Neolithic climatic instances from North and Central Sudan: the case of R12 and al Khiday populations

This work brings together data from the isotopic analyses of two Neolithic sites in Sudan, R12 (Dongola region) and 16-D-4 (al-Khiday, central Sudan) already published separately except for some new data for the 16- D-4 site. Although the two sites belong to the same archaeological period, isotopic differences are evident. During this period contacts between Northern and Central Sudan are well documented by the pottery production. In this study we bring a further contribution to the knowledge of (1) the process of neolithisation along the Nile Valley, in particular in Nubia and Central Sudan, (2) the contacts between the populations of the two region, (3) the different dietary habits related, possibly, to different environmental conditions.