摘要
As part of the European contribution to the international initiative“EARTHTIME”(http://earthtime-eu.eu/earthtime/)the Geochronology Group at the Research Center for Human Evolution(CENIEH,Burgos,Spain;Drs.Lee Arnold,Mathieu Duval,Dirk Hoffmann and Josep M.Parés),hosted a scientific meeting in September 2013 titled:“The Early-Middle Pleistocene transition:Significance of the Jaramillo Subchron in the sedimentary record”.