摘要
产于含油(气)盆地中的地浸砂岩型铀矿床与油(气)关系密切,在空间上常与油(气)藏呈共生关系。文章认为其成矿条件和控矿因素相似,并且具有成因联系是二者共生的主要原因。砂岩型铀矿和油(气)藏具有相似的成矿大地构造背景、岩相古地理条件、容矿地层、岩性圈闭、构造控矿条件和有机质基础;在成因上油(气)中的不同组分及其次生矿物对铀有重要的吸附和还原作用,是铀沉淀富集的重要因素之一,铀等放射性元素的存在也有利于油气的生成。由于成矿机理的差异性,砂岩型铀矿与油(气)藏属于异体共生矿床,二者的产出位置并不完全重叠,砂岩型铀矿的产出位置往往更靠近盆缘,且在油(气)储层上方,或以单一矿种产出。
The in-situ leaching sandstone-type uranium deposit in petroliferous basin is closely related to oil-gas reservoir spatially and they are formed under similar condition and controlled by the similar factors thus always occur together. On the other hand, they are similar in geotectonic position, lithofacies palaeo- geography, host strata, lithologic trap, ore-controlling structure and organic matter basis. Different com- ponents and secondary minerals in oil and gas can absorb uranium to cause precipitation and enrichment of uranium minerals. Presence of uranium and other radioactive elements is conducive to the evolution of hy- drocarbon. However, due to some difference in the ore-forming mechanism they occur in different position and don＇t completely overlap. The sandstone type uranium deposits tend to be more close to the edge of the basin above the oil-gas reservoir or accumulated as independent uranium deposit.
出处
《地质找矿论丛》
CAS
CSCD
2016年第4期529-537,共9页
Contributions to Geology and Mineral Resources Research
基金
核能开发项目"准格尔大型叠合盆地地浸砂岩型铀矿预测技术研究"(编号:2311220702016)资助
作者简介
妥成荣（1982-），男，工程师，中科院兰州地质研究所在读硕士研究生，含油气沉积盆地专业。通信地址：甘肃省兰州市城关区东岗西路382号，中科院兰州地质研究所；邮政编码：730000；E-mail：tuoluzi@163．com
作者简介：黄志新。男，高级工程师，博士，研究方向铀矿地质。通信地址：北京市朝阳区安外小关东里10号院，中核集团核工业北京地质研究院；邮政编码：100029；E-mail：zhixinhuang@hotmail．com
