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  • Lake Besaka, as a groundwater-fed lake which appears to have overflowed eastwards into the Awash during the late Pleistocene and perhaps again during the earliest Holocene, is not a sensitive indicator of climatic change. Only two major
  • change within the past 30,000 years.
  • 1981
  • , palaeontological and archaeological context at the same period. However the data show no qualitative latitudinal change in vegetation during the last 40,000 years.
  • 1981
  • Olorgesailie. The mineralogy and provenance of the sediments are discussed. The stratigraphic distribution of diatom associations suggest many lake level fluctuations. Alkalinities varied between about 5 and 85 meq/l. Based on alkalinity changes, three main
  • 1981