| 中国西南龙潭早期碱性火山灰蚀变的TONSTEINS |
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| 引用本文： | 周义平.中国西南龙潭早期碱性火山灰蚀变的TONSTEINS[J].煤田地质与勘探,1999,27(4):5-9. |
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| 作者姓名： | 周义平 |
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| 作者单位： | 昆明煤炭科学研究所 650041 |
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| 摘 要： | 系统地研究了中国西南地区晚二叠世龙潭早期TONSTEINS的时空分布。对该地区8层TONSTEINS的岩石学、矿物学以及地球化学特征的对比、分析,确认其全部为不同期次的同沉积碱性火山灰蚀变粘土岩。此一发现填补了全球含煤建造中缺失碱性火山灰沉积记录的空白,具有一定的实用价值与理论意义。
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| 关 键 词： | 碱性岩 火山灰 TONSTEIN 含煤建造 晚二叠世 中国西南 |
| 收稿时间： | 1998-08-11 |
| 修稿时间： | 1998-08-11 |
THE SYNSEDIMENTARY ALKALINITY-VOLCANIC ASH DERIVED TONSTEINS OF EARLY LONGTAN AGE IN SOUTH-WESTERN CHINA |
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| Zhou Yiping.THE SYNSEDIMENTARY ALKALINITY-VOLCANIC ASH DERIVED TONSTEINS OF EARLY LONGTAN AGE IN SOUTH-WESTERN CHINA[J].Coal Geology & Exploration,1999,27(4):5-9. |
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| Authors: | Zhou Yiping |
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| Institution: | Kunming Institute of Coal Science |
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| Abstract: | The stratigraphic and geographic distribution of early tonsteins in later Permian of southwestern China has been systematically studied in this report.By means of contrast and research the eight seams' tonsteins characteristics of the petrography,mineralogy and geochemistry,it can be confirmed that all the tonsteins are the alkalinityvolcanic ash derived tonsteins from different age.This finding has filled the recording gap of alkalinityvolcanie ash sediment in the coal formation of the world.Besides,it has a important application value and theoretical significance. |
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| Keywords: | TONSTEIN |
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