DOI:
矿床地质:1995,Vol.>>Issue(3):205-215

从闪长质岩石包体角度探讨太行山——燕山造山带壳幔成矿作用
中国地质大学
A preliminary discussion on the crust-mantle mineralization in the Taihang Mountains –Yanshan orogenic belt from the angle of dioritoid enclanves
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中文摘要:文中首次从闪长质岩石包体的角度讨论了上地幔、中、下地壳成分及岩浆演化过程对成矿作用的影响,指出太行山-燕山造山带中成矿作用及其区域成矿规律明显受到壳幔成矿体系的制约。
Abstract:Since 1980s, such factors of continental lithosphere as its composition, texture, formation and evolution have become the forefront research field in geosciences. Orogenic belts seem to be the key link in the study of continental lithosphere. Being an orogenic belt developed since Mesozoic, the Taihang Mountains-Yanshan orogenic belt is of great significance in studying the formation, development and evolution of the crust in eastern China or even east Asia. As the lithomicroprobe method is one of the simple and convenient methods in the study of deep geology, the authors have discussed for the first time the influence of the composition of the upper mantle and the middle-lower crust as well as the magmatic evolution upon the ore-forming process from the angle of dioritoid enclaves. Preliminary studies have demonstrated that the tentative idea that dioritoid enclaves can serve as the lithomicroprobe of lithosphere to reflect the crust-mantle mineralization in orogenic belts is fairly reasonable. Hence, the idea provides a method for the study of orogenic belts through the investigation into the crust-mantle evolution and mineralization. It is also pointed out that mineralization and metallogeny of orogenic belts are controlled not only by regional nonhomogeneity of the mantle, but obviously by the crust-mantle ore-forming system. The ratios of metallogenic elements in dioritoid enclaves to those in the upper mantle and to those in the middle-lower crust can reflect the metallogenic contribution of the upper mantle and that of the middle-lower crust respectively. In addition, the ratios of metallogenic elements in granite to those in dioritoid enclaves reflect the composite evolutionary results of granitic magma.
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引用文本:
刘凤山,石准立.1995.从闪长质岩石包体角度探讨太行山——燕山造山带壳幔成矿作用[J].矿床地质,14(3):205~215
.1995.A preliminary discussion on the crust-mantle mineralization in the Taihang Mountains –Yanshan orogenic belt from the angle of dioritoid enclanves[J].Mineral Deposits14(3):205~215
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