Records of Indosinian orogenesis in Lhasa terrane, Tibet
详细信息 查看全文
- 作者：Huaqi Li (1)
Zhiqin Xu (1)
Jingsui Yang (1)
Zhihui Cai (1)
Songyong Chen (1)
Zemin Tang (1) - 关键词：Lhasa terrane ; eclogite ; ductile shear belt ; 40Ar ; 39Ar geochronology ; Indosinian orogenesis
- 刊名：Journal of Earth Science
- 出版年：2009
- 出版时间：April 2009
- 年：2009
- 卷：20
- 期：2
- 页码：348-363
- 全文大小：2513KB
- 参考文献：1. Bureau of geology and mineral resources of tibet autonomous region, 1994. 1:200 000 regional geological survey talks of xiabatang sheet, china. (in chinese)
2. Chen, S. Y., Yang, J. S., Luo, L. Q., et al., 2007. MORB-Type Eclogites in the Lhasa Block, Tibet, China: Petrochemical Evidence. / Geol. Bull. Chin., 26(10): 1327-339 (in Chinese with English Abstract)
3. Chen, W., Guo, Y. R., Cui, B., et al., 2001. The MDD Model 40Ar-39Ar Age Dating Technique and the Cooling History of the Altyn Mountain. / J. Chin. Mass Spectr. Soc., 22(3):7-4 (in Chinese with English Abstract)
4. Chen, X. Y., Wang, Y. J., Fan, W. M., et al., 2006. Microstructure Characteristics of NE Trend Ductile Shear Zones of Southwestern Hainan: Constraints from 40Ar-39Ar Geochronology. / Geochimica, 35(5): 479-88 (in Chinese with English Abstract)
5. Fromaget, J., 1934. Observations et Reflexions Sur La Geologie StratigraPhique et Structurale de I’Indochine. / Bull. Soc. Geol., 5(4): 101-64
6. Huang, T. K., 1945. On Major Tectonic Forms of China. / Geological Memoirs of National Geological Survey of China, 20: 1-65
7. Kapp, J., Harrison, T. M., Kapp, P., 2005. Nyainqentanglha Shan: A Window into the Tectonic, Thermal and Geochemical Evolution of the Lhasa Block, Southern Tibet. / J. Geophys. Res., 110(B8): 1-3 CrossRef
8. Li, C., Zhai, Q. G., Dong, Y. S., et al., 2006. Discovery of Eclogite and Its Geological Significance in Qiangtang Area, Central Tibet. / Chin. Sci. Bull., 51(9): 1095-100 CrossRef
9. Li, G. M., Feng, X. L., Huang, Z. Y., et al., 2000. The Multiple Island Arc-Basin Systems and Their Evolution in the Gangdise Tectonic Belt, Xizang. / Sediment. Geol. and Teth. Geol., 20(4): 38-6 (in Chinese with English Abstract)
10. Li, T. F., Yang, J. S., Li, Z. L., et al., 2007. Petrography and Metamorphic Evolution of the Sumdo Eclogite, Qinghai-Tibetan Plateau. / Geol. Bull. Chin., 26(10): 1310-326 (in Chinese with English Abstract)
11. Ren, J. S., Qu, J. C., 1966. The Determination of Indosinian Geosyncline Fold Belt in Lanping and Weixi, Yunnan Province. / Acta Geol. Sin., 46(2): 182-00 (in Chinese)
12. Sengor, A. M. C., 1984. The Climmeride Orogenic System and the Tectonic of Eurasia. / Geol. Soc. Am. Spec. Pap., 195:85
13. Song, B., Zhang, Y. H., Wan, Y. S., et al., 2002. SHRIMP Sampling, Dating and Issue on Its Relation. / Geol. Rev., 48(Suppl.): 26-0 (in Chinese with English Abstract)
14. Xiao, X. C., Li, T. D., Li, G. C., 1988. Tectonic Evolution of the Crust-Upper Mantle of the Qinghai-Xizang (Tibet) Plateau. Geological Publishing House, Beijing (in Chinese with English Abstract)
15. Xu, X. Z., Yang, J. S., Li, T. F., et al., 2007. SHRIMP U-Pb Ages and Inclusions of Zircons from the Sumdo Eclogites in the Lhasa Block, Tibet, China. / Geol. Bull. Chin., 26(10): 1340-355 (in Chinese with English Abstract)
16. Xu, Z. Q., Yang, J. S., Li, H. B., et al., 2007. Orogenic Plateaux-Terrain Amalgamation, Collision and Uplift in the Qinghai-Tibet Plateau. Geological Publishing House, Beijing. 182-96 (in Chinese with English Abstract)
17. Yang, J. S., Xu, Z. Q., Geng, Q. R., et al., 2006. A Possible New HP/UHP () Metamorphic Belt in China: Discovery of Eclogite in the Lhasa Block, Tibet. / Acta Geol. Sin., 80(12): 1787-792 (in Chinese with English Abstract)
18. Yang, J. S., Xu, Z. Q., Li, T. F., et al., 2007. Oceanic Subduction-Type Eclogite in the Lhasa Block, Tibet, China: Remains of the Paleo-Tethys Ocean Basin / Geol. Bull. Chin., 26(10): 1277-287 (in Chinese with English Abstract)
19. Yin, A., Harrison, T. M., 2000. Geologic Evolution of the Himalayan-Tibetan Orogen. / Earth Planet. Sci. Lett., 28: 211-80 CrossRef
20. Zhang, S. Q., Wang, B. Z., Wang, J., et al., 2000. Constitution and Metamorphism of the Songduo Group on the Southern Margin of Gandise B type Mountains Xizang, China. / J. Xi’an Eng. Univ., 22(3): 5-0 (in Chinese with English Abstract) - 作者单位：Huaqi Li (1)
Zhiqin Xu (1)
Jingsui Yang (1)
Zhihui Cai (1)
Songyong Chen (1)
Zemin Tang (1)
1. Key Laboratory for Continental Dynamics of the Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037, China - ISSN：1867-111X
文摘
Based on the deformation characteristics of the ductile shear zones in Sumdo () Group, the quartz fabric by EBSD (electron backscatter diffraction), the data of muscovite 40Ar-39Ar geochronology (220-30 Ma) from ductile shear zones and the zircon SHRIMP U-Pb chronology (190 Ma) of granites in Sumdo region, Lhasa () terrane is thought to have experienced an important Indosinian orogenic event at 220-30 Ma, which caused the closure of the paleo-Tethys Ocean along the tectonic zone of eclogite and the collision between northern part and southern part of the Lhasa terrane. The zircon SHRIMP U-Pb chronology of 190 Ma for biotite adamellite, with the distributing characteristics of the granite massif intruding in Sumdo Group, indicates that the biotite adamellite should be the late orogenic or post-orogenic granite resulting from the Indosinian orogenesis. The discovery of Indosinian orogenic belt in Lhasa terrane expansed the southern boundary of Indosinian orogenic belt in Qinghai ()-Tibet plateau to Lhasa terrane from Qiangtang () terrane, which changed the understanding about the distribution of Indosinian orogenic belt in Qinghai-Tibet plateau and extended the “T-type Indosinian orogenic belt in China. The study is very important for the formation and distribution of paleo-Tethys Ocean in Tibet. The ancient terrane framework and evolution of Qinghai-Tibet plateau need further research.