秦嶺古生代花崗巖的成因：來自鋯石U-Pb年代學、地球化學和同位素的證據(jù)
發(fā)布時間：2020-12-21 18:04
由于花崗巖記錄了陸殼演化的重要信息,所以其成因問題被越來越多的學者所關注。秦嶺造山帶出露大量的古生代花崗巖。在過去的幾十年中,大家普遍認為這些花崗巖的成因十分重要。本學位論文選擇北秦嶺造山帶出露的高Mg閃長巖和桐柏造山帶出露的過堿性A型花崗巖為研究對象,并且將這些古生代花崗巖的成因和交代地幔相聯(lián)系。本學位論文就北秦嶺看峰溝巖體和桐柏造山帶黃羊山巖體進行了詳細的鋯石微區(qū)U-Pb同位素測定、全巖主微量分析、全巖Sr-Nd和鋯石Hf-O同位素測定。系統(tǒng)的LA-ICP-MS鋯石U-Pb同位素分析表明二郎坪高Mg花崗閃長巖形成于約440 Ma。這些高Mg花崗閃長巖有適中的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）。全巖部分微量元素組成與陸殼相似:有高的Ba（524-113...
【文章來源】：中國地質大學湖北省 211工程院校 教育部直屬院校
【文章頁數(shù)】：96 頁
【學位級別】：博士
【文章目錄】：
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
【參考文獻】：
期刊論文
[1]東秦嶺-大別山及其兩側的巖漿和變質事件年代學及其形成的大地構造背景[J]. 蘇文,劉景波,陳能松,郭順,巴金,張璐,劉新,施雨新. 巖石學報. 2013(05)
[2]東秦嶺陡嶺雜巖花崗巖的Sr-Nd-Pb同位素特征及其地質意義[J]. 楊斌虎,張成立,李雷. 地質通報. 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]地殼根、造山熱與巖漿作用[J]. 馬昌前,佘振兵,張金陽,張超. 地學前緣. 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]秦嶺造山帶泥盆紀的沉積體系與古地理格局演化[J]. 梅志超,孟慶任,崔智林,屈紅軍. 古地理學報. 1999(01)
本文編號：2930248
【文章來源】：中國地質大學湖北省 211工程院校 教育部直屬院校
【文章頁數(shù)】：96 頁
【學位級別】：博士
【文章目錄】：
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
【參考文獻】：
期刊論文
[1]東秦嶺-大別山及其兩側的巖漿和變質事件年代學及其形成的大地構造背景[J]. 蘇文,劉景波,陳能松,郭順,巴金,張璐,劉新,施雨新. 巖石學報. 2013(05)
[2]東秦嶺陡嶺雜巖花崗巖的Sr-Nd-Pb同位素特征及其地質意義[J]. 楊斌虎,張成立,李雷. 地質通報. 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]地殼根、造山熱與巖漿作用[J]. 馬昌前,佘振兵,張金陽,張超. 地學前緣. 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]秦嶺造山帶泥盆紀的沉積體系與古地理格局演化[J]. 梅志超,孟慶任,崔智林,屈紅軍. 古地理學報. 1999(01)
本文編號：2930248
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