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鲁西沂水地区早前寒武纪混合岩锆石U-Pb年龄与Hf同位素组成及其构造意义
毛永生; 彭头平; 范蔚茗; 高剑峰; 方小玉; 刘兵兵
Source Publication地球化学
2015
Pages517-535
Abstract沂水地区位于鲁西花岗绿岩区东部沂水-汤头断裂带内。本文对区内九层岭与大山两地的混合岩样品进行了锆石U-Pb年龄与Hf同位素分析研究。结果显示九层岭混合岩有(2693±11)Ma和(2558±9)Ma两个年龄记录,分别代表早期熔融年龄和混合岩化年龄;锆石Hf同位素组成较为均一,ε_(Hf)(t)=+2.42~+5.46并且沿~(176)Lu/~(177)Hf=0.015平均地壳演化线分布,相应二阶段锆石Hf模式年龄都在2.80~2.93 Ga之间。而两个来自大山的样品则给出了(2475±14)Ma和(2474±14)Ma一致的结果,代表了混合岩化年龄;Hf同位素组成变化较大,ε_(Hf)(247...
Keyword锆石u-pb年龄 锆石hf同位素 古老基底 地壳增生 沂水
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7071
Collection图书馆
Recommended Citation
GB/T 7714
毛永生,彭头平,范蔚茗,等. 鲁西沂水地区早前寒武纪混合岩锆石U-Pb年龄与Hf同位素组成及其构造意义[J]. 地球化学,2015:517-535.
APA 毛永生,彭头平,范蔚茗,高剑峰,方小玉,&刘兵兵.(2015).鲁西沂水地区早前寒武纪混合岩锆石U-Pb年龄与Hf同位素组成及其构造意义.地球化学,517-535.
MLA 毛永生,et al."鲁西沂水地区早前寒武纪混合岩锆石U-Pb年龄与Hf同位素组成及其构造意义".地球化学 (2015):517-535.
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