Petrochemistry and geochemistry of HP metabasites from Haiyangsuo in Sulu UHP belt of eastern China
文献类型：期刊论文
| 作者 | Guo, JH; Zhai, MG; Ye, K; Liu, WJ; Cong, BL |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2002 |
| 卷号 | 45期号:1页码:21-33 |
| 关键词 | ecoligitized granulite trace element Pearce's element ratio Sulu UHP belt |
| ISSN号 | 1006-9313 |
| 文献子类 | Article |
| 英文摘要 | Abundant metabasites occur in highly deformed granitic and migmatitic gneisses as blocks and lenses of tens of meter size around the Haiyangsuo area, northeast part of Sulu UHP belt, eastern China. They comprise garnet-pyroxene granulites, eclogitized granulites and amphibolites. Their protolith compositions were mainly olivine tholeiite and quartz tholeiite, and show variation from Mg-rich to Fe-rich component as tholeiitic cumulates, Pearce's element ratio slopes suggested that protolith of these rocks were comagmatic, and generated from a primary magma by fractional crystallization of plagioclase, olivine and clinopyroxene. The crystallization differentiation has also been evidenced by trace elements, such as parallel REE patterns, Ni vs Ce variations, Sr increasing depletions, although the large ion lithophile elements (LILE) were modified to different extent during metamorphism. Trace element composition and Nd isotopes indicate a depleted mantle origin for these rocks. But they are not likely to be fragments of ophiolites or tholeiites connected with subduction, they formed probably at intra-continent environment. Sm-Nd whole rock isochron age of 2252 +/- 180Ma indicates approximately the formation age of igneous protolith of these rocks, almost 2000Ma earlier than the formation of the Dabie-Sulu UHP collision zone at about 240-220 Ma. |
| WOS关键词 | COESITE-BEARING ECLOGITES ; COLLISION ; ROCKS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000175271800003 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/77907]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Guo, JH |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, JH,Zhai, MG,Ye, K,et al. Petrochemistry and geochemistry of HP metabasites from Haiyangsuo in Sulu UHP belt of eastern China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2002,45(1):21-33. |
| APA | Guo, JH,Zhai, MG,Ye, K,Liu, WJ,&Cong, BL.(2002).Petrochemistry and geochemistry of HP metabasites from Haiyangsuo in Sulu UHP belt of eastern China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,45(1),21-33. |
| MLA | Guo, JH,et al."Petrochemistry and geochemistry of HP metabasites from Haiyangsuo in Sulu UHP belt of eastern China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 45.1(2002):21-33. |
入库方式： OAI收割
来源：地质与地球物理研究所
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