| 内蒙古满洲里地区银铅锌矿赋矿地层特征及其时代探讨 |
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| 引用本文： | 舒广龙,刘继顺 马 光.内蒙古满洲里地区银铅锌矿赋矿地层特征及其时代探讨[J].中国地质,2003,30(3):297-301. |
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| 作者姓名： | 舒广龙 刘继顺 马 光 |
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| 作者单位： | 1. 中南大学地质研究所,湖南,长沙,410083;桂林工学院资源与环境工程系,广西,桂林,541004
2. 中南大学地质研究所,湖南,长沙,410083 |
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| 基金项目： | 国家科技攻关重点科研项目(85-901)资助. |
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| 摘 要： | 满洲里地区为一重要的有色金属、贵金属成矿区。区域地层主要为中生代陆相火山—沉积建造。区内甲乌拉、查干布拉根和额仁陶勒盖3个大型银(铅锌)矿床均赋存在中生界的底部地层中。以往对其时代归属存有争议。笔者对区内3大银(铅锌)矿区和巴颜浩雷银多金属矿化区的赋矿地层及对本区地层划分起重要作用的坎子井实测剖面地层特征进一步研究表明，区内银(铅锌)矿的赋矿地层在岩石组合和地层层序、地球化学等方面与上部晚侏罗—早白垩世地层有比较显著的差别。赋矿地层中发现的古生物化石与本区新的地质研究成果表明，区内银(铅锌)矿赋矿地层的时代应为晚三叠世—早侏罗世。
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| 关 键 词： | 内蒙古 满洲里地区 银铅锌矿 赋矿地层 地层特征 晚三叠世-早株罗世 |
| 文章编号： | 1000-3567(2003)03-05-0297-05 |
Characteristics of the host strata of Ag-Pb-Zn deposits in Manzhouli, Inner Mongolia and a discussion of their age |
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| SHU Guang-long,LIU Ji-sun,MA Guang.Characteristics of the host strata of Ag-Pb-Zn deposits in Manzhouli, Inner Mongolia and a discussion of their age[J].Chinese Geology,2003,30(3):297-301. |
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| Authors: | SHU Guang-long LIU Ji-sun MA Guang |
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| Institution: | SHU Guang-long1,2,LIU Ji-sun1,MA Guang1 |
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| Abstract: | The Manzhouli area is an important metallogenic province of nonferrous and noble metals.The regional strata consist mainly of Mesozoic continental volcano-sedimentary formations.The Jiawula,Chaganbulagen and Eren Tolgoi Ag-(Pb-Zn)deposits all occur on the bottom of the strata.Previously there were disputes on the age of the host strata.The authors have further studied the characteristics of the host strata in the three Ag-(Pb-Zn)districts and in the Bayan Haolei Ag-polymetallic mineralization district and the strata of the Kanzijing section which plays a very important role in the stratigraphic division in the area.The results of the study indicate that the strata hosting the Ag-(Pb-Zn)deposits in the area are notably differerent from their overlying Late Jurassic Early Cretaceous strata in respect of the rock association,stratigraphic sequence and geochemistry.The fossils discovered in the host strata and new geological research results in the area suggest that the age of the strata hosting the Ag-(Pb-Zn)deposits in the area is Late Triassic-Early Jurassic. |
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| Keywords: | Ag-Pb-Zn deposit host strata Late Jurassic-Early Cretaceous Manzhouli |
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