| 分离的大陆板块边缘镁铁－超镁铁岩系Th／Hf—Ta／Hf判别 |
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| 引用本文： | 张成江,程长莹,汪云亮.分离的大陆板块边缘镁铁－超镁铁岩系Th／Hf—Ta／Hf判别[J].物探化探计算技术,1996(Z1). |
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| 作者姓名： | 张成江 程长莹 汪云亮 |
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| 作者单位： | 成都理工学院 |
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| 基金项目： | 攀登计划专题（攀登30－09B）资助 |
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| 摘 要： | 本文在论述了Ｔｈ／Ｈｆ－Ｔａ／Ｈｆ关系判别岩浆岩源区大地构造环境机理的基础上，根据世界上典型大地构造环境区岩浆岩系的Ｔｈ、Ｔａ、Ｈｆ特征，提出了分离的大陆板块边缘镁铁－超镁铁岩的Ｔｈ／Ｈｆ—Ｔａ／Ｈｆ判别标志：Ｔｈ／Ｔａ＝１．８～４．０，Ｔａ／Ｈｆ＞０．１。
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| 关 键 词： | 分离的大陆板块边缘，镁铁－超镁铁岩，判别标志 |
Th/Hf-Ta/Hf IDENTIFICATION OFMAFIC AND ULTRAMAFIC ROCKSERIES IN THEMARGIN OF SEPARATED CONTINENTAL PLATE |
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| Zhang Chengjiang,Cheng Changying,Wang Yunliang.Th/Hf-Ta/Hf IDENTIFICATION OFMAFIC AND ULTRAMAFIC ROCKSERIES IN THEMARGIN OF SEPARATED CONTINENTAL PLATE[J].Computing Techniques For Geophysical and Geochemical Exploration,1996(Z1). |
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| Authors: | Zhang Chengjiang Cheng Changying Wang Yunliang |
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| Abstract: | This paper proposes the mechanism identifing tectonic setting of source region ofigneous rocks by Th/Hf and Ta/Hf ratins.Based on the characteristics of Th, Ta and Hf ofigneous rock series in typic tectonic setting,we propose the identification Index of mafic andultramafic roek series in the margin of separated continental plate by Th/Hf and Ta/Hf:Th /Ta=1.8-4.0,Ta/Hf>0.1. |
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| Keywords: | margin of separated continental plate mafic and ultramafic rock series identification index |
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