Aspects of the Hydrology and Hydrogeology of the Northern Yucatan Peninsula, Mexico

墨西哥尤卡坦半岛北部的水文和水文地质方面

• 批准号: 9304840
• 负责人: Eugene Perry
• 金额: $ 12万
• 依托单位: Northern Illinois University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304840&HistoricalAwards=false
• 关键词: Aspects; Hydrology; Hydrogeology; Northern; Yucatan

This is a proposal to characterize the hydrology, hydrogeology, and geochemistry of the northern Yucatan Peninsula, Mexico. Northern Yucatan is an emergent platform in which karst features are developing in rocks whose mineralogy is strongly dominated by limestone and dolomite. Low content of argillaceous minerals and high permeability insure a rapid throughput of groundwater in the system. Mixing of fresh and salt water result in a significant zone of dispersion between the fresh groundwater lens and the underlying saline intrusion; and this zone of dispersion can significantly affect carbonate diagenesis. Simple stratigraphy and mineralogical composition, accessibility, and lack of human development make the northern Yucatan Peninsula an excellent natural laboratory. The study area will be divided into four distinct zones characterized by strong differences in permeability. Proposed research involves drilling holes (in collaboration with Mexican ion content, environmental isotopes, saturation indices, and Sr content), and making and calibrating electrical resistivity surveys. Interface behavior and its relation to diagenesis and corrosion will be studied. Data will be mapped or contoured and used in numerical simulation of groundwater flow.

这是一个描述墨西哥尤卡坦半岛北部的水文、水文地质和地球化学的建议。北尤卡坦是一个以石灰岩和白云岩为主要矿物学特征的突出台地。低含量的泥质矿物和高渗透性保证了地下水在系统中的快速通过。淡水和盐水的混合导致淡水透镜体与下伏盐水侵入体之间有明显的分散带；该分散带对碳酸盐岩成岩作用具有重要影响。简单的地层和矿物学组成，可达性和人类开发的缺乏使尤卡坦半岛北部成为一个极好的自然实验室。研究区将被划分为四个不同的带，其特征是渗透率差异很大。拟议的研究包括钻孔（与墨西哥离子含量、环境同位素、饱和度指数和Sr含量合作），以及制作和校准电阻率测量。研究界面行为及其与成岩作用和腐蚀的关系。数据将被绘制成地图或等高线，并用于地下水流动的数值模拟。