ABSTRACT
An environmental isotope and noble gas study of groundwater was carried out in the provinces Northern Darfur and Northern Kordofan of Sudan, which belong to the Sahel, the climatically highly sensitive transition zone between the Tropical Rain Forest and the Sahara. This chapter presents the isotope data obtained from the groundwater study and the temperature data derived from the dissolved noble gases together with some information about the type of sampled wells, their subsoil water level and their screen depth and length. Some groundwater samples from the Darfur area have been analyzed for tritium using the highly sensitive 3He mass-spectrometry technique. Considerably smaller recharge rates can be derived from the 14C-data of the groundwater. Conventional groundwater MC-ages derived from these data fall almost into the Holocene time span. Only the deepest 14C-dated wells in Kordofan pump isotopically depleted paleowater from the last glacial period.
