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本文主要是对《岩石化学系列和元素演化周期性》的部分结论的验证。说明岩石化学系列的分析方法可用于探讨区域构造演化及岩浆岩分期。 相似文献
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Continental crust rocks can be grouped into three petrochemical, systems, i.e.,oxygen-poor, transitional, and oxygen-rich system, which are intimately related to the intensity of crustal movement. Stable areas in the crust are characterized by rocks of oxygen-poor system, while rocks of oxygen-rich system are typical of active regions.Rocks of the transitional system form all gradations between the two systems Parallel to the orogenic cycle in crustal movement an evolutionary cycle from low to high oxygen content can always be recognized with respect to rocks in each system. On the other hand, with regard to rocks of the same type in the same petrochemical system, apart from the influence of crustal movement intensity, a tendency of increasing oxygen content with decreasing orogenic age is noticeable. As a region changes from active into gradational geologically, oxygen content is found decreasing for rocks of the same type,or vice versa. In this context, new implications may be attached to studies on petrochemical system : (1) A“family tree” can be established for rocks, thus sheding light on their evolutionary hlstoryand geneses (2)To provide information on the intensity of crustal movement, i.e., the tectonic nature for the studied area at the time of magma generation, and (3) To aid in determining petrogenetie age of magmatic rocks and in making geological divisions. 相似文献
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