Abstract
• Strontium isotope ratios of Lake Turkana reflect the runoff balance of various rivers.
• Strontium isotopes document large changes in water source areas over the last 14 kyrs.
• Relative contribution of the SW rivers was enhanced during the African Humid Period.
• Lake level declined abruptly, while the rainfall locus moved gradually northwards.
• Rainfall changes appear controlled by E-W adjustments in atmospheric circulation.
| Original language | English |
|---|---|
| Pages (from-to) | 1-12 |
| Number of pages | 12 |
| Journal | Quaternary Science Reviews |
| Volume | 174 |
| Early online date | 23 Aug 2017 |
| DOIs | |
| Publication status | Published - 15 Oct 2017 |
Funding
We gratefully acknowledge the Government of Kenya and the National Museums of Kenya for facilitating our research in the Koobi Fora, Ileret and West Turkana regions. This study was supported by the Netherlands Organisation for Scientific Research (NWO; grant no. 824.01.005 ) and the Leakey Foundation (grants to CSF in 2009 and to JCAJ in 2012). We thank the Turkana Basin Institute (TBI; notably Louise Leakey and Meave Leakey) for logistical support and collaboration in the field. We are grateful to Thure Cerling for kindly providing unpublished data, and to Dirk van Damme for making shell material available for analysis. Mathijs van de Ven and Janne Koornneef provided analytical assistance at the VU University Amsterdam. The constructive comments of two anonymous reviewers further improved the previous version of this manuscript.
| Funders | Funder number |
|---|---|
| CS Fund | |
| Fetzer Institute | |
| Shell | |
| Leakey Foundation | |
| City West Water | |
| Government of Canada | |
| Museums Association | |
| Vrije Universiteit Amsterdam | |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | 824.01.005 |