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小秦岭碳酸岩的Sr-Nd-Pb同位素地球化学
王林均; 许成; 吴敏; 宋文磊; 唐红峰
2012
Source Publication矿物学报
Issue3Pages:370-378
Other Abstract小秦岭碳酸岩位于华北板块南缘,其(87Sr/86Sr)i与εNd值分别介于0.70495~0.70552和-10.1~4.6之间,紧靠EM1地幔端元,但相对EM1具有低Sr和低Nd特征。Pb同位素与华北板块南缘完全不同,而是落在了南秦岭下地壳范围之内,这表明华北板块南缘下地壳或地幔已经受到南秦岭地壳物质俯冲置换的影响,即在晚三叠纪时期,秦岭地区的碰撞造山作用可能已经结束,转入伸展拉张的构造环境。并进一步论述了秦岭地区三叠纪花岗岩是在深部拉张的构造环境下形成以及具有幔源物质参与的特征。
Keyword碳酸岩 同位素地球化学 花岗岩 构造背景 小秦岭
Subject Area地球深部物质与流体作用地球化学
Indexed ByCSCD
Language中文
CSCD IDCSCD:4606262
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Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/6790
Collection地球内部物质高温高压实验室_地球内部物质高温高压实验室_期刊论文
Recommended Citation
GB/T 7714
王林均,许成,吴敏,等. 小秦岭碳酸岩的Sr-Nd-Pb同位素地球化学[J]. 矿物学报,2012(3):370-378.
APA 王林均,许成,吴敏,宋文磊,&唐红峰.(2012).小秦岭碳酸岩的Sr-Nd-Pb同位素地球化学.矿物学报(3),370-378.
MLA 王林均,et al."小秦岭碳酸岩的Sr-Nd-Pb同位素地球化学".矿物学报 .3(2012):370-378.
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