西湖含油气凹陷第三系地下水化学及其形成演化模式

CHEMICAL EVOLUTION OF GROUNDWATER IN THE TERTIARY SEDIMENTARY SYSTEM OF THE XIHU OIL-GAS BEARING DEPRESSION

揭示了东海西湖含油气凹陷第三系沉积体系地下水化学的基本特征和空间分布规律，重溯了其在地质历史过程中形成演变的阶段和特点，论证了地下水现代化学主要是遵循浓缩盐化、正向变质作用方向演变形成的，且已演化成熟，并探讨了地下水成因和形成演化模式．

The basic features and the spatial variations of the groundwater chemistry in the Tertiary sedimentary system of Xihu oil_gas bearing depression have been studied. It shows the stages and characters of evolution in the process of geological history and demonstrates the modern evolutionary pattern of hydrochemical characteristics that dominantly follows the concentrated salinization and normal metamorphism, when the evolution was completed. It also probes into the occurrence of groundwater and the model of its formation and evolution.