| Only on the time scale will various processes and affairs of environmental evolvement have their own exact meanings, which can bring us some laws at present. Making sure of the layers' age, and obtaining the high-resolution sequence (HRS) of the environmental evolvement, are the key to reveal the changes on kilo-scale in the loess areas. And it is also important for us to forecast the trend of these changes. However, there are a series of problems, the few aging datum, the limitation of the data source and so on, existed in the foundation of the HRS.West Mountain of Peking is well known as a geology and physiognomy museum in the world. And it is named for the Malan Loess' typical region where scientists research the Chinese loess of last glacial gyration and ancient weather. This paper aims to establish the age sequence of Malan Loess in the eastern Zhaitang brickyard section. For the purpose of reducing the dating error, and improving the accuracy of the dating, we do some researchful work in the dating method. Then the age sequence we have established indicates that the dividing age between L1 and S1 approximately occurred in 74ka B.P. And the dividing age between S0 and L1 is about 10ka B.P., which coincides with the actual geologic age. The dating age, compared with the recordation of oxygen isotope curve of deep sea, is significateative.Moreover, we calibrate the Irradiated system of Optical Luminescence Dating Laboratory systemically and calculate the rate of the irradiation dose. Aiming at the influence of the long-term accumulation of low dose rate source and the short-term accumulation of high dose rate source irradiation on the geologic sample, we also do some integrant work during all the researchful process.
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