Abstract:
The fission track technology has been applied to many geological applications with advantages of less sample consumption, lower closure temperature and wider dating range. For example, fully or partially annealed samples can effectively record the cooling-exhumation history and constrain the onset of thrust fault activity. The relationship between the weathering and denudation history of the overlying rocks and the preservation of the deposit can be used to quantify the amount of denudation and uplift in the deposit and to predict the mineralization. The fission track closure temperature of zircon is corresponding to the temperature interval of gas production, which can also be applied to oil and gas exploration studies. Recently, the combination of elemental content analysis with fission track techniques was also allowed for provenance analysis, and the implementation of LA-ICP-MS technology has brought the dawning for low U content mineral track measurements. The authors in this paper briefly summarize the results of fission annealing studies of apatite and zircon and the possible implications for data interpretation. The apatite annealing is affected by temperature, chemical composition, crystallographic anisotropy, and
Dpar value, while zircon track thermal stability is reduced mainly due to radiation damage effects. Laboratory annealing characterization provides an important theoretical reference for understanding the complex chemical dynamics of fission track annealing, but actual data interpretation must be combined with geological facts to obtain a clearer temporal framework for studying the evolution of geothermal events. The typical case studies of track dating on mineral deposits, mountain uplift denudation and basin thermal history were briefly analyzed in this paper, which would provide guidelines for relevant application studies of fission track.