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应用一种局部优化方法——模拟退火法对磷灰石裂变径迹长度分布及径迹年龄进行热史的反演。反演中采取了Laslet等(1987)的扇型径迹退火模型。通过对理论热史模型及实测资料的反演,结果表明应用磷灰石裂变径迹数据提取热史信息是有效的。但是,由于径迹的退火主要受温度的控制,因此以前记录在径迹中的热史信息有可能被后期高温改造而难以反映。指出磷灰石径迹资料在冷却盆地的应用可以获取较精确的热史信息,而在有复杂演化史的盆地中精度较差。
A local optimization method, simulated annealing method, was used to invert thermal history of apatite fission track length distribution and track age. In the inversion Lasser et al. (1987) fan-shaped track annealing model was adopted. The inversion of theoretical thermal history model and measured data shows that it is effective to extract thermal history information by using apatite fission track data. However, since the annealing of the tracks is mainly controlled by the temperature, the thermal history information previously recorded in the tracks may be hard to be reflected by the post-high temperature transformation. It is pointed out that the application of apatite track data in the cooling basin can obtain more accurate thermal history information, while the accuracy of the basin with complex evolution history is poor.