| Chondritic osmium isotopic composition of late Archean convecting upper mantle：Evidence from Zunhua podiform chromitites,Hebei, North China |
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| 作者姓名： | XIA Qiongxia1 ZHI Xiachen1 LI Jianghai2 & HUANG Xiongnan2 1. School of Earth and Space Sciences University of Science and Tech- nology of China Hefei 230026 China 2. Department of Geology Peking University Beijing 100871 China Correspondence should be addressed to Zhi Xiachen |
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| 作者单位： | XIA Qiongxia1,ZHI Xiachen1,LI Jianghai2 & HUANG Xiongnan2 1. School of Earth and Space Sciences,University of Science and Tech- nology of China,Hefei 230026,China; 2. Department of Geology,Peking University,Beijing 100871,China Correspondence should be addressed to Zhi Xiachen |
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| 摘 要： | The Os isotopic composition and evolution of con-vecting upper mantle (CUM) are an important and diffi-cult scientific issue related to the distributions of PGEs inearth’s interior and the accretion history of the earth. De-termination of 187Os/188Os of modern CUM has been at-tempted via analyses of abyssal peridotites, mid-oceanridge basalts (MORB), MORB glasses and sulfides. Abyssal peridotites, which are mantle samples re-covered from the ocean ridges, represent the upperm…
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| 关 键 词： | 河北 锇 同位素 太古代 化合物 斜方辉橄岩 矿物分析 |
| 收稿时间： | 2004-06-10 |
| 修稿时间： | 2004-08-09 |
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