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Age du fer ; Années 1970 ; Années 1980 ; Archéologie ; Chine ; Chongqing ; Datation C 14 ; Exploitation minière ; Géochimie ; Géochronologie ; Géographie historique ; Production ; Sel ; Site archéologique
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Based on dynastic period division and AMS C 14 dating performed on the sedimentary layers at Zhongba and Yuxi sites, and also the analysis of Na, Ca and Mg of 201 sedimentary samples from Zhongba site and that of Ca and Na in 47 sedimentary samples