宁芜地区三个辉长岩的全岩和矿物Rb－Sr等时线年龄  

WHOLE-ROCK AND MINERAL Rb-Sr ISOCHRON AGES OF THE THREE GABBROS IN NANJINGWUHU AREA, CHINA

作　　者：徐祥[1] 邢凤鸣 

机构地区：[1]安徽省地质科学研究所

出　　处：《地质科学》1994年第3期309-312,共4页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：国家科技攻关项目

摘　　要：宁芜地区三个辉长岩的全岩和矿物Ｒｂ－Ｓｒ等时线年龄徐祥，邢凤鸣（安徽省地质科学研究所合肥２３０００１）关键词辉长岩，Ｒｂ－Ｓｒ，等时线，宁芜地区从南京到芜湖有许多辉长岩体分布，如南京蒋庙岩体、高古山岩体、大栏杆岩体，马鞍山阳湖塘岩体，当涂姑山岩体和芜...There are many gabbros in Nanjing-Wuhu area, but the isotopic ages of the gabbros were not dated exactly.It is not cleared that the relationship between coexisting iron-forming augite-diorite and gabbros.The authors used the method of whole-rock-mineral (apatite and biotite) Rb-Sr isochron and obtained the age of the gabbros from Jiangmiao in Naming is 125Ma, Isr= 0.7050,εNd(t)=+ 1.4; Yanghutang in Ma'anshan is 125Ma, Isr = 0.7054, εNd(t) = + 1.3; and Gushan in Dangtu is 129Ma, Isr = 0.7064 respectively.

关 键 词：辉长岩 矿物 铷 锶 等时线年龄 

分 类 号：P588.124[天文地球—岩石学]