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Water Contents and Lithium Isotope Compositions of Themesozoic-Cenozoic Lithospheric Mantle of the Eastern NCC:Constraints from Peridotite Xenoliths

Acknowledgements第4-5页
Abstract第5-7页
摘要第8-13页
1 Introduction第13-23页
    1.1 Background and motivation第13-21页
    1.2 Thesis outline第21-23页
2 Geological background and previous works第23-47页
    2.1 The North China Craton第25-28页
    2.2 Lithospheric thinning and the destruction of the NCC第28-31页
    2.3 The Dabie-Sulu UHP Belt第31-32页
    2.4 Localities and samples第32-47页
        2.4.1 Qixia第34-36页
        2.4.2 Penglai第36-37页
        2.4.3 Changle第37-38页
        2.4.4 Hebi第38-39页
        2.4.5 Qingdao第39-41页
        2.4.6 Daxizhuang第41-43页
        2.4.7 Junan第43-47页
3 Analytical methods第47-68页
    3.1 Electron microprobe(EMP)第47-48页
    3.2 LA-ICP-MS第48-49页
    3.3 Fourier transform infrared spectroscopy(FTIR)第49-63页
        3.3.1 Water content in NAMs measured by FTIR第49-53页
        3.3.2 The theoretical background for quantitative analysis第53-63页
    3.4 Secondary ion mass spectrometry(SIMS)第63-68页
4 Results第68-118页
    4.1 EMP results第68-79页
        4.1.1 Major elements concentrations第68-77页
        4.1.2 Temperature and Pressure estimates第77-79页
    4.2 LA-ICP-MS results for Trace element第79-92页
    4.3 FTIR results第92-104页
        4.3.1 H-related species in mineral structural第92-93页
        4.3.2 Hydrogenrelated species in pyroxene minerals第93-99页
        4.3.3 Water contents in minerals of peridotite第99-101页
        4.3.4 Water contents in bulk peirdotite第101-104页
    4.5 SIMS results for Lithium contents and isotopic compositions第104-118页
        4.5.1 PengLai samples第104-109页
        4.5.2 Qixia samples第109-112页
        4.5.3 Hebi samples第112-116页
        4.5.4 Junan samples第116-118页
5 The melt depletion and enrichment process第118-127页
    5.1 Melt depletion第118-124页
        5.1.1 Melt depletion in the mantle sources第118-120页
        5.1.2 The estimate of extents of mantle melting第120-124页
    5.2 The fluids/melts enrichments第124-127页
6 Water in the lithospheric mantle第127-149页
    6.1 Preservation of initial water content of mantle pyroxenes第127-131页
    6.2 Possible factors controlling water contents of pyroxenes第131-135页
    6.3 Low water content of peridotites hosted by Cenozoic basalts第135-145页
        6.3.1 Comparison with the continental craton and off-craton lithospheric mantle第136-139页
        6.3.2 Comparison with the oceanic mantle第139页
        6.3.3 Possible Role of Redox State on Water Content第139-144页
        6.3.4 Implications of the Low Water Content第144-145页
    6.4 High water contents in the Mesozoic lithospheric mantle第145-149页
7 Lithum isotopic systematics of the lithospheric mantle第149-197页
    7.1 Lithium infiltration and disequilibria in peridotites第149-155页
    7.2 The Li enrichments and mantle metasomatism第155-159页
    7.3 Lithium isotopic fractionation in peridotites第159-180页
        7.3.1 The isotopic fractionation at high temperature第159-160页
        7.3.2 The diffusion-driven isotopic fractionation第160-164页
        7.3.3 The quantitative simulation of Li diffusion第164-180页
    7.4 The Li-rich influx with anomalous isotopic compositions第180-185页
        7.4.1 The low δ~7Li influx第180-182页
        7.4.2 The recent high δ~7Li influx第182-185页
    7.5 The anomalous Li isotopic domains in the mantle and their origins第185-193页
        7.5.1. The heavy Li domains in the mantle第185-189页
        7.5.2. The light Li domains in the mantle第189-193页
    7.6 The melt-rock interactions beneath the NCC第193-197页
        7.6.1 The melt-rock interactions and the re-fertilization第193-194页
        7.6.2 The Li enrichments and the water depletion第194-197页
8 Conclusions第197-200页
References第200-222页
Related publications and manuscripts第222-223页
Appendix第223-241页

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