山东国土资源2024，Vol.40Issue(3)：23-32,10.DOI:10.12128/j.issn.1672-6979.2024.03.003
鲁西郗山—关帝庙地区碱性杂岩体微量元素地球化学特征及其意义
Trace Element Geochemical Characteristics and Significance of Alkaline Complex in Xishan—Guandimiao Area in Western Shandong Province
摘要
Abstract
Based on detailed petrographic observations,characteristics of trace elements and rare earth ele-ments in rocks and minerals have been analyzed and studied.It is indicated that Xishan—Guandimiao alka-line complex is enriched in Ba,U,Pb,Th,La,Ce,while depleted in Nb,Ta,Zr and Hf.Nb＞Ta.It is enriched in light rare earth elements and depleted in heavy rare earth elements.The differentiation of light and heavy rare earth elements is significant,and there are no obvious abnormalities in Ce and Eu.The trace element distribution curves of Guandimiao and Xishan rocks are similar.It is indicated that the two rock masses are homologous magmas.It is speculated that the diagenetic material initially comes from the product of partial melting of lithospheric mantle,its parent magma is carbonate silicate rock melt.Mag-matic and hydrothermal apatite have been found in Xishan rock mass.It is indicated that the magma has experienced strong crystallization differentiation and a certain degree of mixing.A large amount of light rare earth minerals are formed during the hydrothermal stage.关键词
微量元素/岩浆结晶分异/岩浆—流体作用/郗山—关帝庙/鲁西Key words
Trace elements/magmatic crystallization differentiation/magma-fluid interaction/Xishan—Guandimiao/western Shandong province分类
天文与地球科学引用本文复制引用
王巧云,郝兴中,兰君,王立功,陈磊,郭晶,胡创业..鲁西郗山—关帝庙地区碱性杂岩体微量元素地球化学特征及其意义[J].山东国土资源,2024,40(3):23-32,10.基金项目
由山东省自然科学基金项目(ZR2020MD033)、山东省地质勘查项目([2021]18、[2023]2)联合资助 （ZR2020MD033）
