When did the Anthropocene begin? A mid-twentieth century boundary level is stratigraphically optimal

Zalasiewicz, Jan; Waters, Colin N.; Williams, Mark; Barnosky, Anthony D.; Cearreta, Alejandro; Crutzen, Paul; Ellis, Erle; Ellis, Michael A.; Fairchild, Ian J.; Grinevald, Jacques; Haff, Peter K.; Hajdas, Irka; Leinfelder, Reinhold; McNeill, John; Odada, Eric O.; Poirier, Clément; Richter, Daniel; Steffen, Will; Summerhayes, Colin; Syvitski, James P. M.; Vidas, Davor; Wagreich, Michael; Wing, Scott L.; Wolfe, Alexander P.; An, Zhisheng; Oreskes, Naomi. 2015. When did the Anthropocene begin? A mid-twentieth century boundary level is stratigraphically optimal. Quaternary International 383: 196-203. [Download PDF]