摘要
用热活化技术,对甘肃兰州盆地和临夏盆地石膏样品的测年信号稳定性,以及石膏转化为干石膏的脱水情况进行了研究。根据干石膏在不同温度下的等温退火实验,应用双二级动力学和双活化能模式,估算出干石膏中陷阱电子g=2 004峰的平均寿命在20℃时为1 78×107a。
Thermal stability of dating signals has been studied for the sample of gypsum from Lanzhou and Linxia basins of Gansu Province by using thermal activation technique,and the experiments of the dehydration reaction from gypsum to anhydrite has been made.According to the isothermal annealing experiments at different temperatures,the average life of anhydrite was evaluated to be about 1.78×10^(7)a at 20℃ by using double second-order kinetics equation with two model of activation energies.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2004年第3期97-102,共6页
Marine Geology & Quaternary Geology
基金
地质大调查项目"干旱地区石膏ESR测年的研究"
