Environmental change during MIS4 and MIS 3 opened corridors in the Horn of Africa for Homo sapiens expansion

Finn Viehberg, Janna Just, Jonathan R. Dean, Bernd Wagner, Sven Oliver Franz, Nicole Klasen, Thomas Kleinen, Patrick Ludwig, Asfawossen Asrat, Henry Lamb, Melanie J. Leng, Janet Rethemeyer, Antoni E. Milodowski, Martin Claussen, Frank Schäbitz

Research output: Contribution to journalArticlepeer-review

19 Citations (SciVal)
139 Downloads (Pure)

Abstract

Archaeological findings, numerical human dispersal models and genome analyses suggest several time windows in the past 200 kyr (thousands of years ago) when anatomically modern humans (AMH) dispersed out of Africa into the Levant and/or Arabia. From close to the key hominin site of Omo-Kibish, we provide near continuous proxy evidence for environmental changes in lake sediment cores from the Chew Bahir basin, south Ethiopia. The data show highly variable hydroclimate conditions from 116 to 66 kyr BP with rapid shifts from very wet to extreme aridity. The wet phases coincide with the timing of the North African Humid Periods during MIS5, as defined by Nile discharge records from the eastern Mediterranean. The subsequent record at Chew Bahir suggests stable regional hydrological setting between 58 and 32 kyr (MIS4 and 3), which facilitated the development of more habitable ecosystems, albeit in generally dry climatic conditions. This shift, from more to less variable hydroclimate, may help account for the timing of later dispersal events of AMH out of Africa
Original languageEnglish
Pages (from-to)139-153
Number of pages15
JournalQuaternary Science Reviews
Volume202
Early online date07 Dec 2018
DOIs
Publication statusPublished - 15 Dec 2018

Fingerprint

Dive into the research topics of 'Environmental change during MIS4 and MIS 3 opened corridors in the Horn of Africa for Homo sapiens expansion'. Together they form a unique fingerprint.

Cite this