赣南不同类型花岗岩体的锆石形态群特征及其意义  

CHARACTERISTICS AND SIGNIFICANCE OF THE POPULATION TYPOLOGY OF ZIRCON FROM GRANITOIDS IN SOUTHERN JIANGXI PROVINCE

作　　者：范春方[1] 陈培荣[1] 

机构地区：[1]南京大学内生金属矿床成矿机制研究国家重点实验室

出　　处：《地质找矿论丛》2000年第4期299-306,共8页Contributions to Geology and Mineral Resources Research

基　　金：国家重点基础研究项目!(G19990 432 0 0 );国家自然科学基金项目!(4 9772 110 );核工业总公司地质局项目

摘　　要：根据赣南不同时期的各类型花岗岩体的锆石形态群的研究 ,确定了赣南在前燕山期形成的隘高岩体、安西—龙州岩体都是造山花岗岩 ,寨背岩体、陂头岩体、柯树北岩体和安西—龙州岩体均可能是地幔物质混染地壳物质后形成的。Using J.P.Pupin's method,this paper studies the population typology of zircon from 5 granitoids of different types.The features of zircon populations from Aigao granitoid are similar to Saint Sylvestre granites (French Central Massif) and Gueret granites (French Central Massif).These granites are thought to be of typically crustal extraction,having formed under low P T conditions.The characteristics of zircon populations from Anxi longzhou granites are different from Aigao granites.These granites are of Crustal+Mantle Origin(Hybrid Granites).In the fig.of distribution of mean points and mean T.E.T.of zircon populations,Zhaibei granites,Pitou granites and Keshubeidong granites mainly fall in the field of sub alkaline series granites.It is suggested that these granites are of mantle or mainly mantle origin.

关 键 词：锆石形各 A型花岗岩 S型花岗岩 Ⅰ型花岗岩 

分 类 号：P588.121[天文地球—岩石学] P578.941[天文地球—地质学]