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本文应用热年代学方法,测定侵入体的热历史,进而分析燕山山脉的隆升过程。研究结果表明,燕山造山带的隆升过程在时空上具有明显非均匀性。燕山中段南部的盘山岩体约于226.48 Ma侵位,在96～35 Ma期间以3.45 C/Ma的速度冷却,对应于0.115 mm/a的快速隆升过程;燕山中段北部的雾灵山岩体约于132 Ma侵位,在86～45 Ma期间以5.61/Ma的速度冷却,对应于0.186 mm/a的快速隆升过程;燕山西段的云蒙山岩体约于143 Ma侵位,在106～103.95 Ma与20～
In this paper, the thermal history of invaded bodies is determined by using the method of thermochronology, and then the uplift process of Yanshan Mountains is analyzed. The results show that the uplift process of the Yanshan orogenic belt has obvious inhomogeneity in time and space. The Panshan pluton in the southern part of Yanshan Mountains was emplaced at about 226.48 Ma and cooled at a rate of 3.45 C / Ma during 96-35 Ma, corresponding to a rapid uplift of 0.115 mm / a. The Wuling Mountain massif in the northern part of Yanshan Mountain It was emplaced at 132 Ma and cooled at a rate of 5.61 / Ma during 86-45 Ma, corresponding to a rapid uplifting process of 0.186 mm / a. The Yunmeng Mountain in the western part of the Yanshan Mountains was emplaced at about 143 Ma, ~ 103.95 Ma and 20 ~