中国海洋大学学报（自然科学版）2011，Vol.41Issue(6)：97-103,7.
山东省栖霞牙山花岗闪长岩岩石地球化学特征及成因探讨
The Petrogeochemistry and Genesis of Granodiorite in Yashan Qixia, Shandong Province
摘要
Abstract
Qixia Yashan area is located at the east of the North China platform.The geochemical studies about the porphyritic granodiorites in this area shows that the rocks belong to calc-akaline and metalumious series.The MORB-normalized spider diagram of trace elements reveals enriching LILE of Ba and Sr,and lacking of HFSE of Nb, Ta, Hf and Y.The ratio of K/Rb is 295.34～388.88 and Rb/Sr is 0.21～0.29.The spider diagram of rare earth element, show relative smooth, weak negative abnormal of Eu and right steep patterns.∑ LREE/∑ HREE is 9.14～12.22.They all indical well differentiation between LREE and HREE.Through the analysis of strural factors the genesis of Yashan granodiorite is that sabduction of Pacific plate to Eurasian plate causes mantle plume activity, which produces mantdiapir and crust partial melting, then form crust-mantle magma, and the furture invasion form the granodiorite.关键词
栖霞/花岗闪长岩/岩石地球化学/成因Key words
Qixia/ granodiorite/ petrogeochemistry/ genesis分类
天文与地球科学引用本文复制引用
韩宗珠,张贺,田元,邓声贵,张凯棣,王淑杰,高芳..山东省栖霞牙山花岗闪长岩岩石地球化学特征及成因探讨[J].中国海洋大学学报（自然科学版）,2011,41(6):97-103,7.基金项目
国家自然科学基金项目(41072152) （41072152）
中国海洋大学OUC_SRTP项目(0912010510)资助 （0912010510）
