【摘要】 研究了用牙珐琅电子自旅共振测年法测定早更新世古人类和石器地点年代中存在的若干基本问题：（1）指数拟合能否较准确地测定累积剂量；（2）牙珐琅ESR信号的热稳定性；（3）样品中铀加入模式；（4）珐琅中高铀含量对测年的影响。结果认为，对上述因素未完全了解和未做相应校正之前，早更新世牙珐琅的早期细加入ESR年龄很可能只是真实年龄的下限。更多还原

【Abstract】 The following problems regarding the ESR dating of fossil enamel samples from palaeo-anthropological and palaeolithic sites of Early Pleistocene are discussed:1) the applicability of exponential fitting in the additive method for reliable AD determination, 2) the thermo-stability of the g= 2.0018 line of hydroxyapatite and its influence on apparent ESR ages; 3) the right selection of U-uptake models, and 4) the effect of high U-content in enamel on the ESR ages. It is concluded that the ESR-EU ages of Early Pleistocene enamel samples can only be regarded as the lower limit of the true ages if no appropriate corrections for the factors discussed above are made.更多还原