秦岭古生代花岗岩的成因：来自锆石U-Pb年代学、地球化学和同位素的证据
发布时间：2020-12-21 18:04
由于花岗岩记录了陆壳演化的重要信息,所以其成因问题被越来越多的学者所关注。秦岭造山带出露大量的古生代花岗岩。在过去的几十年中,大家普遍认为这些花岗岩的成因十分重要。本学位论文选择北秦岭造山带出露的高Mg闪长岩和桐柏造山带出露的过碱性A型花岗岩为研究对象,并且将这些古生代花岗岩的成因和交代地幔相联系。本学位论文就北秦岭看峰沟岩体和桐柏造山带黄羊山岩体进行了详细的锆石微区U-Pb同位素测定、全岩主微量分析、全岩Sr-Nd和锆石Hf-O同位素测定。系统的LA-ICP-MS锆石U-Pb同位素分析表明二郎坪高Mg花岗闪长岩形成于约440 Ma。这些高Mg花岗闪长岩有适中的SiO2（60.48-64.67 wt.%）和K2O（1.21-2.10 wt.%）、高Al2O3（15.44-16.51 wt.%）和Na2O（4.01-4.81 wt.%）含量、高MgO含量（2.30-3.44 wt.%）和高Mg#（53.35-56.66）。全岩部分微量元素组成与陆壳相似:有高的Ba（524-113...
【文章来源】：中国地质大学湖北省 211工程院校 教育部直属院校
【文章页数】：96 页
【学位级别】：博士
【文章目录】：
Resume of the Author
摘要
abstract
Chapter 1 Introduction
1.1 Research Status and Scientific Issues of granites
1.1.1 Evolution of granites
1.1.2 Zircon and granite evolution
1.1.3 Early Paleozoic granites in the Qinling-Tongbai Orogen
1.2 Research objectives and significance
1.2.2 Research objectives
1.2.4 Research Significance
1.3 Structure of the thesis
1.4 Workload
Chapter 2 Regional Geology
Chapter 3 Methodology
3.1 Introduction
3.2 Zircon Geochronology
3.3 In-situ zircon Lu-Hf and O isotope analyses
3.4 Whole-rock elemental and Sr-Nd analyses
Chapter 4 Paleozoic high-Mg granodiorite from the North Qinling Belt .
4.1 Introduction
4.2 Results
4.2.2 LA-ICPMS U-Pb dating
4.2.3. Hf isotope
4.2.4. O isotope
4.2.5. Whole-rock geochemistry
4.2.6. Sr-Nd isotopes
4.3. Discussion
4.3.1. Formation ages of the Erlangping granodiorite pluton
4.3.2. Petrological classification
4.3.3. Petrogenesis of the high-Mg granodiorite
Chapter 5 Early Paleozoic Peralkaline A-type granitoids from the South Qinling Orogen
5.1 Introduction
5.2 Results
5.2.1 LA-ICPMS U-Pb dating
5.2.2 Hf-O isotope compositions
5.2.3 Geochemical characteristics
5.3 Discussion
5.3.1 Geochronology of the Huangyangshan pluton
5.3.2 Petrological classification of the Huangyangshan granite
5.3.3 Zircon geothermometry
5.3.4 Petrogenesis of the Huangyangshan A-type magmatism
Chapter 6 Tectonic interpretation
Chapter 7 Conclusion & Recommendation
7.1 Conclusion
7.2 Recommendation
Acknowledgements
References
【参考文献】：
期刊论文
[1]东秦岭-大别山及其两侧的岩浆和变质事件年代学及其形成的大地构造背景[J]. 苏文,刘景波,陈能松,郭顺,巴金,张璐,刘新,施雨新. 岩石学报. 2013(05)
[2]东秦岭陡岭杂岩花岗岩的Sr-Nd-Pb同位素特征及其地质意义[J]. 杨斌虎,张成立,李雷. 地质通报. 2011(Z1)
[3]Timing of the Wudangshan, Yaolinghe volcanic sequences and mafic sills in South Qinling: U-Pb zircon geochronology and tectonic implication[J]. LING WenLi1,2, REN BangFang1,2, DUAN RuiChun1,2, LIU XiaoMing1,3, MAO XinWu4, PENG LianHong4, LIU ZaoXue4, CHENG JianPing1 & YANG HongMei1,2 1 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China; 2 State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Wuhan 430074, China; 3 State Key Laboratory of Continental Geodynamics, Northwest University, Xi’an 710069, China; 4 Geological Survey of Hubei Province, Wuhan 430022, China. Chinese Science Bulletin. 2008(14)
[4]Making continental crust:The sanukitoid connection[J]. Yoshiyuki TATSUMI. Chinese Science Bulletin. 2008(11)
[5]地壳根、造山热与岩浆作用[J]. 马昌前,佘振兵,张金阳,张超. 地学前缘. 2006(02)
[6]Silurian A-type granitoids in the southern margin of the Tongbai-Dabieshan: Evidence from SHRIMP zircon geochronology and geochemistry[J]. MA Changqian, SHE Zhenbing, XU Pin & WANG Lingyan State Key Laboratory of Geological Processes and Mineral Resources, and Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China. Science in China(Series D:Earth Sciences). 2005(08)
[7]Genesis of zircon and its constraints on interpretation of U-Pb age[J]. WU Yuanbao & ZHENG Yongfei School of Earth and Space Sciences,University of Science and Technol- ogy of China,Hefei 230026,China Correspondence should be addressed to Wu Yuanbao(e-mail: ybwu @ustc.edu.cn). Chinese Science Bulletin. 2004(15)
