Lacustrine sediments can be used to study the palaeoenvironmental evolution of a particularrncatchment. This is because they reflect developments in the Lake Ecosystem andrnproductivity as weU as changes in the rate and type of processes of the catchment such asrnweathering, erosion and sediment transport. Moreover, they are often deposited inrnundisturbed sedimentary environments and give time-integrated infonnauon on thernevolution of the basin and its surroundings.rnThe aim of the present work is to contribute to the understanding of the Holocene evol utionrnof climate variability and environmental changes due to both climatic and human causes inrnNorthern Ethiopia from the sediments of lake cores and shorel ines as well as from sectionsrncollected in and around Lake Ashange in the year 2003 under the Lake Tana project.rnThe studied core is dominantly organic and measures 8.1 m and is recovered under 9m ofrnwater depth. The basal radiocarbon age shows a date of 11 ,920 Â± 40 years BP. Morernradiocarbon dates, from samples corresponding to important shifts in the studied proxies, arernunder analysis. Because of this, linear extrapolation of age versus sediment depth has beenrnapplied in this study by considering the top of the core as modem.rnSediments were also analyzed for lithology. magnetic susceptibil ity, X-ray diffractionrn[(XRD) Mineralogy] and X-ray fluorescence [(XRF) (Elemenllil analysis)]. Moreover waterrnsamples were collected for chemical analysis and secondary information was also gatheredrnfrom hydrometeorological data as well as from aerial photographs of 1965, 1980 and 1986.rnThe integrated analyses gave the first evidences of continuous and high resolution climaticrnand environmental changes for the late Pleistocene and Holocene of Northern Ethiopia. Therncore was subdivided into four zones corresponding to important changes relative to thernstudied parameters.