| 东昆仑—西秦岭造山带对接处三叠纪花岗质岩石时空演化、物源特征对比及其大地构造意义 |
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| 关键词:granitic rocks zircon geochronology Nd-Hf isotopic mapping magmatism evolution the eastern part of East Kunlun and the western part of West Qinling |
| 基金项目:中国地质调查局项目(编号: 12120113094000; 1212010811033; 1212011120115; 20160123); 国家自然科学基金(编号: 41172062; 41572052) |
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| Temporal-spatial Variations, Sources and Tectonic Significances of the Triassic Granitic Rocks in the Junction Part of the East Kunlun and West Qinling Orogen, Central China |
| The composition and evolution of orogen is the main subject of tectonic study, and the connection relationship between orogens is an important node in orogenic study. In the junction part of two orogenic belts, the contrast of tectonic-magmatic evolution between two orogens, especially contrast of deep crustal composition structure and basement affinity, can provide an important basis to completely under-stand the basement nature and tectonic affinity of the orogen. Based on its advantages in geochronology, regional widely distributed and easily tracing, Nd-Hf isotopic mapping for granitic rocks has gradually be-come an effective approach to delineate tec-tono-thermal evolution of the orogen, elucidate oro-genic composition and contrast basement nature be-tween two orogens. |
| REN Hai-dong,WANG Tao.2017.Temporal-spatial Variations, Sources and Tectonic Significances of the Triassic Granitic Rocks in the Junction Part of the East Kunlun and West Qinling Orogen, Central China[J].Acta Geoscientica Sinica,38(s1):59-63. |
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