摘要
天然裂变径迹的形成和演化是一个连续不可逆的过程,经历了漫长地质演化的矿物的所有裂变径迹综合起来就可以看作—个热时钟体系。它不仅反映了矿物冷却到封闭温度(退火温度)的时间,还记录了矿物所经历的低于封闭温度的整个热历史的信息。由此可以建立起用于恢复矿物热史信息的各种模型(包括时间——温度模型)。这些模型的建立对沉积盆地沉降/埋藏历史、造山带浅部壳层冷却/剥露历史的研究以及低温热历史重建等地学方面的应用意义重大。
Formation and evolvement of Fission - tracks is a continuous and unreversible reaction. All tracks are colligated into an integrity thermal - clock systemafter coming through a long geological history. Time is reflected when the sample reach to the annealing temperature, and die whole thermal - history experienced is also recorded in the tracks. Based on various models (t - T) we could analyse thermal evolution of sedimentary basins, conjecture age and thermal history of ore deposits, post - erogenic belts and so on. In the article we would like to introduce the fundamental, experiment -methods and applications of fission - track dating technique.
