人类学家历来认为,北美洲的最初的居民是由西伯利亚沿今日的白令海峡迁徙到阿拉斯加的。可是,从最近在美国加利福尼亚州西南部的圣罗莎岛上发现的 Ancient Woman’s Bones来看,北美洲的最初的居民似乎是从海上移居而来的玻利尼西亚人或...人类学家历来认为,北美洲的最初的居民是由西伯利亚沿今日的白令海峡迁徙到阿拉斯加的。可是,从最近在美国加利福尼亚州西南部的圣罗莎岛上发现的 Ancient Woman’s Bones来看,北美洲的最初的居民似乎是从海上移居而来的玻利尼西亚人或南亚洲人。最新科技测定Woman’s Bones的年龄已经达到13000岁,这又改写了一个历史的结论:…humans arrived in North Americaabout 11,500 years ago。展开更多
Elemental analysis of archaeological bone plays an important role in the study of the dietary habits of ancient animals. The elemental characteristic of diagenetic skeletons depends on the surrounding circumstance. Th...Elemental analysis of archaeological bone plays an important role in the study of the dietary habits of ancient animals. The elemental characteristic of diagenetic skeletons depends on the surrounding circumstance. The study of environmental influence on the elemental concentration of ancient bone is significant. In this paper, the diagenetic influence on archaeological skeletons is analyzed by microbeam X-ray fluorescence （p.-XRF）. The results show that the enamel is an excellent barrier to the diagenesis and the element Sr in bone isn＇t susceptible to contamination from the buried environment.展开更多
文摘人类学家历来认为,北美洲的最初的居民是由西伯利亚沿今日的白令海峡迁徙到阿拉斯加的。可是,从最近在美国加利福尼亚州西南部的圣罗莎岛上发现的 Ancient Woman’s Bones来看,北美洲的最初的居民似乎是从海上移居而来的玻利尼西亚人或南亚洲人。最新科技测定Woman’s Bones的年龄已经达到13000岁,这又改写了一个历史的结论:…humans arrived in North Americaabout 11,500 years ago。
基金Supported by Knowledge Innovative Program of Chinese Academy of Sciences (KJCX3.SYW.N12)National Natural Science Foundation of China (50432010, 10675143)Young Scientist Innovative Foundation of IHEP, CAS (542007 IHEPZZBS546100)
文摘Elemental analysis of archaeological bone plays an important role in the study of the dietary habits of ancient animals. The elemental characteristic of diagenetic skeletons depends on the surrounding circumstance. The study of environmental influence on the elemental concentration of ancient bone is significant. In this paper, the diagenetic influence on archaeological skeletons is analyzed by microbeam X-ray fluorescence （p.-XRF）. The results show that the enamel is an excellent barrier to the diagenesis and the element Sr in bone isn＇t susceptible to contamination from the buried environment.
