摘要
Since 1963 when the <sup>210</sup>Pb dating method was first used by Goldberg, the <sup>210</sup>Pb<sub>ex</sub> technique is widely employed for dating lake and estuarine sediments. However, due to the <sup>222</sup>Rn loss from the surface of sediments, the calculated sediment accumulation rate
基金
Project supported by the National Natural Science Foundation of China.