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地质学报  2003 

湘东北中生代望湘花岗岩体岩石地球化学特征及其构造环境

, PP. 98-103

Keywords: 构造环境岩石地球化学花岗岩中生代微量元素岩石圈

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Abstract:

华南中生代构造由早期的挤压转为晚期的拉张,确定这种构造转折时期对认识华南大地构造演化具有重要意义。花岗岩的多期次侵入往往是不同构造环境的产物,不同构造环境花岗岩表现出岩石地球化学组成上的差别。本文对湘东北望湘花岗岩体不同期次岩石地球化学研究后,认为257~165Ma,151~144Ma,135~128Ma3个侵入期的花岗质岩石分别在TiO_2,K/Rb,Rb/Sr,∑REE,δEu及微量元素组成上存在较大的差异,反映为不同的产出构造环境,分别代表印支期的挤压构造环境、燕山早期的剪切―走滑环境和燕山晚期的伸展―滑脱环境。J_3―K_1(140Ma±)是挤压―剪切与伸展―拉张构造环境的转折期,前者表现为岩石圈增厚,后者表现为岩石圈减薄,湘东南大规模金属及铀矿的形成多与岩石圈减薄期花岗质小岩体有成因联系。

References

[1]  Browm G C. 1982. Calc-alkaline intrusive rocks: their diversity,evolution and relation to volcanic arcs. In: Thorpe R S, ed. AndesitesOrogenic Andesites and Related Rocks. New York:John Wiley and Sons,437~464.
[2]  Deng Qidong. 1996. Active tectonics in China. Geological Review,42 (4) :295~299 (in Chinese with English abstract).
[3]  Eby G N. 1992. Chemical subdivision of the A-type granitoids: Petrogenetic and tectonic implications. Geology, 20: 641 ~ 644.
[4]  Huang Jiqing,Ren Jishun,Jiang Chunfa, et al. 1977. Basic tectonic configuration in China. Acta Geologica Sinica, 51 (2):117~ 135 (in Chinese with English abstract).
[5]  Li Sitian, Lu Fengxiang, Lin Changsong, et al. 1997. Geotectonic background of the Mesozoic and Cenozoic rifting in East China and adjacent areas. Wuhan: China University of Geoscience Press, 239~256 (in Chinese).
[6]  Li Xianghua. 1999. Cretaceous magmatism and lithospheric extension: constraints from geochronology and geochemistry. In: Institute of Geochemistry of Chinese Academy of Science,ed. Rrsources,Environment and Sustainable Development. Beijing: Science Press,264~275 (in Chinese).
[7]  Pearce J A, Harris N B W, Tindle A G. 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. J. Petrol. , 25:956~983.
[8]  Rao Jiarong, Wang Jiheng, Cao Yizhong. 1993. Deep structure in Hunan. Hunan Geology, (Suppl. 7) :24~148 (in Chinese).
[9]  Tao Kuiyuan. 1992. Discussion on the characteristics of volcanic belt of circum-Pacific continent in the Southeastern Coast of China. Beijing: Geological Publishing House,1~13 (in Chinese).
[10]  Tu Guangchi et al. 1984. Geochemistry. Shanghai: Shanghai Science and Technology Publishing House (in Chinese).
[11]  Wang Yuejun,Fan Weiming,Guo Feng, et al. 2001. Petrological and geochemical chatacteristics of Mesozoic granodioritic intrusions in Southeast Hunan Province, China. Acta Petrologica Sinica, 17(1):169~175 (in Chinese with English abstract).
[12]  Yuan Xuecheng, et al. 1990. Taiwan-Heishui geoscience section. Geophysica Society Annual Repot. Beijing: Seismological Press, 1~125 (in Chinese).
[13]  Yu Chongwen. 1994. Dynamics of hydrothermal mineralization. Wuhan: China University of Geoscience Press, 126 ~ 228 (in Chinese).
[14]  Guo Fuxiang. 1998. Meso-Cenozoic Nanhua(South China)orogenic belt-subaerial tridirectional orogen. Acta Geologica Sinica,72(1):22~32 (in Chinese with English abstract).
[15]  Hunan Regional Geological Survey. 1988. Geology of Hunan Province. Beijing: Geological Publishing House, 83~ 98 (in Chinese).
[16]  Mao Jingwen, Li Hongyan, Pei Rongfu. 1995. Geochemistry and mineralization of Qianlishan rock body in Hunan Province. Mineral Deposits, 14(1): 12~24 (in Chinese with English abstract).
[17]  Ren Jishun,Chen Tingyu,Niu Baogui, et al. 1990. Tectonic Evolution of the Continental Lithosphere and Metallogeny in Earstern China and Adjacent Areas. Beijing:Science Press,1~205 (in Chinese).
[18]  Tu Guangchi. 1994. Some progresses pertaining to super-large ore deposits. The Frontier of Earth Science, 1:45 ~ 53 (in Chinese with English abstract).
[19]  Wu Liren. 1985. Mesozoic granitoids in Eastern China. Acta Petrologica Sinica, 1 ( 1 ) : 1 ~ 10 (in Chinese with English abstract ).
[20]  Zhao Zhenhua, Bao Zhiwei, Zhang Boyou. 1998. Geochemical characteristics of Mesozoic basaltic rocks in Hunan Province. Science in China (Series D),28(Suppl. ):7~14 (in Chinese).
[21]  Zhuang Jinliang, Liu Zhongwei,Tan Bixiang, et al. 1988. Relation of the small rock bodies in southern Hunan to the formation of ore deposits and prognosis of concealed deposits. Hunan Geology, (Suppl. 4): 1~198 (in Chinese).

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