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通过东灰山遗址含文化层沉积物元素地球化学分析,结合高精度AMS^14C测年和考古资料,重建河西走廊地区3700~3400calBP期间人类活动特征.铜(Cu)、锌(zn)、铅(Pb)、锶(Sr)和铷(Rb)元素以及Rb/Sr比值显示,东灰山地区3710~3690calBP间人类活动强度不大,农业和青铜铸造活动主要出现在3690~3500calBP时段,3500calBP以后人类活动强度减弱.Rb/Sr比值可作为早期人类活动替代指标,与人类活动强度呈反相关关系. “,”Human activity characteristics in Hexi Corridor during 3700 -3400 cal BP were reconstructed by element geochemistry analysis from cultural remains at Donghuishan site, together with the high-precision AMS ^14C dating and archaeology materials. The abundance of elements, such as Cu, Zn, Pb, Sr and Rb, along with the results of Rb/Sr ratio showed that human activity intensity was not very strong during 3710 -3690 eal BP in Donghuishan area; agriculture and bronze casting activities appeared during 3690 - 3500 cal BP; human activity intensity became weak after 3500 eal BP. Rb/Sr ratio can be used as substitute index of early human activity and has inverse correlation relationship with human activity intensity.