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author:

张文慧 (张文慧.) [1] | 王翠芝 (王翠芝.) [2] | 李晓敏 (李晓敏.) [3] | 刘文元 (刘文元.) [4]

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PKU CSCD

Abstract:

测定了闽西南地区5件基性岩脉的全岩主微量元素,锆石U-Pb年龄和Hf,O同位素。5件岩脉主要为辉绿岩,其全岩SiO_2含量为45%~53%,稀土元素显示轻稀土富集的右倾配分模式。基性岩脉中大部分锆石具明显振荡环带和扇状环带,为典型岩浆结晶锆石特征。锆石U-Pb年龄(96~2 400 Ma)分布较为分散。除少量锆石年龄(96~142 Ma)可能指示岩脉形成年龄外,其余均为捕获锆石。捕获锆石年龄主要分布在4个范围:早元古代(2 467~1 796 Ma),中晚元古代—震旦纪(1 343~647 Ma),志留纪—晚三叠世(427~225 Ma),晚侏罗世(159~140 Ma)。Hf-O同位素显示早...

Keyword:

Hf-O同位素 SIMS锆石U-Pb测年 基性岩脉 闽西南

Community:

  • [ 1 ] 福州大学紫金矿业学院

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Source :

地球科学进展

Year: 2016

Issue: 03

Volume: 31

Page: 320-334

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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