人民黄河Issue(8)：15-17,20,4.DOI:10.3969/j.issn.1000-1379.2014.08.005
陇东白垩系自流水盆地演化的水文地质意义
Evolution of the Longdong Cretaceous Artesian Basin Hydrological Geological Significance
摘要
Abstract
Longdong basin,formed in the Cretaceous is located in the southwest of Erdos basin. Controlled by the tectonic evolution,it evolves from a native closed basin to an open artesian basin at present. It can be divided into Quaternary aquifer system and Cretaceous aquifer system by the characteristics of temporal and spatial distribution of aquifer. According to the characteristics of water bearing media,in the plane of Longdong basin groundwater can be divided into three types of Cretaceous clastic rock fissure water,loess pore fissure water and Kotani Matsu rock pore wa-ter. In the vertical direction,the different water bearing formations of valley loess aquifer system and Cretaceous aquifer system are in space super-imposition,of which,the unconfined water of loess tableland and valley and Cretaceous deep confined water are water subsystems with water supply significance. The unconfined water of loess tableland is an independent aqueous system and the Cretaceous deep confined water-unconfined water and valley unconfined water formed the circulatory system of river-basin. The runoff of deep confined water basin is slow,so the existence of deep fresh water resources is very valuable and may belong to non renewable.关键词
地下水/潜水/承压水/白垩系/含水系统/陇东盆地Key words
groundwater/unconfined water/confined water/cretaceous/water system/Longdong basin分类
建筑与水利引用本文复制引用
郭富,黎志恒,刘心彪,孟兴民..陇东白垩系自流水盆地演化的水文地质意义[J].人民黄河,2014,(8):15-17,20,4.基金项目
中国地质调查局地质调查项目（1212010813099）。 （）
