FN Archimer Export Format PT J TI Intensifying Weathering and Land Use in Iron Age Central Africa BT AF BAYON, Germain DENNIELOU, Bernard ETOUBLEAU, Joel PONZEVERA, Emmanuel TOUCANNE, Samuel BERMELL, Sylvain AS 1:1;2:1;3:1;4:1;5:1;6:1; FF 1:PDG-REM-GM-LGM;2:PDG-REM-GM-LES;3:PDG-REM-GM-LGM;4:PDG-REM-GM-LGM;5:PDG-REM-GM-LES;6:PDG-REM-GM-CTD; C1 IFREMER, Unite Rech Geosci Marines, F-29280 Plouzane, France. C2 IFREMER, FRANCE SI BREST SE PDG-REM-GM-LGM PDG-REM-GM-LES PDG-REM-GM-CTD IN WOS Ifremer jusqu'en 2018 IF 31.03 TC 131 UR https://archimer.ifremer.fr/doc/00069/18031/15574.pdf LA English DT Article AB About 3000 years ago, a major vegetation change occurred in Central Africa, when rainforest trees were abruptly replaced by savannas. The consensus is that the forest disturbance was caused by climate change. We show here that chemical weathering in Central Africa, reconstructed from geochemical analyses of a marine sediment core, intensified abruptly at the same period, departing significantly from the long-term weathering fluctuations related to the Late Quaternary climate. Evidence that this weathering event was also contemporaneous with the migration of Bantu-speaking farmers across Central Africa suggests that human land-use intensification at that time already had a significant impact on the rainforest. PY 2012 PD MAR SO Science SN 0036-8075 PU Amer Assoc Advancement Science VL 335 IS 6073 UT 000301225100043 BP 1219 EP 1222 DI 10.1126/science.1215400 ID 18031 ER EF