| 潮控与河控下三角洲平原成煤的岩石学和地球化学特征 |
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| 引用本文： | 艾天杰,代世峰,周强,马凤学,李宝春. 潮控与河控下三角洲平原成煤的岩石学和地球化学特征[J]. 内蒙古地质, 2001, 0(1) |
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| 作者姓名： | 艾天杰 代世峰 周强 马凤学 李宝春 |
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| 作者单位： | 中国矿业大学北京校区!北京，100083，中国矿业大学北京校区!北京，100083，中国矿业大学北京校区!北京，100083，内蒙古乌达矿务局!乌海市，016040，内蒙古乌达矿务局!乌海市，016040 |
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| 摘 要： | 从显微煤岩组成特征、不同显微组分中有机硫的含量、伴生元素组成、硫同位素的分布特征等方面对内蒙古乌达矿区潮控下三角洲平原形成的高硫煤 9煤层和河控下三角洲平原形成的低硫煤 13煤层进行了研究。结果表明 ,潮控下三角洲平原形成的煤层较之河控下三角洲平原形成的煤层具有较高的镜质组含量 ;伴生元素中 Na、K、V、Mg等含量偏高 ,而稀土元素含量较低 ,稀土元素的含量与煤中的粘土矿物含量成正比 ;黄铁矿和有机硫同位素都比较轻 ,表明高硫煤中硫的来源主要是海水中细菌还原的硫酸盐。
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| 关 键 词： | 潮控下三角洲平原 河控下三角洲平原 煤岩组成 伴生元素 硫同位素 |
Characteristics of Petrology andGeochemistry of Coal Seams Formed onTidal and River Lower Delta Plain |
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| AI Tianjie,DAI Shifeng,ZHOU Qiang,MA Fengxue,LI Baochun. Characteristics of Petrology andGeochemistry of Coal Seams Formed onTidal and River Lower Delta Plain[J]. Geology of Inner Mongolia, 2001, 0(1) |
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| Authors: | AI Tianjie DAI Shifeng ZHOU Qiang MA Fengxue LI Baochun |
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| Affiliation: | AI Tianjie1,DAI Shifeng1,ZHOU Qiang1,MA Fengxue2,LI Baochun2 |
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| Abstract: | In this paper,the authors studied the composition characteristics of petrology, organic sulfur content in individual macerals, associated element composition, and the characteristics of sulfur isotopes in high-sulfur coal seam(No.9 coal seam)formed on tidal lower delta plain and in low-sulfur coal seam(No.13 coal seam)formed on river lower delta plain. The results showed that there is a higher vitrinite content,element contents of Na,K,V and Mg and a lower associated element content,and lighter isotopes of organic and pyritic sulfur in coal seam formed on tidal lower delta plain than that formed on river lower delta plain. The lighter sulfur isotope indicates that the main sulfur source in high-sulfur coal is from sulfate reduced by bacteria in seawater. |
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| Keywords: | tidal lower delta plain river lower delta plain petrological composition associated element sulfur isotope |
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