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
The stratigraphic complexity of the Swartkrans cave deposit can be attributed to effects of superimposed cycles of deposition and erosion inside the cave. Erosional cycles sum to have been associated with high levels of standing water in the caverns