论文部分内容阅读
矿物的裂变径迹年龄分析可有效地用于热液矿床成矿时代的研究。河北下营坊金矿区成矿温度为：早期矿化370—290℃，主要成矿期230—170℃，成矿晚期150—80℃。石英-绢云母化带锆石和磷灰石的裂变径迹年龄分别为153．9Ma和1033Ma。由于锆石和磷灰石裂变径迹封闭温度通常分别为250℃和110℃，所以这是主要成矿时代的体现，成矿时问持续50Ma以上。
Fission track age analysis of minerals can be effectively used in hydrothermal mineralization research. The metallogenetic temperature of Xiayingfang gold deposit in Hebei province is: early mineralization 370-290 ℃, main mineralization period 230-170 ℃, late metallogenetic stage 150-80 ℃. The fission track ages of quartz-sericite zircon and apatite are 153.9Ma and 1033Ma, respectively. Since the sealing temperatures of zircon and apatite fission track are usually 250 ℃ and 110 ℃, respectively, this is an indication of the main metallogenic epoch, which lasted for over 50Ma.