皖南绩溪伏岭岩体岩石地球化学特征  

Petrology and geochemistry of the Fuling mass in Jixi, southern Anhui

作　　者：张虹[1] 戴圣潜[2] 管运财[2] 吴海权[2] 

机构地区：[1]吉林大学地球科学学院,吉林长春130026 [2]安徽省地质调查院,安徽合肥230001

出　　处：《中国地质》2005年第3期411-416,共6页Geology in China

基　　金：中国地质调查局地质大调查项目(200113000010)资助。

摘　　要：通过详细的野外填图和地球化学研究,发现皖南伏岭岩体具有高硅、富铝、富碱,富集高场强元素,富集REE,高Rb、低Sr、Ba的特点,属于铝质A型花岗岩。地球化学特点表明岩浆由下地壳部分熔融产生;岩体是在造山后伸展构造环境中沿断裂快速上升定位、分异作用不完全状态下形成。Detiled field geological mapping and geochemical study show that the Fuling rock mass in southern Anhui is enriched in Si ,Al,alk , high-field strength elements ,REE ,Rb and depleted in Sr and Ba,belonging to aluminous A-type granites. These characteristics suggest that the magma originated by partial melting of the lower crust. The rock mass rose and was emplaced rapidly along fault in a post-orogenic extensional environment,and the magrnatic differentiation was incomplete.

关 键 词：地球化学 A型花岗岩 花岗岩成因 伏岭岩体 

分 类 号：P588.12[天文地球—岩石学]