Metamorphism of mafic granulites in the Grove Mountains, East Antarctica
文献类型：期刊论文
| 作者 | Yu, LJ; Liu, XH; Zhao, Y; Ju, YT; Liu, XC |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2002-10-01 |
| 卷号 | 18期号:4页码:501-516 |
| 关键词 | mafic granulite ITD high-pressure granulite Grove Mountains East Antarctica |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Mafic granulites and amphibolites crop out in the Grove Mountains (GMs), 450km south of Zhongshan Station on the coast of Prydz Bay, East Antarctica. Most metamorphic reaction textures suggest that the high-grade metamorphic rocks were formed by a single-granulite facies event. But, the garnet-bearing mafic granulites exhibit corona of Opx + Pl + minor Hbl on garnet, formed after peak metamorphic conditions (M-1), The corona was originated during a second metamorphic event (M-2) via the reaction Grt + Cpx + SiO2 = Opx + Pl. The mafic granulite shows a near-isothermal decompression (ITD) P-T history from 0.93 GPa and >800degreesC (M-1) based on the assemblage of garnet core with Cpx-Pl-Qtz occurred as inclusion within. the garnet to 0.65GPa and 733 similar to 850degreesC (M-2), followed by 0.46 similar to 0.61 GPa (M-3). Conventionally, this clockwise P-T path can be explained in a model involving extensional collapse and exhumation of thickened crust, which can be compared with that of Larsemann Hills East Antarctica. Based on metamorphic temperatures and pressures estimated by geothermometer - geobarometer, we proposed that the mafic granulite from Grove Mountains, East Antarctica, might be the high-pressure granulite. |
| WOS关键词 | PRYDZ BAY AREA ; LARSEMANN-HILLS ; CONTINENTAL-CRUST ; RAUER GROUP ; PRESSURE ; GARNET ; TEMPERATURE ; EVOLUTION ; PATHS ; ROCKS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000179484500009 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78023]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yu, LJ |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, LTE Lab, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, LJ,Liu, XH,Zhao, Y,et al. Metamorphism of mafic granulites in the Grove Mountains, East Antarctica[J]. ACTA PETROLOGICA SINICA,2002,18(4):501-516. |
| APA | Yu, LJ,Liu, XH,Zhao, Y,Ju, YT,&Liu, XC.(2002).Metamorphism of mafic granulites in the Grove Mountains, East Antarctica.ACTA PETROLOGICA SINICA,18(4),501-516. |
| MLA | Yu, LJ,et al."Metamorphism of mafic granulites in the Grove Mountains, East Antarctica".ACTA PETROLOGICA SINICA 18.4(2002):501-516. |
入库方式： OAI收割
来源：地质与地球物理研究所
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