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本文详细研究石源龙地区铀矿床的同位素地质特征，并由此得出：ａ．成矿时间大约为９２Ｍａ～１１５Ｍａ；ｂ．成矿溶液来自当地中生代的大气降水；ｃ．成矿溶液中锶和稀土元素的来源与南园组的流纹质熔结凝灰岩有关；ｄ．成矿过程中伴随着ＣＯ２的逸失发生了同位素交换动力学效应，而且ＣＯ２大量逸失是导致沥青铀矿沉淀的主要原因。
This paper studies in detail the isotopic geologic characteristics of uranium deposits in the Shiyuanlong area and concludes: a. Metallogenic time is about 92Ma ~ 115Ma; b. Mineralization solution from the local Mesozoic atmospheric precipitation; c. Sources of strontium and rare earth elements in the ore-forming solution are related to rhyolitic melted tuff in the Nanyuan Formation; d. In the process of mineralization, the isotope exchange kinetic effect accompanied by the loss of CO2 occurs, and a large amount of CO2 loss is the main reason for the precipitation of pitch uranium deposits.