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沉积矿物学是进行环境分析的重要手段之一 ,对矿物在表生环境下的物理、化学行为的研究是正确理解和获取一些重要的替代性环境指标的基础 ,它可为认识近代地质过程、地表气候过程和海洋环境过程提供定性和定量依据。 2 0世纪 90年代以来 ,海洋矿物学注重于以沉积矿物为指示 ,研究气候、物质来源、扩散路径和运移方向以及沉积环境等相关内容 ,并与地球化学相结合 ,解释区域性环境变化 ,乃至全球性环境演变等问题 ,取得了重要进展。对我国这一领域的研究现状作一综述 ,提出了 5项环境示踪的沉积矿物学指标 ,即 :用矿物组合、重矿物含量、磁铁矿、角闪石、长石等矿物示踪物源和物流 ;用矿物组合、高岭石、伊利石、方解石等指示古气候 ;用重矿物含量、石英特征等反映水动力条件 ;用海绿石、自生黄铁矿、铁锰氧化物等揭示氧化 -还原环境 ;用火山玻璃、玄武闪石、蒙脱石等示踪火山和热液活动。但应用沉积矿物学示踪环境 ,必须运用多种指标进行综合分析
Sedimentary mineralogy is one of the most important tools for environmental analysis. The study of the physical and chemical behavior of minerals under epigenetic environment is the basis for correctly understanding and obtaining some important alternative environmental indicators. It can be used to understand modern geological processes, Surface and climatic processes and marine environmental processes provide a qualitative and quantitative basis. Since the 1990s, marine mineralogy has focused on sedimentary minerals as an indicator to study the relevant aspects of climate, material sources, diffusion paths and migration directions and sedimentary environment, and combined with geochemistry to explain regional environmental changes, And even the global environmental evolution and other issues, made important progress. Summarized the current research status of our country in this area, we put forward five sedimentary mineralogical indicators of environmental tracing, that is, mineralogical composition, heavy mineral content, magnetite, amphibole, feldspar and other mineral tracers Source and logistics; Indicating paleoclimate with mineral assemblage, kaolinite, illite, calcite and so on; Hydrodynamic conditions are reflected by heavy mineral content and quartz features; Revealed by pyrochlore, authigenic pyrite, FeMnO etc. Oxidation - reduction environment; with volcanic glass, basalt, montmorillonite tracer volcano and hydrothermal activity. However, the application of sedimentary mineralogical tracing environment, we must use a variety of indicators for a comprehensive analysis