Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle
文献类型：期刊论文
| 作者 | Zhang, HF; Ying, JF; Xu, P; Ma, YG |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2004-05-01 |
| 卷号 | 49期号:9页码:961-966 |
| 关键词 | North China craton Mesozoic basalt xenocrysts lithospheric mantle |
| ISSN号 | 1001-6538 |
| DOI | 10.1360/03wd0653 |
| 文献子类 | Article |
| 英文摘要 | Mesozoic (125 Mal Fangcheng basalts from Shandong Province contain clearly zoned olivines; that are rare in terrestrial samples and provide first evidence for the replacement of lithospheric mantle from high-Mg peridotites to low-Mg peridotites through peridotite-melt reaction. Zoned olivines have compositions in the core (Mg# = 87.2-90.7) similar to those olivines from the mantle peridotitic xenoliths entrained in Cenozoic basalts; from the North China craton and in the rim (Mg# = 76.8-83.9) close to olivine phenocrysts of the host basalts (75.7-79.0). These compositional features as well as rounded crystal shapes and smaller grain sizes (300-800 mum) demonstrate that these zoned olivines are mantle xenocrysts, i.e. disaggregates; of mantle peridotites. Their core compositions can represent those of olivines of mantle peridotites. The zoned texture of olivines was formed through rapid reaction between the olivine xenocryst and the host basalt. This olivine-basaltic melt reaction could have been ubiquitous in the Mesozoic lithospheric mantle beneath the North China craton, i.e. an important type of the replacement of lithospheric mantle. The reaction resulted in the transformation of the Palcozoic refractory (high-Mg) peridotites to the late Mesozoic fertile (low-Mg) and radiogenic isotope-enriched peridotites, leading to the loss of old lithospheric mantle. |
| WOS关键词 | MELT/ROCK REACTION ; ULTRAMAFIC ROCK ; PERIDOTITE ; XENOLITHS ; BENEATH ; HARZBURGITE ; EVOLUTION ; DUNITE ; MAGMA ; ANDESITES |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000222902200021 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79579]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, HF |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, HF,Ying, JF,Xu, P,et al. Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle[J]. CHINESE SCIENCE BULLETIN,2004,49(9):961-966. |
| APA | Zhang, HF,Ying, JF,Xu, P,&Ma, YG.(2004).Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle.CHINESE SCIENCE BULLETIN,49(9),961-966. |
| MLA | Zhang, HF,et al."Mantle olivine xenocrysts entrained in Mesozoic basalts from the North China craton: Implication for replacement process of lithospheric mantle".CHINESE SCIENCE BULLETIN 49.9(2004):961-966. |
入库方式： OAI收割
来源：地质与地球物理研究所
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