中國(guó)東部中生代板內(nèi)花崗巖類的成因是古太平洋板塊俯沖運(yùn)動(dòng)的結(jié)果
發(fā)布時(shí)間:2021-09-28 12:41
侏羅-白堊紀(jì)花崗巖類廣泛分布在中國(guó)大陸東部,被認(rèn)為與古太平洋板塊俯沖有關(guān)。然而,它們的確切機(jī)制和巖石成因仍不清楚;趯(duì)已有資料和野外工作的研究,Niu et al.(2015)提出假說,東南沿海的花崗巖類可能與古太平洋板塊的俯沖有直接關(guān)聯(lián),而在大陸內(nèi)部廣泛分布的花崗巖類最終與來源于滯留在地幔過渡帶古太平洋板塊的脫水作用有成因關(guān)聯(lián)。本碩士論文首次驗(yàn)證了這個(gè)假說。我們從東南沿海到內(nèi)陸小秦嶺地區(qū)采集了18個(gè)侏羅-白堊紀(jì)花崗巖類巖體,總長(zhǎng)1300 km沿著平行于推測(cè)的古太平洋板塊俯沖方向。我們做了詳細(xì)的研究,包括巖相學(xué)、鋯石U-Pb年代學(xué)、全巖主微量元素和同位素地球化學(xué)。這些巖體的鋯石結(jié)晶年齡約146到100 Ma。它們?cè)诮M成上多數(shù)是花崗巖,少數(shù)是石英二長(zhǎng)巖,花崗閃長(zhǎng)巖和正長(zhǎng)巖,富集大離子親石元素(LILEs),虧損高場(chǎng)強(qiáng)元素(HFSEs),且有Sr和Eu的負(fù)異常。這些內(nèi)陸的巖體有明顯的Nd(εNd(t)=-25.5至-10.9)和Hf(εHf(t)=-31.5至-11.3)同位素和Pb同位素(206Pb...
【文章來源】:中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院海洋研究所)山東省
【文章頁(yè)數(shù)】:69 頁(yè)
【學(xué)位級(jí)別】:碩士
【部分圖文】:
中國(guó)大陸東部的地質(zhì)簡(jiǎn)圖,顯示侏羅-白堊紀(jì)花崗巖類的分布情況(修改自中國(guó)地質(zhì)調(diào)查數(shù)據(jù)1:1,000,000地質(zhì)圖,2005)
第 2 章 區(qū)域地質(zhì)背景13圖2.1 代表性花崗巖類樣品的鏡下照片((a) 樣品 XX14-01, (b) 樣品 WY14-07, (c) 樣品TTZ14-05,(d) 樣品 CS14-01)。礦物縮寫:Pl-斜長(zhǎng)石,Qz-石英,Bt-黑云母,Kfs-鉀長(zhǎng)石,Amp-角閃石。Fig 2.1 Photomicrographs showing mineral assemblage of representative granitoids ((a) sampleXX14-01
??迥諢ǜ諮依嗟某梢蚴槍盤?窖蟀蹇楦┏逶碩?慕峁?20圖4.2 全堿(Na2O+K2O)與SiO2(TAS)相關(guān)圖表明本文所研究巖體的組成變化。在TAS圖上,這些巖體主要是花崗質(zhì)的。Fig 4.2 Total alkalis (Na2O + K2O) versus SiO2(TAS) diagramshowing the compositional variationof the plutons we study. They are mainly granitic in compositions.
