| 甘肃北祁连山志留系沉积岩铜矿特征 |
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| 引用本文： | 李金春.甘肃北祁连山志留系沉积岩铜矿特征[J].甘肃地质学报,2000,9(2):19-27. |
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| 作者姓名： | 李金春 |
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| 作者单位： | 甘肃省地勘局地质调查队,甘肃酒泉 |
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| 摘 要： | 甘肃北祁连山志留系沉积岩铜矿产于红绿交替碎屑岩系中 ,矿体产在志留系旱峡组灰绿色砂岩层的底部 ,具有明显的层控特征。地球化学特征表明 ,旱峡组碎屑岩中铜富集系数及其相关的矿物组合含量明显高于其它正常沉积岩。矿体宏观及微观特征表明主要控矿因素是沉积环境、沉积作用。
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| 关 键 词： | 志留系 沉积岩铜矿 地球化学 甘肃 北祁连山 |
FEATURES OF SEDIMENTARY COPPER DEPOSITS OF SILURIAN SYSTEM IN NORTH QILIAN AREA,GANSU PROVINCE |
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| LI Jin,chun.FEATURES OF SEDIMENTARY COPPER DEPOSITS OF SILURIAN SYSTEM IN NORTH QILIAN AREA,GANSU PROVINCE[J].Acta Geologica Gansu,2000,9(2):19-27. |
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| Authors: | LI Jin chun |
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| Institution: | LI Jin chun (Jiuquan Geological Surveying Party,Gansu Provincial Burean of Geology and Mineral Exploration and Development,Jiuquan 735009,China) |
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| Abstract: | The sedimentary copper deposits in Silurian System in North Qilian area,Gansu Province,occur in red and green clastic rocks.Orebodies are in the bottom of gray green sandstone of Hanxia Formation of Silurian System.The orebodies are distinctly characterized with stratabounds.The geochemical features indicate that copper enrichment coefficient and relative mineral assemblage content in Hanxia Formation are higher than those in other sedimentary rocks.Macroscopic and microscopic features show that main ore controlling factors are sedimentary environment and sedimentation. |
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| Keywords: | Silurian System Sedimentary copper deposit Geochemistry North Qilian area Gansu Province |
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