Oxygen isotope evidence for two - stage water - rock interac - tions of the Nianzishan A-type granite in NE China

Wei Chunsheng; Zheng Yongfei; Zhao Zifu

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Oxygen isotope evidence for two - stage water - rock interac - tions of the Nianzishan A-type granite in NE China

机译：中国NE子山A型花岗岩两级水岩相互作用的氧同位素证据。

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The oxygen isotope ratios of whole - rock, com - mon rock - forming minerals and zircon from Mesozoic A- type granitic pluton at Nianzishan in northeastern China were analyzed by the conventional BrF_5 method and the la - ser - probe technique, respectively. Both whole - rock and rock - forming minerals show large δ18~O variations up to 5.5/1000 with significant oxygen isotope disequilibrium between zircon and the other minerals, whereas the δ18~O values of zircon are tightly clustered between 3.12/1000 and 4.19/1000 and thus lower than the normal - mantle δ18~O values.

机译：利用常规的BrF_5方法和la-ser-probe技术分别分析了东北泥子山中生代A型花岗岩体的全岩，常见成岩矿物和锆石的氧同位素比。全岩和成岩矿物均显示出高达5.5 / 1000的大δ18〜O变化，且锆石与其他矿物之间存在明显的氧同位素不平衡，而锆石的δ18〜O值则紧密地聚集在3.12 / 1000和4.19 /之间1000，因此低于正常-地幔的δ18〜O值。

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《Chinese science bulletin》 |2001年第9期|p.727-731|共5页
作者
Wei Chunsheng; Zheng Yongfei; Zhao Zifu;
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原文格式 PDF
正文语种 eng
中图分类自然科学现状及发展;
关键词
A-type granite; water-rock interaction; zircon;

机译：A型花岗岩;水岩相互作用;锆石;

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Oxygen isotope evidence for two - stage water - rock interac - tions of the Nianzishan A-type granite in NE China

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