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从20世纪90年代初期开始,国内外学者开始探讨中国东部岩石圈从200km减薄至80~120km的机制、时限及过程。含金刚石及捕虏体的金伯利岩侵位于华北克拉通东部,提供了自古生代以来板内岩石圈地幔特征及其演化的深源岩石探针。本文综述前人对金伯利岩侵位年龄、同位素、流体包裹体、岩相学的研究,旨在提出金伯利岩在华北克拉通东部演化过程的研究意义,认为华北东部早古生代时含金刚石的金伯利岩侵位,表示当时存在冷、厚的克拉通岩石圈根,大陆克拉通的造陆运动是形成金伯利岩岩浆必要的大地构造背景。
Beginning in the early 1990s, domestic and foreign scholars began to explore the mechanism, time frame and process of lithospheric thinning from 200km to 80 ~ 120km in eastern China. The kimberlite intrusions, including diamond and xenoliths, are located in the eastern part of North China Craton and provide deep-source rock probes that characterize the lithospheric mantle and its evolution since Paleozoic. This paper reviews the previous studies on the age, isotopes, fluid inclusions and petrography of kimberlite in order to point out the significance of kimberlite in the evolution of the eastern North China Craton. It is concluded that the kimberlite The emplacement indicates that there were cold and thick cratonic lithospheric roots at that time. The continental craton’s land-building movement was necessary for forming kimberlite magma in the tectonic setting.