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就地产生的１０Ｂｅ和２６Ａｌ是宇宙射线与地表岩石发生核反应而生成的长寿命放射性核素，半衰期分别为１５和０７Ｍａ．它们的地表产率随海拔高度和地磁纬度的不同而变化．在高纬度的海平面，１０Ｂｅ和２６Ａｌ在纯石英中的就地产率分别为６和３６（原子／ｇ）．产率一定时，它们在岩石中的浓度积累将主要取决于样品的暴露条件（埋藏深度和侵蚀速率）和暴露时间．因此，通过测量它们在岩石中的含量，可以定量估计岩石的暴露条件和暴露年龄．本文详细描述了不同暴露情况１０Ｂｅ和２６Ａｌ在岩石中随时间积累的定量模型．
10Be and 26Al generated locally are long-lived radionuclides produced by nuclear reactions of cosmic rays with surface rocks with half-lives of 1.5 and 0.7 Ma, respectively. Their surface productivity varies with altitude and geomagnetic latitude. At high latitudes sea level, the native yields of 10Be and 26Al in pure quartz are 6 and 36 (atoms / g), respectively. At constant yields, their concentration in rock will mainly depend on the sample exposure conditions (burial depth and erosion rate) and exposure time. Therefore, by measuring their content in the rock, the rock exposure conditions and exposure ages can be quantitatively estimated. This paper describes in detail the quantitative models for the accumulation of 10Be and 26Al in rocks over time for different exposures.