| 镁质碳酸盐岩建造区域变质及其非金属矿成矿系列 |
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| 引用本文：.1995.Regional metamorphism of magnesian carbonate formation of China and its nonmetallic minerogenic series[J].Mineral Deposits,14(1):89~98 |
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| 中文摘要:根据岩石组合和矿床组合的不同，我国镁质碳酸盐岩含矿建造可细分出四个亚建造。其中分别以七种组合形式，产出12种由区域变质成矿作用形成的非金属矿床，构成一个共生、伴生规律明显、重现性强、经济意义大的成矿系列。 |
| 中文关键词:非金属矿床 含矿建造成矿系列 区域变质成矿作用 |
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| Regional metamorphism of magnesian carbonate formation of China and its nonmetallic minerogenic series |
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| Abstract:Studies show that this minerogenic series has seven major characteristics: (1) the ore-bearing formation is closely related to the Precambrian magnesian carbonate rock and might be further divided into four subformations according to the differences in rock association and nonmetallic deposit association; (2) the minerogenic series includes twelve sorts of mineral deposits, such as dolomite, magnesite, talc, fibrous sepiolite, brucite, diopside, tremolite, serpentine, chlorite, phlogopite and ascbarite, and due to the difference in the ore-forming microenvironment, the minerogenic series finds expression in seven types of mineral deposit associations; (3) the degree of metamorphism of the ore-bearing formation is assigned to greenstchist facies and amphibolite facies, to which the minerogenic series is confined; (4) the minerogenic epoch shows polyphase and multi-stage cbaracter; (5) the ore-forming materials are characterized by multiple sources, with the magnesian carbonate rock being the most important source; repeated hydrothermal activities were superimposed upon the ore deposits formed by regional metamorphism; as shown by stable isotope studies, the hydrothermal solutions might be metamorphic, magmatic and groundwater hydrothermal solutions or their mixed solutions; (6) regional metamorphism and hydrothermal replacement constitute the main ore-forming processes, and the dynamic force that caused regional metamorphism resulted from the convergence and subduction of plates; (7) the minerogenic series is distributed in the metamorphic terranes near the suture such as eastern Liaoning, eastern Shandong, Qilian-Qinling Mountains and northern Guangxi. Finally, the evolution of the ore-forming process is discussed. |
| keywords:nonmetallic deposit, ore-bearing formation, minerogenic series, mineralization |
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