MINEROGENETIC CONDITIONS AND PROSPECTING DIRECTION OF THE CRETACEOUS SANDSTONE URANIUM DEPOSIT IN NORTHEAST SONGLIAO BASIN
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摘要:
通过松辽盆地东北缘蚀源区铀源条件、中生代构造演化、白垩系沉积建造研究，结合石油部门地震连井剖面等资料，综合分析了松辽盆地东北部砂岩型铀矿的成矿条件研究，认为盆缘的富铀花岗岩体提供了丰富的铀源，中生代后期反转构造形成的剥蚀天窗为含铀含氧水的渗入渗出提供了通道.研究结果显示，松辽盆地东北部绥棱地区为最有利的砂岩型铀矿找矿部位，主要找矿目标层为上白垩统泉头组兼顾浅部姚家组，找矿类型为层间氧化带型.
Abstract:Through studying the uranium source conditions, Mesozoic tectonic evolution and Cretaceous sedimentary formation of the provenance area in northeast Songliao Basin, combined with the seismic well-tie section data of petroleum sectors, the paper analyzes the metallogenic conditions of sandstone uranium deposits comprehensively. It is believed that the uranium-rich granite body in the basin margin provides abundant uranium sources and the denudation window formed by the inversion structure in Late Mesozoic serves as the channel for infiltration and seepage of uranium-containing and oxygenated water. The results show that Suiling area in the northeast of Songliao Basin is the most favorable prospecting site for sandstone uranium deposits, with the Upper Cretaceous Quantou Formation and the shallow part of Yaojia Formation as the main target layers, focusing on the type of interlayer oxidation zone.
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表 1 松辽盆地北部含铀花岗岩蚀源区汇入盆地活化铀总量计算表➊
Table 1. Total amount of the activated uranium migrated into basin from uranium-bearing granite provenance area
地区 大兴安岭蚀源区 小兴安岭蚀源区 张广才岭蚀源区 合计 蚀源区面积/km2 19000 9800 14500 花岗岩占蚀源区面积/% 55% 65 80 花岗岩剥蚀厚度/m 100 100 100 花岗岩平均铀含量/10-6 7.4 7.02 5.93 花岗岩铀浸出率/% 23.42 22.13 22.13 活化铀总量/104 t 181 99 152 432 
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[1] 张金带, 李子颖, 徐高中, 等.我国铀矿勘查的重大进展和突破[M].北京:地质出版社, 2015:210-232.
[2] 宋鹰.松辽盆地裂后期构造反转及其动力学背景分析[D].武汉: 中国地质大学, 2010: 1-137.
[3] 孙永河, 白鹿, 付晓飞.松辽盆地北部T2反射层断裂密集带成因机制[J].地球科学——中国地质大学学报, 2013, 38(4):797-806. http://d.old.wanfangdata.com.cn/Conference/8159338
[4] 赵忠华, 白景萍, 赖天功.松辽盆地北部反转构造与砂岩型铀矿成矿作用[J].铀矿地质, 2018, 34(5):274-279. http://d.old.wanfangdata.com.cn/Periodical/ykdz201805003
[5] 赵忠华, 赖天功.松辽盆地北部放射性异常产出特征及控制因素分析[J].世界核地质科学, 2018, 35(1):1-7. http://d.old.wanfangdata.com.cn/Periodical/sjhdzkx201801001
[6] 罗梅, 赵杰.大庆油田北部可地浸砂岩型铀矿化分布特征及成因[J].铀矿地质, 2002, 18(6):328-334. http://d.old.wanfangdata.com.cn/Periodical/ykdz200206002
[7] 荣辉, 焦养泉, 吴立群, 等.松辽盆地南部钱家店铀矿床后生蚀变作用及其对铀成矿的约束[J].地球科学——中国地质大学学报, 2016, 41(1):153-166. http://d.old.wanfangdata.com.cn/Periodical/dqkx201601012
[8] 焦养泉, 吴立群, 荣辉.砂岩型铀矿的双重还原介质模型及其联合控矿机理:兼论大营和钱家店铀矿床[J].地球科学, 2018, 43(2):459-474. http://d.old.wanfangdata.com.cn/Periodical/dqkx201802009
[9] 叶德燎.松辽盆地东南隆起区下白垩统层序地层格架及油气成藏规律[J].地质科学, 2005, 40(2):227-236. http://d.old.wanfangdata.com.cn/Periodical/dzkx200502007
[10] 何中波, 秦明宽, 宋继叶, 等.准噶尔盆地东北部侏罗系砂岩型铀矿成矿环境与找矿方向探讨[J].矿床地质, 2018, 37(1):175-190. http://d.old.wanfangdata.com.cn/Periodical/kcdz201801013
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