论文部分内容阅读
通过云贵高原深水湖泊沉积物-水界面铁-锰循环研究，揭示了湖泊铁-锰循环不仅受氧化还原边界层化学界面的控制，而且受沉积物-水地质界面的制约；有机质生物氧化和流酸盐还原构成界面铁-锰循环的重要机制并产生亚扩散层屏蔽效应；铁-锰循环伴随有微量金属元素地球化学形态的改变，从而影响其迁移行为；气候剧烈变化所中断的铁-锰循环，形成铁-锰富集层的古环境记录。
Through the study of the sediment-water interface iron-manganese cycle in the deepwater lava of Yunnan-Guizhou Plateau, it is revealed that the iron-manganese cycle in the lake is not only controlled by the chemical interface of the redox boundary layer, but also controlled by the sediment-water geological interface; the biooxidation and flow of organic matter The important mechanism of acid-salt reduction in the formation of interfacial iron-manganese cycle and the formation of sub-diffusion layer shielding effect; iron-manganese cycle with trace elements changes in geochemical morphology, thus affecting the migration behavior; severely affected climate change interrupted by the iron-manganese Circulation, the formation of iron - manganese enrichment of paleoenvironmental records.