| 桐木沟热水沉积铅锌矿床同位素地球化学特征 |
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| 引用本文： | 马国良.桐木沟热水沉积铅锌矿床同位素地球化学特征[J].地球科学与环境学报,1993(4). |
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| 作者姓名： | 马国良 |
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| 作者单位： | 西安地质学院地勘系 710054 |
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| 摘 要： | 本文探讨了东秦岭桐木沟热水沉积铅锌矿床中碳、氧、硫、锶和铅等同位素的地球化学特征。结果表明:碳、氧和硫分别源于海相碳酸盐和海水硫酸盐;铅和锶源于基底地层。
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| 关 键 词： | 东秦岭 热水沉积 铅锌矿床 同位素 |
ISOTOPIC GEOCHEMICAL CHARACTERISTICS OF TONGMUGOU HOT WATER SEDIMENTARY Pb-Zn DEPOSIT IN EAST QINLING |
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| Ma Guoliang.ISOTOPIC GEOCHEMICAL CHARACTERISTICS OF TONGMUGOU HOT WATER SEDIMENTARY Pb-Zn DEPOSIT IN EAST QINLING[J].Journal of Earth Sciences and Environment,1993(4). |
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| Authors: | Ma Guoliang |
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| Institution: | Xi'an College of Geology |
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| Abstract: | Tongmugou Pb-Zn deposit in east Qinling is a typical "SEDEX"ore deposit. Its ore bodies are concordant bedded, and restricted within the middle Devonian strata. The characteristics of the isotopic geochemistry of carbon , oxygen and sulfur suggested that the carbon and sulfur are from the marine carbonate and sea water sulfates respectively. And the lead and strontium isotopic composition exhibit the characteris tics of a mixed source, which include basement rocks and sedimentary column underlying the ore bodies.
Therefore , it is deduced that ore-forming metal element were leached from basement rocks and sedimentary column by the sea water during its convection. When the ore-bearing hot water exhaled on the sea floor, ore bodies of sulfides were formed by sedimentation. |
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| Keywords: | East Qin linng Hot water sedimentation Lead-Zinc deposit Isotopic geochemistry |
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