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100 _aBeck, Catherine C
_951865
245 _aOnset of the African Humid Period by 13.9 kyr BP at Kabua Gorge, Turkana Basin, Kenya/
260 _bSage,
_c2019.
300 _aVol 29, issue 6, 2019 : (1011-1019 p.).
520 _aThe shift toward wetter climatic conditions during the African Humid Period (AHP) transformed previously marginal habitats into environments conducive to human exploitation. The Turkana Basin provides critical evidence for a dynamic climate throughout the AHP (~15–5 kyr BP), as Lake Turkana rose ~100 m multiple times to overflow through an outlet to the Nile drainage system. New data from West Turkana outcrops of the late-Pleistocene to early-Holocene Galana Boi Formation complement and extend previously established lake-level curves. Three lacustrine highstand sequences, characterized by laminated silty clays with ostracods and molluscs, were identified and dated using AMS radiocarbon on molluscs and charcoal. This study records the earliest evidence from the Turkana Basin for the onset of AHP by at least 13.9 kyr BP. In addition, a depositional hiatus corresponds to the Younger Dryas (YD), reflecting the Turkana Basin’s response to global climatic forcing. The record from Kabua Gorge holds additional significance as it characterized the time period leading up to Holocene climatic stability. This study contributes to the paleoclimatic context of the AHP and YD during which significant human adaptation and cultural change occurred.
650 _aAfrican humid period,
_951866
650 _aGalana Boi,
_951867
650 _aostracods,
_951615
650 _a paleoclimate,
_951378
650 _apaleoenvironment,
_951321
650 _aTurkana
_951868
700 _aFeibel, Craig S
_951869
700 _aWright, James D
_951870
700 _aMortlock, Richard A
_951871
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683619831415
942 _2ddc
_cART
999 _c12825
_d12825