准噶尔盆地东部喀木斯特地区砂岩型铀矿目的层岩石学特征及其意义
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摘要
准噶尔盆地是我国重要的能源勘查基地,其铀资源勘查一直难以突破。通过对准东喀木斯特地区煤田资料的"二次开发",进而择优开展钻探验证,发现了工业铀矿体。中侏罗统头屯河组是该区的含矿目的层位,具有十分良好的找矿前景和研究意义。为了深入了解该区目的层砂体的岩石学特征及铀成矿作用,通过详细的野外地质调查、钻孔岩心观察等方法,利用实验室分析测试技术,结合室内地质工作和前人已有成果,研究了该区砂岩的碎屑成分特征、蚀变作用及成岩作用等岩石学特征,并对其铀矿物成分及后生铀成矿作用进行了探索。结果表明,该区砂岩成岩作用较强,主要铀矿物类型为铀石、钛铀矿,具备发育铀储层的良好条件,铀矿化作用较好,找矿远景好。
Junggar basin is an important energy exploration base in China. The exploration of its uranium resources has been difficult to break through. By secondary development of the coal exploration results of Kamusite area in eastern Junggar basin, further drilling verification, industrial uranium orebodies have been found. The Middle Jurassic Toutunhe Formation is the ore-bearing target in this area, has very good prospecting prospect and research significance. In order to understand the petrological characteristics and uranium mineralization of the target-layer sand body in this area, through the detailed field geological survey, borehole observation and other methods, with the advanced analysis and testing technology, combined with the interior geology work and previous achievements,the characteristics of clastic compositions, alteration and diagenesis of sandstone in this area were studied. And the composition of uranium ore and the mineralization of epigenetic uranium were studied. The results show that sandstone diagenesis is strong in this area, has good conditions for developing uranium reservoirs, and the uranium mineralization is better, the main uranium ore types are coffinite and brannerite.
Junggar basin is an important energy exploration base in China. The exploration of its uranium resources has been difficult to break through. By secondary development of the coal exploration results of Kamusite area in eastern Junggar basin, further drilling verification, industrial uranium orebodies have been found. The Middle Jurassic Toutunhe Formation is the ore-bearing target in this area, has very good prospecting prospect and research significance. In order to understand the petrological characteristics and uranium mineralization of the target-layer sand body in this area, through the detailed field geological survey, borehole observation and other methods, with the advanced analysis and testing technology, combined with the interior geology work and previous achievements,the characteristics of clastic compositions, alteration and diagenesis of sandstone in this area were studied. And the composition of uranium ore and the mineralization of epigenetic uranium were studied. The results show that sandstone diagenesis is strong in this area, has good conditions for developing uranium reservoirs, and the uranium mineralization is better, the main uranium ore types are coffinite and brannerite.
引文
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[6]鲍志东,赵艳军,祁利祺,等.构造转换带储集体发育的主控因素:以准噶尔盆地腹部侏罗系为例[J].岩石学报,2011,27(3):867-877.BAO Zhidong,ZHAO Yanjun,QI Liqi,et al.Controlling factors of reservoir development in structural transfer zones:A case study of the inner Junggar basin in Jurassic[J].Acta Petrologica Sinica,2011,27(3):867-877
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[14]王哲,金振奎,刘学功,等.准噶尔盆地东部滴水泉地区侏罗系八道湾组沉积特征与沉积演化模式[J].天然气地球科学,2013,24(2):282-291.WANG Zhe,JIN Zhenkui,LIU Xuegong,et al.Sedimentary characteristics and evolution model of the Jurassic Badaowan Formation in the Dishuiquan area in eastern Junggar basin[J].Natural Gas Geoscience,2013,24(2):282-291
[15]周宇,黄澎涛,殷栋法,等.吐哈盆地西南缘砂岩型铀矿目的层后生蚀变特征及成矿意义[J].中国煤炭地质,2015,27(12):7-11.ZHOU Yu,HUAGN Pengtao,YIN Dongfa,et al.Sandstone-type uranium deposit target layer epigenetic alteration features and ore-forming significance in southwestern margin of Turpan-Hami basin[J].Coal Geology of China,2015,27(12):7-11.
