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Further Late Quaternary leaf fossils from Lake Bosumtwi, Ghana in Palaeoecology of Africa and the surrounding islands-Vol 13.

was of Dry Semi-deciduous type, similar to the present-day forest of this area. The early Holocene forest may, however, have been more open than its modern counterpart. It is suggested that the relative openness of this forest may have been maintained

A possible interpretation of paleoclimatic reconstructions for 18000 BP for the region 60 N to 60 S, 60 W to 100 E in Palaeoecology of Africa and the surrounding islands-Vol 13.

and the present may be accounted for if wind speeds were higher at 18000 BP. An independent meteorological argument suggests that winds may have been stronger by about 24 % in the Northern Hemisphere in winter and by about 124 % in summer.

Spatial management of hominid groups at Olduvai: a preliminary exercise in Palaeoecology of Africa and the surrounding islands. Volume 14.

, merely tentative interpretations may be advanced. It would appear that proximity of fresh water and food resources weighed more in the decision-making process than that of raw materials.

Twentieth century fluctuations in lake level in the Ziway-Shala basin, Ethiopia in Palaeoecology of Africa and the surrounding islands. Volume 14.

Bas niveaux lacustres en 1926, 1933, 1956, 1967 et 1978| hauts niveaux en 1938 et 1970-72. Les maxima et minima observés sont en étroite relation avec les variations pluviométriques d'Addis Abeba, mais ne présentent aucune corrélation avec les

Etude palynologique des sédiments quaternaires du lac Abiyata (Ethiopie) in Palaeoecology of Africa and the surrounding islands. Volume 14.

covers the time span of approximately 40 000 to 6 000 years BP. The pollen spectra give indications of semi-arid and more humid periods while colder intervals may have occurred. The results are correlated with changes in lake levels.

Late Pleistocene and Holocene lake level fluctuations in the Lake Bogoria bassin, northern Kenya Rift Valley in Palaeoecology of Africa and the surrounding islands-Vol 13.

to a marked rise in lake level. The lake waters were considerably fresher than today allowing expansion of both fauna and flora, and may periodically have overflowed northwards into the Baringo sub-basin. Further fluctuations occured throughout the Holocene

A note on the dorbanks (duripans) of South Africa in Palaeoecology of Africa and the surrounding islands. Volume 15. Southern African Society for Quaternary research. Proceedings.

of dorbanks. A typical profile has reddish brown, non-calcareous, structureless A and B horizons, underlain by the dorbank, followed directly either by rock or unconsolidated material which may contain calcium carbonate, gypsum, or both. Soils with dorbank

Lithostratigraphy of Cenozoic sediments between Cape Town and Eland's Bay in Palaeoecology of Africa and the surrounding islands. Volume 15. Southern African Society for Quaternary research. Proceedings.

the Varswater Formation with its well-known vertebrate fossil assemblage and phosphorite sand. The formation is well developed at Elandsfontyn at elevations up to 89,4 m. The Pleistocene Bredasdorp Formation may be represented by three phases of dune-building

Late Cenozoic stratigraphy of the Karonga area in the Malawi Rift in Palaeoecology of Africa and the surrounding islands. Volume 15. Southern African Society for Quaternary research. Proceedings.

nearer to the modern lake. A large pyroclastic flow swept into northern Malawi from the Rungwe area just over 11 000 300 yr BP. An ash layer in the sediments flooring Lake Tanganyika, dated at 11 690 300 yr BP, may be the air-fall equivalent of the same