oa Botswana Notes & Records - A late Pleistocene palaeoenvironmental record from Lobatse II Cave

Volume 31 Number 1
  • ISSN : 0525-5090



The Lobatse Caves of south-east Botswana represent an excellent potential of palaeoclimatic data in a region which has few suitable palaeoenvironmental sites. Here we summarise the results of a study on stalagmite LH4 from the Lobatse II Cave, using stable carbon and oxygen isotope analysis and uranium-series dating. The record indicates a gradual decrease in temperature from 50,000 yr B.P. towards the Last Glacial Maximum at 21,000 yr B.P. Episodes of increased precipitation occurred at 49,000, 47,000, 27,000, 25,000 and 23,500 yr B.P. The stable carbon isotope record suggests that a significant proportion ofthe increase was of winter rainfall.

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