刘园园;马昌前;张超;佘振兵;张金阳;

• 1:中国地质大学研究生院
• 2:中国地质大学地球科学学院
• 3:中国地质大学地质过程与矿产资源国家重点实验室
• 4:中国地质大学资源学院

摘要(Abstract)：

对安徽月山岩体开展了锆石原位U-Pb测年及Lu-Hf同位素研究。锆石的LA-ICP-MS年代学研究表明,月山闪长岩的U-Pb年龄为(139.3±1.5)Ma,与长江中下游成矿带早白垩世成铜岩体的年龄一致。月山闪长岩中的锆石具有均一的Hf同位素初始比值,介于0.282 430~0.282 491间。这些锆石的ε(Hf)(t)介于-9.05~-6.90间,亏损地幔模式年龄介于1.06~1.17 Ga间。结合长江中下游地区岩浆岩其他地球化学特征,认为月山岩体可能是在俯冲体系下由幔源岩浆经结晶分异作用且局部伴有一定程度的同化混染作用所形成。

关键词(KeyWords)： 锆石;U-Pb定年;Hf同位素;月山岩体

Abstract:

Keywords:

基金项目(Foundation): 国家科学技术部国际科技合作项目(2007DFA21230);; 国家自然科学基金重点项目(40334037);; 国家自然科学基金委员会创新研究群体基金项目(40821061);; 教育部和国家外国专家局高等学校学科创新引智计划项目(B07039)

作者(Author): 刘园园;马昌前;张超;佘振兵;张金阳;

Email:

DOI:

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