As viewed from the hydrogeochemistry of Cretaceous groundwater in the south of Baiyu mountain of the Ordos basin, the article is focus on the groundwater horizontal distribution and the water chemistry about surface water base-flow.

• 摘要主要从水文地球化学的角度，以鄂尔多斯盆地白于山以南地区白翌系地下水的水化学水平分带和地表水基流水化学特徵为主要依据，结合地质构造格局及岩相古地理条件，分析研究了该区白翌系地下水的补、径、排条件。