浙江仙居岩画的微腐蚀断代

Microerosion Dating of Xianju petroglyphs,Zhejiang

微腐蚀测年通过观测矿物晶体上的"石亏"来获知岩画的制作年代,是一种无损的"直接断代法"。仙居岩画的测年工作主要在送龙山和小方岩两处地点开展,经过观测,研究人员从岩画刻槽中取得了十一组石亏微腐蚀数据,以及两组来自吴芾墓附属石刻的校准数据。由校准后的年代计算结果可知,小方岩岩画的制作开始于东吴末年,贯穿了两晋及南北朝时期,一直延续至唐初,而送龙山岩画则为唐代作品。

Microerosion dating is a non-intrusive ＇ direct dating method＇ which measures the widths of the ‘ wane＇ on fracture crystal. The work to date Xianju petroglyphs, Zhejiang Province was carried out at two main sites： Songlongshan and Xiaofangyan. Analysts have managed to secure two calibration curves form the rock inscription of Wufu tomb and eleven age estimates from the petroglyphs of Xiaofangyan and Son- glongshan sites. The calibrated data indicate that the creation of the petroglyphs at Xiaofangyan site lasted through a long period from the late Eastern Wu to the early years of Tang Dynasty, while the successive cre- ation of petroglyphs at Songlongshan site occurred during the Tang Dynasty.