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本文提出了用裂变径迹(FT)数据重建上冲带上升历史的一种试验性方法。由于完全可以证实,在山脉演化过程中热梯度随时间和深度变化而发生显著的变化,故我们采用一种与时间有关的热模式来推导所采岩石样品的温度/时间历史,只要给出诸如上冲地块厚度(T_t)、侵蚀速度(V(t))这类参数的话。这些参数可以在大量试验(“蒙特卡洛”模拟)的可供接受的范围内随机选取。我们将这个方法应用于科西嘉岛。那是阿尔卑斯上冲带的很好实例。最令人惊讶的结果是,同样一组FT数据,可以用变化范围很大的不同的侵蚀历史来解释。因此,为了给出合理的结果,就需要更多的地质限制条件。就科西嘉岛的情况来说,只要有关于最小的侵蚀厚度及侵蚀阶段的相对范围的资料,就可以对上冲以来的侵蚀/上升历史提出充分的限制条件。
This paper presents a tentative method to reconstruct the ascending history of the punching band using fission track (FT) data. Since it can be fully proved that the thermal gradients vary significantly with time and depth during the evolution of the mountains, we use a time-dependent thermal model to derive temperature / time histories of the sampled rock samples, On the red block thickness (T_t), erosion rate (V (t)) such parameters. These parameters can be randomly selected from a range of tests (Monte Carlo simulations) that are acceptable to you. We apply this method to Corsica. That’s a good example of a punch on the Alps. The most surprising result is that the same set of FT data can be explained by different erosion histories that vary widely. Therefore, more geological constraints are needed to give reasonable results. In the case of Corsica, sufficient information on the minimum erosion thickness and the relative extent of the erosion phase provides sufficient constraints on the erosion / ascent history since the ascent.