本論文以Fe同位素為手段,研究大別造山帶進(jìn)變質(zhì)作用過(guò)程中形成的不同變質(zhì)相巖石及榴輝巖中單斜輝石-石榴子石之間的Fe同位素分餾。為了改進(jìn)Fe同位素分析,在利用標(biāo)樣-樣品間插法（SSB）校正MC-ICPMS質(zhì)量歧視的基礎(chǔ)上建立了雙稀釋劑法+SSB法和Ni外標(biāo)法+SSB法。根據(jù)長(zhǎng)期監(jiān)測(cè)的標(biāo)樣數(shù)據(jù),當(dāng)每個(gè)樣品溶液在儀器上測(cè)試四次或九次后,δ56Fe長(zhǎng)期外部精度分別<0.05‰和0.03‰。此外,本文報(bào)道了純Fe溶液標(biāo)樣NIST SRM3126a大批量（N=51）、高精度的Fe同位素測(cè)試結(jié)果,并提出了新的推薦值:δ56Fe =0.363 ± 0.006,2se,95%c.i.;δ57Fe = 0.534 ± 0.009,2se,95%c.i.。大別造山帶綠片巖,角閃巖,榴輝巖三種不同變質(zhì)相變質(zhì)巖的含水量隨變質(zhì)程度上升而逐漸減少,且原巖類似,均為元古代（750-800Ma）揚(yáng)子北緣的基性火山巖。三種巖石的Fe同位素組成基本一致,隨變質(zhì)程度加深,平均值（δ56Fe）分別為 0.081 ± 0.075（2SD,n = 13）,0.091 ± 0.037（2SD,n = 19）,0.071 ± 0... 

【文章頁(yè)數(shù)】：102 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
Abstract
第一章 前言
    1.1 研究現(xiàn)狀和存在問(wèn)題
    1.2 研究?jī)?nèi)容
    1.3 本論文取得的主要認(rèn)識(shí)
    1.4 研究方法及工作量
第二章 Fe同位素分析方法
    2.1 引言
    2.2 實(shí)驗(yàn)
        2.2.1 化學(xué)純化
        2.2.2 質(zhì)譜儀測(cè)試
        2.2.3 儀器質(zhì)量歧視校正
            2.2.3.1 雙稀釋劑方法
            2.2.3.2 Ni外標(biāo)法
        2.2.4 內(nèi)精度
    2.3 結(jié)果與討論
        2.3.1 質(zhì)量歧視短期波動(dòng)的校正
        2.3.2 精度和準(zhǔn)確度
        2.3.3 NIST SRM3126a新推薦值
    2.4 小結(jié)
第三章 大別造山帶區(qū)域地質(zhì)概況
第四章 俯沖帶固相進(jìn)變質(zhì)過(guò)程Fe同位素分餾研究
    4.1 樣品
    4.2 Fe同位素?cái)?shù)據(jù)結(jié)果
        4.2.1 綠片巖Fe同位素組成
        4.2.2 角閃巖Fe同位素組成
        4.2.3 榴輝巖Fe同位素組成
    4.3 討論
        4.3.1 固相進(jìn)變質(zhì)過(guò)程中Fe同位素分餾
        4.3.2 變質(zhì)巖Fe同位素變化的成因
        4.3.3 固相進(jìn)變質(zhì)過(guò)程中的氧化還原反應(yīng)及對(duì)島弧玄武巖高氧逸度的指示
    4.4 小結(jié)
第五章 大別造山帶榴輝礦物對(duì)的Fe同位素分餾研究
    5.1 引言
    5.2 樣品
        5.2.1 毛屋
        5.2.2 雙河
        5.2.3 碧溪嶺
        5.2.4 紅安
    5.3 Fe同位素?cái)?shù)據(jù)結(jié)果
    5.4 討論
        5.4.1 礦物間是否達(dá)到Fe同位素平衡
        5.4.2 影響Fe同位素分餾大小的因素
    5.5 小結(jié)
第六章 結(jié)論
致謝
參考文獻(xiàn)
附錄


【參考文獻(xiàn)】：
期刊論文
[1]地球科學(xué)中鐵同位素研究進(jìn)展[J]. 何永勝,胡東平,朱傳衛(wèi).  地學(xué)前緣. 2015(05)
[2]Mid—Late Neoproterozoic rift-related volcanic rocks in China:Geological records of rifting and break-up of Rodinia[J]. Linqi Xia~*,Zuchun Xia,Xueyi Xu,Xiangmin Li,Zhongping Ma Xi’an Institute of Geology and Mineral Resources,China Geological Survey,Xi’an,Shaanxi 710054,China.  Geoscience Frontiers. 2012(04)
[3]雙稀釋劑法在非傳統(tǒng)穩(wěn)定同位素測(cè)定中的應(yīng)用——以鉬同位素為例[J]. 李津,朱祥坤,唐索寒.  巖礦測(cè)試. 2011(02)
[4]U-Pb dating of detrital zircons from the Wudangshan Group in the South Qinling and its geological significance[J]. LING WenLi1,2, DUAN RuiChun1,3, LIU XiaoMing1,4, CHENG JianPing1, MAO XinWu5, PENG LianHong5, LIU ZaoXue5, YANG HongMei1,3 ＆ REN BangFang1,6 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 Yichang Institute of Geology and Mineral Resources, Yichang 443003, China; 4 State Key Laboratory of Continental Geodynamics, Northwest University, Xi’an 710069, China; 5 Geological Survey of Hubei Province, Wuhan 430022, China; 6 Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China.  Chinese Science Bulletin. 2010(22)
[5]Detachment within subducted continental crust and multi-slice successive exhumation of ultrahigh-pressure metamorphic rocks: Evidence from the Dabie-Sulu orogenic belt[J]. LIU YiCan＆ LI ShuGuang CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China.  Chinese Science Bulletin. 2008(20)
[6]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)



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