PETROGENESIS OF GARNET-BEARING ULTRAMAFIC ROCKS AND ASSOCIATED ECLOGITES IN THE SU-LU ULTRAHIGH-P METAMORPHIC TERRANE, EASTERN CHINA
文献类型：期刊论文
| 作者 | ZHANG, RY; LIOU, JG; CONG, BL |
| 刊名 | JOURNAL OF METAMORPHIC GEOLOGY
 |
| 出版日期 | 1994-03-01 |
| 卷号 | 12期号:2页码:169-186 |
| 关键词 | Eastern China Eclogite Ultrahigh-p Metamorphism Ultramafic Rock Upper Mantle |
| ISSN号 | 0263-4929 |
| 文献子类 | Article |
| 英文摘要 | Ultramafic blocks that themselves contain eclogite lenses in the Triassic Su-Lu ultrahigh-P terrane of eastern China range in size from hundreds of metres to kilometres. The ultramafic blocks are enclosed in quartzofeldspathic gneiss of early Proterozoic age. Ultramafic rocks include garnetiferous lherzolite, wehrlite, pyroxenite, and hornblende peridotite. Garnet lherzolites are relatively depleted in Al2O3 (<3.8 wt%), CaO (<3.2%) and TiO2 (<0.11 wt%), and are low in total REE contents (several p.p.m.), suggesting that the rocks are residual mantle material that was subjected to low degrees of partial melting. The eclogite lenses or layers within the ultramafic rocks are characterized by higher MgO and CaO, lower Al2O3 and TiO2 contents, and a higher CaO/Al2O3 ratio compared to eclogites enclosed in the quartzofeldspathic gneiss. Scatter in the plots of major and trace elements vs. MgO, REE patterns and La, Sm and Lu contents suggest that some eclogites were derived from melts formed by various degrees (0.05-0.20) of partial melting of peridotite, and that other eclogites formed by accumulation of garnet and clinopyroxene +/- trapped melt in the upper mantle. |
| WOS关键词 | ORTHO-PYROXENE ; COESITE ; PERIDOTITES ; GEOTHERMOMETER ; CLINOPYROXENE ; SOLUBILITY ; COMPLEX ; GEOTHERMOBAROMETRY ; TRANSFORMATION ; ORTHOPYROXENE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:A1994MV40600005 |
| 出版者 | BLACKWELL SCIENCE INC |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/80388]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | ZHANG, RY |
| 作者单位 | CHINESE ACAD SCI,INST GEOL,BEIJING,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | ZHANG, RY,LIOU, JG,CONG, BL. PETROGENESIS OF GARNET-BEARING ULTRAMAFIC ROCKS AND ASSOCIATED ECLOGITES IN THE SU-LU ULTRAHIGH-P METAMORPHIC TERRANE, EASTERN CHINA[J]. JOURNAL OF METAMORPHIC GEOLOGY,1994,12(2):169-186. |
| APA | ZHANG, RY,LIOU, JG,&CONG, BL.(1994).PETROGENESIS OF GARNET-BEARING ULTRAMAFIC ROCKS AND ASSOCIATED ECLOGITES IN THE SU-LU ULTRAHIGH-P METAMORPHIC TERRANE, EASTERN CHINA.JOURNAL OF METAMORPHIC GEOLOGY,12(2),169-186. |
| MLA | ZHANG, RY,et al."PETROGENESIS OF GARNET-BEARING ULTRAMAFIC ROCKS AND ASSOCIATED ECLOGITES IN THE SU-LU ULTRAHIGH-P METAMORPHIC TERRANE, EASTERN CHINA".JOURNAL OF METAMORPHIC GEOLOGY 12.2(1994):169-186. |
入库方式： OAI收割
来源：地质与地球物理研究所
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