Geology of the Grove Mountains in East Antarctica - New evidence for the final suture of Gondwana Land
文献类型：期刊论文
| 作者 | Liu, XH; Zhao, Y; Liu, XC; Yu, LJ |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 46期号:4页码:305-319 |
| 关键词 | East Antarctic Shield Grove Mountains Pan-African Orogen Gondwana Land final suture |
| ISSN号 | 1006-9313 |
| 文献子类 | Article |
| 英文摘要 | Grove Mountains consists mainly of a series of high-grade (upper amphibolite to granulite facies) metamorphic rocks, including felsic granulite, granitic gneiss, mafic granulite lenses and charnockite, intruded by late tectonic gneissic granite and post-tectonic granodioritic veins. Geochemical analysis demonstrates that the charnockite, granitic gneiss and granite belonged to aluminous A type plutonic rocks, whereas the felsic and mafic granulite were from supracrustal materials as island-arc, oceanic island and middle oceanic ridge basalt. A few high-strained shear zones disperse in regional stable sub-horizontal foliated metamorphic rocks. Three generations of ductile deformation were identified, in which D, is related to the event before Pan-African age, D-2 corresponds to the regional granulite peak metamorphism, whereas D-3 reflects ductile extension in late Pan-African orogenic period. The metamorphic reactions from granitic gneiss indicate a single granulite facies event, but 3 steps from mafic granulite, with P-T condition of M, 800degreesC, 9.3 X 10(5) Pa; M-2 800-810degreesC, 6.4 X 10(5) Pa; and M-3 650degreesC have been recognized. The U-Pb age data from representative granitic gneiss indicate (529+/-14) Ma of peak metamorphism, (534 5) Ma of granite emplacement, and (501 7) Ma of post-tectonic granodioritic veins. All these evidences suggest that a huge Pan-African aged mobile belt exists in the East Antarctic Shield extending from Prydz Bay via Grove Mountains to the southern Prince Charles Mountains. This orogenic belt could be the final suture during the Gondwana Land assemblage. |
| WOS关键词 | PRYDZ BAY AREA ; LARSEMANN-HILLS ; MOZAMBIQUE BELT ; WEST GONDWANA ; MOBILE BELT ; RAUER GROUP ; SRI-LANKA ; METAMORPHISM ; DEFORMATION ; GRANULITES |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000181791400001 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78373]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, XH |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Lab Lithosphere Tecton Evolut, 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 | Liu, XH,Zhao, Y,Liu, XC,et al. Geology of the Grove Mountains in East Antarctica - New evidence for the final suture of Gondwana Land[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2003,46(4):305-319. |
| APA | Liu, XH,Zhao, Y,Liu, XC,&Yu, LJ.(2003).Geology of the Grove Mountains in East Antarctica - New evidence for the final suture of Gondwana Land.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,46(4),305-319. |
| MLA | Liu, XH,et al."Geology of the Grove Mountains in East Antarctica - New evidence for the final suture of Gondwana Land".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 46.4(2003):305-319. |
入库方式： OAI收割
来源：地质与地球物理研究所
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