[8]秦岭造山带泥盆纪的沉积体系与古地理格局演化[J]. 梅志超,孟庆任,崔智林,屈红军. 古地理学报. 1999(01)
本文编号：2930248
【文章来源】：中国地质大学湖北省 211工程院校 教育部直属院校
【文章页数】：96 页
【学位级别】：博士
【文章目录】：
Resume of the Author
摘要
abstract
Chapter 1 Introduction
1.1 Research Status and Scientific Issues of granites
1.1.1 Evolution of granites
1.1.2 Zircon and granite evolution
1.1.3 Early Paleozoic granites in the Qinling-Tongbai Orogen
1.2 Research objectives and significance
1.2.2 Research objectives
1.2.4 Research Significance
1.3 Structure of the thesis
1.4 Workload
Chapter 2 Regional Geology
Chapter 3 Methodology
3.1 Introduction
3.2 Zircon Geochronology
3.3 In-situ zircon Lu-Hf and O isotope analyses
3.4 Whole-rock elemental and Sr-Nd analyses
Chapter 4 Paleozoic high-Mg granodiorite from the North Qinling Belt .
4.1 Introduction
4.2 Results
4.2.2 LA-ICPMS U-Pb dating
4.2.3. Hf isotope
4.2.4. O isotope
4.2.5. Whole-rock geochemistry
4.2.6. Sr-Nd isotopes
4.3. Discussion
4.3.1. Formation ages of the Erlangping granodiorite pluton
4.3.2. Petrological classification
4.3.3. Petrogenesis of the high-Mg granodiorite
Chapter 5 Early Paleozoic Peralkaline A-type granitoids from the South Qinling Orogen
5.1 Introduction
5.2 Results
5.2.1 LA-ICPMS U-Pb dating
5.2.2 Hf-O isotope compositions
5.2.3 Geochemical characteristics
5.3 Discussion
5.3.1 Geochronology of the Huangyangshan pluton
5.3.2 Petrological classification of the Huangyangshan granite
5.3.3 Zircon geothermometry
5.3.4 Petrogenesis of the Huangyangshan A-type magmatism
Chapter 6 Tectonic interpretation
Chapter 7 Conclusion & Recommendation
7.1 Conclusion
7.2 Recommendation
Acknowledgements
References
【参考文献】：
期刊论文
[1]东秦岭-大别山及其两侧的岩浆和变质事件年代学及其形成的大地构造背景[J]. 苏文,刘景波,陈能松,郭顺,巴金,张璐,刘新,施雨新. 岩石学报. 2013(05)
[2]东秦岭陡岭杂岩花岗岩的Sr-Nd-Pb同位素特征及其地质意义[J]. 杨斌虎,张成立,李雷. 地质通报. 2011(Z1)
[3]Timing of the Wudangshan, Yaolinghe volcanic sequences and mafic sills in South Qinling: U-Pb zircon geochronology and tectonic implication[J]. LING WenLi1,2, REN BangFang1,2, DUAN RuiChun1,2, LIU XiaoMing1,3, MAO XinWu4, PENG LianHong4, LIU ZaoXue4, CHENG JianPing1 & YANG HongMei1,2 1 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China; 2 State Key Laboratory of Geological Process and Mineral Resources, China University of Geosciences, Wuhan 430074, China; 3 State Key Laboratory of Continental Geodynamics, Northwest University, Xi’an 710069, China; 4 Geological Survey of Hubei Province, Wuhan 430022, China. Chinese Science Bulletin. 2008(14)
[4]Making continental crust:The sanukitoid connection[J]. Yoshiyuki TATSUMI. Chinese Science Bulletin. 2008(11)
[5]地壳根、造山热与岩浆作用[J]. 马昌前,佘振兵,张金阳,张超. 地学前缘. 2006(02)
[6]Silurian A-type granitoids in the southern margin of the Tongbai-Dabieshan: Evidence from SHRIMP zircon geochronology and geochemistry[J]. MA Changqian, SHE Zhenbing, XU Pin & WANG Lingyan State Key Laboratory of Geological Processes and Mineral Resources, and Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China. Science in China(Series D:Earth Sciences). 2005(08)
[7]Genesis of zircon and its constraints on interpretation of U-Pb age[J]. WU Yuanbao & ZHENG Yongfei School of Earth and Space Sciences,University of Science and Technol- ogy of China,Hefei 230026,China Correspondence should be addressed to Wu Yuanbao(e-mail: ybwu @ustc.edu.cn). Chinese Science Bulletin. 2004(15)
[8]秦岭造山带泥盆纪的沉积体系与古地理格局演化[J]. 梅志超,孟庆任,崔智林,屈红军. 古地理学报. 1999(01)
本文编号：2930248
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