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首页> 外文期刊>Journal of China University of Geosciences >Some Geochemical Characters of Kimberlites in Eastern North China Platform and Heterogeneity of Their Sources
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Some Geochemical Characters of Kimberlites in Eastern North China Platform and Heterogeneity of Their Sources

机译：华北东部台地金伯利岩的一些地球化学特征及其来源的非均质性

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摘要

Some geochemical characters of the kimberlites from different rock regions in North China platform are compared in this paper at first. The characters of the source regions are constrained then based on primary magmas compositions of typical regions chosen. The differences in metaso-matic fluid activity in the lithosphere are discussed moreover. The diamondiferious kimberlitic sources, such as Fuxian and Mongying, were located at the fluid metasomatic mantle lithosphere or the boundary between the lithosphere and the asthenosphere(200—230 km), and enrich in LREE, Ti and isotope Sr but deplete in isotope Nd. Tieling is located nearby Paleozoic mobile belt, strong activity in fluids and shallower depth of magma source (～150 km), highest in w(LREE) and w (P), lower in w(Ti). But the shallowest depth of magma source ( < 130 km) and weak activity in fluids are in Hebi and Shexian sources.
机译：本文首先比较了华北平台不同岩石区域的金伯利岩的一些地球化学特征。然后根据所选典型区域的初级岩浆成分来约束源区域的特征。此外，还讨论了岩石圈中交代流体活动的差异。富县和蒙营等金刚石岩源位于流体交代地幔岩石圈或岩石圈与软流圈之间的边界（200-230 km），富含LREE，Ti和同位素Sr，但富含同位素Nd。铁岭位于古生界移动带附近，流体活动性强，岩浆源深度较浅（约150 km），w（LREE）和w（P）最高，w（Ti）较低。但最深的岩浆源深度（<130 km）和流体活动性较弱是在鹤壁和and县。

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