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土耳其卡桑特以及中国西藏雅鲁藏布江缝合带西段北亚带蛇绿岩及铬铁矿成因研究

作者简历第6-8页
摘要第8-16页
Abstract第16-19页
Chapter 1 Introduction第30-64页
    1.1 Topic selection第30-31页
    1.2 Research background第31-60页
        1.2.1 Ophiolite第31-44页
        1.2.2 Chromitite第44-52页
        1.2.3 Unusual minerals in ophiolitic peridotites and chromitites第52-60页
    1.3 Research purpose and significance第60页
    1.4 Technical route and workload of research第60-64页
        1.4.1 Sampling and field observation第60-61页
        1.4.2 Thin-section observation and mineral chemistry analyses第61页
        1.4.3 Whole-rock geochemistry第61页
        1.4.4 Unusual mineral separation and identification第61-64页
Chapter 2 Geological background第64-80页
    2.1 Geology of Turkey第64-71页
        2.1.1 The Pontides第66-68页
        2.1.2 The Kirsehir Massif第68-69页
        2.1.3 The Anatolide-Tauride Block第69-70页
        2.1.4 The Arabian Platform第70-71页
    2.2 Geology of the Tauride belt第71-73页
    2.3 Geology of the Pozanti-Karsanti ophiolite第73-78页
        2.3.1 The Aladag Mélange第74-75页
        2.3.2 The metamorphic sole第75-76页
        2.3.3 The Pozanti-Karsanti ophiolite第76-77页
        2.3.4 Mafic dikes第77-78页
    2.4 Geology of the Yarlung Zangbo Suture Zone第78-80页
Chapter 3 Sampling and analytical methods第80-90页
    3.1 Mineral chemistry analyses by electron microprobe (EMP)第80页
    3.2 Whole-rock major, trace and platinum-group elements (PGEs) analyses第80-81页
    3.3 Whole-rock major and trace elements analyses for the PK mafic dikes第81-82页
    3.4 Sr-Nd isotope analyses for the PK mafic dikes第82页
    3.5 Zircon U-Pb dating by LA-ICP-MS第82-83页
    3.6 Mineral separation for the PK chromitite第83页
    3.7 SEM, BSE, and CL imaging第83-84页
    3.8 In situ isotopic analyses by SIMS第84-88页
        3.8.1 Carbon and Nitrogen isotopic analyses for diamond第84-85页
        3.8.2 U-Pb age dating and oxygen isotopic analyses for zircon and mineral inclusion identification第85-87页
        3.8.3 Carbon isotope analyses for Si C第87-88页
    3.9 TEM analyses for the PK diamonds第88-90页
Chapter 4 Origin of peridotite and chromitite in the Pozanti-Karsanti ophiolite第90-128页
    4.1 Introduction第90-92页
    4.2 Sample description第92-95页
        4.2.1 Harzburgite and dunite第92-94页
        4.2.2 Chromitites第94-95页
    4.3 Analytical results第95-103页
        4.3.1 Mineral Chemistry第95-100页
        4.3.2 Whole-rock geochemistry第100-103页
    4.4 Discussion第103-116页
        4.4.1 Partial melting and melt-rock reaction第104-107页
        4.4.2 PGEs constraints on the formation of PK peridotites第107-111页
        4.4.3 Origin of the PK chromitites第111-114页
        4.4.4 Implications for the evolution of the PKO第114-116页
    4.5 Summary第116-128页
Chapter 5 Mafic dikes intruding the PK peridotites第128-151页
    5.1 Introduction第128-129页
    5.2 Sample description第129-130页
    5.3 Analytical results第130-137页
        5.3.1 Major and trace elements第130-134页
        5.3.2 Zircon U-Pb ages第134-136页
        5.3.3 Sr-Nd isotopes第136-137页
    5.4 Discussion第137-145页
        5.4.1 Petrogenesis of the Pozanti-Karsanti mafic dikes第137-142页
        5.4.2 Tectonic evolution of the Pozanti-Karsanti ophiolite第142-145页
        5.4.3 Age of intra-oceanic subduction第145页
    5.5 Summary第145-151页
Chapter 6 Unusual minerals recovered in the PK chromitite第151-160页
    6.1 Introduction第151-152页
    6.2 Analytical results第152-156页
        6.2.1 Unusual minerals recovered from the podiform chromitites第152-156页
    6.3 Discussion第156-158页
        6.3.1 Discovery of unusual minerals in PKO and its significance第156-158页
    6.4 Summary第158-160页
Chapter 7 Origin of the PK diamond第160-191页
    7.1 Introduction第160-161页
    7.2 Sample description第161-162页
    7.3 Analytical results第162-166页
        7.3.1 BSE and CL imaging第162-163页
        7.3.2 Carbon isotopic composition第163-164页
        7.3.3 Nitrogen content and isotopic composition第164-165页
        7.3.4 Nano-inclusions in diamonds第165-166页
    7.4 Discussion第166-177页
        7.4.1 Fractionation of C and N isotopes and N concentrations第166-170页
        7.4.2 Interpretation of Carbon and Nitrogen compositions of the PK diamonds第170-173页
        7.4.3 Implications from the mineral inclusions in the PK diamonds第173-175页
        7.4.4 Origin of the Pozanti-Karsanti diamonds第175-177页
    7.5 Summary第177-191页
Chapter 8 Zircons in the PK chromitites第191-217页
    8.1 Introduction第191-192页
    8.2 Analytical Results第192-202页
        8.2.1 Morphology and internal structure of zircon grains第192-193页
        8.2.2 Zircon U-Pb geochronology and Th/U composition第193-200页
        8.2.3 Oxygen isotopic composition of the PK zircons第200-202页
    8.3 Discussion第202-208页
        8.3.1 Pb-loss and oxygen exchange in zircon第202-204页
        8.3.2 Formation age of the Pozanti-Karsanti chromitites第204-205页
        8.3.3 Origin of zircons in PKO第205-208页
    8.4 Summary第208-217页
Chapter 9 Si C recovered from the PK chromitites第217-236页
    9.1 Introduction第217-218页
    9.2 Analytical Results第218-221页
        9.2.1 Polytype and inclusion identification for the Si C第218-219页
        9.2.2 SEI, BSE and CL imaging of Si C第219-220页
        9.2.3 Carbon isotopic composition第220-221页
    9.3 Discussion第221-228页
        9.3.1 Discoveries of Si C and their structural and geochemical characteristics第221-224页
        9.3.2 Formation conditions of Si C (temperature, pressure and oxygen fugacity)第224-225页
        9.3.3 Origin of Si C in the Pozanti-Karsanti podiform chromitites第225-228页
    9.4 Summary第228-236页
Chapter 10 Origin of peridotites from the Northern Sub-belt ophiolite, Tibet第236-275页
    10.1 Introduction第236-237页
    10.2 Sample description第237-240页
        10.2.1 Harzburgites第237-238页
        10.2.2 Dunites第238-240页
    10.3 Analytical results第240-260页
        10.3.1 Mineral Chemistry第240-253页
        10.3.2 Whole-rock geochemistry第253-260页
    10.4 Discussion第260-273页
        10.4.1 Effect of Serpentinization第260-262页
        10.4.2 Partial melting第262-264页
        10.4.3 Fractionation of the PGE第264-266页
        10.4.4 Tectonic setting and mantle metasomatism第266-271页
        10.4.5 Geodynamic evolution of the western segment of Yarlung Zangbo ophiolitic sub-belt第271-273页
    10.5 Summary第273-275页
Chapter 11 Conclusions第275-280页
致谢第280-282页
参考文献第282-323页

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