摘要
用ICP-AES和XRF方法测试了湖北辽瓦店遗址T0709地层中对人类活动有指示意义的元素含量,恢复了夏代以来遗址地层记录的人类活动特征:(1)夏代文化层(250～325cm)时期是整个剖面的最湿热阶段,人类活动对自然环境干扰相对有限,生态系统良好。(2)东周文化层下段(205～250cm)仍是相对湿热的环境,磁化率大幅上升,人类活动的强度加大。其中220cm处的K、Mn、Sr、Ba含量骤降,说明该层段可能因自然灾害等原因曾被废弃。而在205cm处地层中8种元素的含量快速升高,表明在下东周文化层中期人类活动异常频繁。东周文化层上段(120～205cm)气候变冷、风化作用减弱,Pb含量的异常和Cu含量高值暗示遗址有青铜器制造活动的遗迹。(3)明清文化层(70～120cm)时期气候干冷。本期地层中除Cu含量无显著变化外,Ba、Ca、P、Pb、Sr、Mn、K均有高值层位,而且本层位磁化率较高,这表明该时期人类活动的繁荣。同时,本层中含有陶片和瓷片以及较高的Pb含量,说明遗址在明清时期曾有瓷器作坊的历史;而Cu含量的低值则表明青铜器的制造和使用已丧失了原有的地位。
Through the methods of ICP-AES and XRF, the study measured concentrations of relative elements and various oxides of samples from profile T0709 of the Liaowadian Site, which could reflect human activities or environmental changes. Based upon these data, this paper recovered basic characteristics of human activities in the Liaowadian Site since Xia Dynasty as follows： （1）Xia Dynasty （250-325 cm） was quite wet and warm along the whole profile and eco-system was fine,with limited interferences against the nature. （2） The lower section of Eastern Zhou Dynasty （2054250 cm） was still under the wet and warm state. Likewise, the susceptibility of the layers rose abruptly,meaning human activities in this stage to be intensive. This could be demonstrated by high concentrations of eight elements at layer of 205 era. Howev- er,the layers at 220 cm may appear a transiently abandoned settlement ,showed by low contents of potassi- um, manganese, strontium and barium. The upper section of Eastern Zhou Dynasty layer （120-205 cm） indicated cooling climate and weak weathering. In this period, the concentrations of lead and copper be- came exceptionally high, implying a bronze manufacture workshop in its history. （3） During the Ming- Qing Dynasty （70-120 cm） the climate continued its dry and cooling trend and contents of Ba, Ca, P, Sr, Mn and K had comparatively high values, and so did susceptibility. Obviously, it was symbols of preva- lence of human activities. In addition, unearthed porcelain proved there was ever a china-ware workshop history. On the other hand, the low value of copper in this layer showed that bronze-making and application had lost its role.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2008年第6期113-118,共6页
Marine Geology & Quaternary Geology
基金
国家科技支撑计划(2006BAK21B02)
国家自然科学基金项目(40701190)
关键词
多元素指标
古人类活动
辽瓦店遗址
multi-element proxy
ancient human activities
the Liaowadian Site