【參考文獻(xiàn)】:
期刊論文
[1]Destruction of the North China Craton[J]. ZHU RiXiang 1,XU YiGang 2,ZHU Guang 3,ZHANG HongFu 1,XIA QunKe 4 & ZHENG TianYu 1 1 State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;2 State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;3 School of Resource and Environmental Engineering,Hefei University of Technology,Hefei 230009,China;4 School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China. Science China(Earth Sciences). 2012(10)
[2]Some basic concepts and problems on the petrogenesis of intra-plate ocean island basalts[J]. NIU Yaoling1,2,3 1 Department of Earth Sciences, Durham University, Durham DH1 3LE, UK; 2 School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China; 3 School of Earth and Space Sciences, Peking University, Beijing 100871, China. Chinese Science Bulletin. 2009(22)
[3]東北地區(qū)淺成低溫?zé)嵋旱V床的地質(zhì)特征和構(gòu)造背景[J]. 祁進(jìn)平,陳衍景,Franco Pirajno. 礦物巖石. 2005(02)
[4]論華南地區(qū)中生代3次大規(guī)模成礦作用[J]. 華仁民,陳培榮,張文蘭,陸建軍. 礦床地質(zhì). 2005(02)
[5]玄武巖漿起源和演化的一些基本概念以及對(duì)中國(guó)東部中 -新生代基性火山巖成因的新思路(英文)[J]. 牛耀齡. 高校地質(zhì)學(xué)報(bào). 2005(01)
[6]Orogenesis and dynamics of the Qinling Orogen[J]. 張國(guó)偉,孟慶任,于在平,孫勇,周鼎武,郭安林. Science in China,Ser.D. 1996(03)
[7]Continental crust subduction and collision along Shangdan Tectonic Belt of East Qinling, China——Evidence from Pb, Nd and Sr isotopes of granitoids[J]. 張宏飛,張本仁,趙志丹,駱庭川. Science in China,Ser.D. 1996(03)
[8]桐柏—信陽(yáng)古蛇綠巖帶及混雜堆積[J]. 張以熔. 中國(guó)區(qū)域地質(zhì). 1985(03)
本文編號(hào):3411918
【文章來源】:中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院海洋研究所)山東省
【文章頁(yè)數(shù)】:69 頁(yè)
【學(xué)位級(jí)別】:碩士
【部分圖文】:
中國(guó)大陸東部的地質(zhì)簡(jiǎn)圖,顯示侏羅-白堊紀(jì)花崗巖類的分布情況(修改自中國(guó)地質(zhì)調(diào)查數(shù)據(jù)1:1,000,000地質(zhì)圖,2005)
第 2 章 區(qū)域地質(zhì)背景13圖2.1 代表性花崗巖類樣品的鏡下照片((a) 樣品 XX14-01, (b) 樣品 WY14-07, (c) 樣品TTZ14-05,(d) 樣品 CS14-01)。礦物縮寫:Pl-斜長(zhǎng)石,Qz-石英,Bt-黑云母,Kfs-鉀長(zhǎng)石,Amp-角閃石。Fig 2.1 Photomicrographs showing mineral assemblage of representative granitoids ((a) sampleXX14-01
??迥諢ǜ諮依嗟某梢蚴槍盤?窖蟀蹇楦┏逶碩?慕峁?20圖4.2 全堿(Na2O+K2O)與SiO2(TAS)相關(guān)圖表明本文所研究巖體的組成變化。在TAS圖上,這些巖體主要是花崗質(zhì)的。Fig 4.2 Total alkalis (Na2O + K2O) versus SiO2(TAS) diagramshowing the compositional variationof the plutons we study. They are mainly granitic in compositions.
【參考文獻(xiàn)】:
期刊論文
[1]Destruction of the North China Craton[J]. ZHU RiXiang 1,XU YiGang 2,ZHU Guang 3,ZHANG HongFu 1,XIA QunKe 4 & ZHENG TianYu 1 1 State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;2 State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;3 School of Resource and Environmental Engineering,Hefei University of Technology,Hefei 230009,China;4 School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China. Science China(Earth Sciences). 2012(10)
[2]Some basic concepts and problems on the petrogenesis of intra-plate ocean island basalts[J]. NIU Yaoling1,2,3 1 Department of Earth Sciences, Durham University, Durham DH1 3LE, UK; 2 School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China; 3 School of Earth and Space Sciences, Peking University, Beijing 100871, China. Chinese Science Bulletin. 2009(22)
[3]東北地區(qū)淺成低溫?zé)嵋旱V床的地質(zhì)特征和構(gòu)造背景[J]. 祁進(jìn)平,陳衍景,Franco Pirajno. 礦物巖石. 2005(02)
[4]論華南地區(qū)中生代3次大規(guī)模成礦作用[J]. 華仁民,陳培榮,張文蘭,陸建軍. 礦床地質(zhì). 2005(02)
[5]玄武巖漿起源和演化的一些基本概念以及對(duì)中國(guó)東部中 -新生代基性火山巖成因的新思路(英文)[J]. 牛耀齡. 高校地質(zhì)學(xué)報(bào). 2005(01)
[6]Orogenesis and dynamics of the Qinling Orogen[J]. 張國(guó)偉,孟慶任,于在平,孫勇,周鼎武,郭安林. Science in China,Ser.D. 1996(03)
[7]Continental crust subduction and collision along Shangdan Tectonic Belt of East Qinling, China——Evidence from Pb, Nd and Sr isotopes of granitoids[J]. 張宏飛,張本仁,趙志丹,駱庭川. Science in China,Ser.D. 1996(03)
[8]桐柏—信陽(yáng)古蛇綠巖帶及混雜堆積[J]. 張以熔. 中國(guó)區(qū)域地質(zhì). 1985(03)
本文編號(hào):3411918
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