摘要
测定了岩灰洞钟乳石和骨化石样的Th-230/U-234和Th-227/Th-230年龄。覆盖整个洞穴的表层钙板为20.6万年,位于三、四堆积层之下的流石和石笋为24.0万年。含化石和文化遗物的堆积物在这二个洞穴碳酸钙生长期间形成,因此应划为中更新世晚期,桐梓人应属晚期直立人。基于地层顺序和二种铀系年龄对照,讨论了钟乳石和骨化石铀系年龄的可信度。
Th-230/U-234 and Th-227/Th-230 dating was applied to calcite and fossil bone samples from Yanhui Cave, the site of Tongzi Man in Northern Guizhou. The age of the upper travertine layer covering all cave deposits is 206 Ka. The flowstone and stalagmite, under third and fourth layer respectively, are of the age of 240 Ka. The fossil and artifact containing sediments, stratigraphically between these two speleothem formations, should be deposited in a late period of Middle Pleistocene, and Tongzi Man should be classified as late Homo Erectus. The reliability of obtained results was discussed based on the stratigraphic evidences and on the intercom-parison between the results of two U-series methods.
出处
《人类学学报》
CSCD
北大核心
1991年第1期65-72,共8页
Acta Anthropologica Sinica
基金
贵州省自然科学基金资助课题
关键词
桐梓人遗址
铀系年龄
直立人
Tongzi Man's site
U-series dating
Homo erectus
