Fig. 10From: Copper alloy production in the Warring States period (475-221 BCE) of the Shu state: a metallurgical study on copper alloy objects of the Baishoulu cemetery in Chengdu, China(Data sources: 1. Data of Hubei lead sources and Sichuan lead sources [50])Comparison of the lead isotope ratios (208Pb/204Pb versus 206Pb/204Pb) between Baishoulu, Sanxingdui, and ore sources in Sichuan and Hubei. Back to article page