ESR-铀系法牙齿化石测年及其在中早更新世考古遗址年代学研究中的应用  

Tooth fossil dating with combined ESR/U-series methods for studying Middle-Early Pleistocene archaeological sites

作　　者：韩非[1,2] 尹功明[1] 刘春茹[1] 高璐[1] 

机构地区：[1]中国地震局地质研究所,地震动力学国家重点实验室,北京100029 [2]法国国家自然历史博物馆史前部,1,rue Rene Panhard 75013,Paris,France

出　　处：《核技术》2011年第9期651-657,共7页Nuclear Techniques

基　　金：中央级公益性科研院所基本科研业务费(DF-IGCEA-0608-2-17);国家自然科学基金(40902051)资助

摘　　要：介绍了电子自旋共振(ESR)法与铀系测年法联合对牙齿化石测年的基本原理,通过引入参数p反映牙齿化石中各组织的铀吸收过程;阐述了ESR-U系联合测年法的测年时限、测年精度及影响因素。对于我国中早更新世考古遗址的化石测年具有潜在优势,是目前唯一可行的对老地点化石样品进行直接测年的方法。In this paper, we give a review on combined ESR/U-series methods for dating tooth fossil from Middle-Early Pleistocene sites. This approach allows estimating the history of uranium uptake in each dental tissue by using a one-parameter （p-value） diffusion equation, being more accurate than the conventional methods where the mode of uranium uptake is predetermined. Conventional ESR dating postulates two models： an early uptake （EU） model which assumes that uranium was incorporated shortly after the sample burial, and a linear uptake （LU） model where uranium is supposed to have been incorporated at a constant rate since the time of burial. The previous works stated that correct ESR age of a sample lies always somewhere between the EU and LU uptake ages. In recent years, combined ESR/U-series methods are becoming known as a unique approach for dating old fossils directly, and were applied on several archaeological sites in the world. The archaeologists and dating specialists in China are called on to make a good joint effort and collaboration in installing and developing the combined ESR/U-series dating methods and to carry out better studies on chronology of Middle-Early Pleistocene sites.

关 键 词：ESR测年 铀系测年 牙齿化石 中早更新世遗址 

分 类 号：P533[天文地球—古生物学与地层学]