors: | FENG Jun LI Jiang-hai NIU Xiang-long ZHENG Jin-wu REN Hao-jia |
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| Abstract: | The Gaobanhe Mesoproterozoic polymetallic sulfide deposits in East Hebei were deposited conformably on Mesoproterozoic dolostone and black shales. Many types of pyritic stromatolites are distributed in polymetallic sulfide deposits in the form of bioherm. Pyritic stromatolites were studied by analyzing the ultrastructural morphologic characteristics and Laser Raman Specteoscopy. It is found that primary biogenic structure is preserved with pyritic stromatolites. They existed in a littoral environment. Thermophiles were flourishing in a reduced environment, which is quite close to the vents of hot water on seabed. They absorbed and enriched minerogenetic elements, reduced mineral materials from the vents, readjusted them biochemically and eventually formed pyritic stromatolites. |
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| Keywords: | sulfide pyritic stromatolite biological fabric mineralization Mesoproterozoic |
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