Geochemistry of surface sediments from the continental shelf of the East China Sea and small rivers of SE China: Constraints on chemical weathering and provenance

沉积物元素地球化学特征可为沉积环境演化历史提供重要信息，包括沉积物物源、物源成分特征、物源区岩石风化侵蚀程度、成岩作用、沉积物传输、沉积过程及古气候变化等。本研究于东海大陆架，瓯江、闽江和晋江河口共采集79个表层沉积物样品，分析其常微量元素地球化学特征并探讨物源区性质及化学风化特征。UCC和UC-YC标准化蛛网图表明，CaO、Na2O、Ba和Sr呈现出不同程度的亏损，而Rb元素则轻微富集。硅酸盐风化指数(CIA、PIA和CIW)及三角形图(A-CN-K、(A-K)-C-N和A-CNK-FM)表明东海陆架沉积物物源区经历了低-中等的化学风化作用。与东海相比，瓯江、闽江和晋江河口沉积物的风化指数波...Major and trace elemental geochemistry of sediments can provide information central to interpreting the sedimentary history, including chemical weathering conditions, the nature and composition of provenance, sediment transport processes, diagenetic changes and paleoclimate. In this study, seventy-nine surface sediments collected from the continental shelf of the East China Sea (ECS) and the estua...学位：理学硕士院系专业：海洋与地球学院_海洋化学学号：2232012115130