[16]陈业全,王伟锋.准噶尔盆地构造演化与油气成藏特征[J].石油大学学报(自然科学版),2004,28(3):4-8.CHEN Yequan,WANG Weifeng.Structural evolution and pool-forming in Junggar basin[J].Journal of the University of Petroleum,China(Edition of Natural Science),2004,28(3):4-8.
[17]杨文孝,况军,徐长胜.准噶尔盆地大油气田形成条件和预测[J].新疆石油地质,1995,16(3):200-211.YANG Wenxiao,KUANG Jun,XU Changsheng.Formed conditions and forecasting of giant oil and gas fields in Junggar basin[J].Xinjiang Petroleum Geology,1995,16(3):200-211.
[18]史宣玉,喻春辉,热依汗古丽,等.准噶尔盆地侏罗系沉积体系与油气关系[J].新疆石油地质,1995,16(3):233-242.SHI Xuanyu,YU Chunhui,RAIHAN Guli,et al.Sedimentary system and hydrocarbon relationship of Jurassic in Junggar basin[J].Xinjiang Petroleum Geology,1995,16(3):233-242.
[2]陈发景,汪新文,汪新伟.准噶尔盆地的原型和构造演化[J].地学前缘,2005,12(3):77-89.CHEN Fajing,WANG Xinwen,WANG Xinwei.Prototype and tectonic evolution of the Junggar basin,northwestern China[J].Earth Science Frontiers,2005,12(3):77-89.
[3]杨有星,金振奎,时晓章.准噶尔盆地西北缘检188井区下侏罗统八道湾组沉积特征及主控因素分析[J].沉积与特提斯地质,2010,30(4):38-49.YANG Youxing,JIN Zhenkui,SHI Xiaozhang.Sedimentary facies and controlling factors of the Lower Jurassic Badaowan Formation in the Junggar basin[J].Sedimentary Geology and Tethyan Geology,2010,30(4):38-49.
[4]金若时,黄澎涛,苗培森,等.准噶尔盆地东缘侏罗系砂岩型铀矿成矿条件与找矿方向[J].地质通报,2014,33(2/3):359-369JIN Ruoshi,HUANG Pengtao,MIAO Peisen,et al.Metallogenic conditions and prospecting targeting of the Jurassic sand type uranium deposits on the eastern margin of Junggar basin[J].Geological Bulletin of China,2014,33(2/3):359-369
[5]LI Meng,SHAO Longyi,LU Jing,et al.Sequence stratigraphy and paleogeography of the Middle Jurassic coal measures in the Yuqia coalfield,northern Qaidam basin,northwestern China[J].Aapg Bulletin,2014,98(12):2531-2550.
[6]鲍志东,赵艳军,祁利祺,等.构造转换带储集体发育的主控因素:以准噶尔盆地腹部侏罗系为例[J].岩石学报,2011,27(3):867-877.BAO Zhidong,ZHAO Yanjun,QI Liqi,et al.Controlling factors of reservoir development in structural transfer zones:A case study of the inner Junggar basin in Jurassic[J].Acta Petrologica Sinica,2011,27(3):867-877
[7]韩守华,李娴静,陈能贵,等.准噶尔盆地南缘中段下组合储层特征及控制因素分析[J].沉积与特提斯地质,2012,32(4):52-58.HAN Shouhua,LI Xianjing,CHEN Nenggui,et al.Hydrocarbon reservoirs and their controlling factors in the lower associations of the Middle Part of southern Junggar basin[J].Sedimentary Geology and Tethyan Geology,2012,32(4):52-58.
[8]肖序常,汤耀庆,冯益民.新疆北部及其邻区大地构造[M].北京:地质出版社,1992.
[9]张冬玲,鲍志东,杨文秀.准噶尔盆地侏罗系层序地层格架的建立及主控因素分析[J].大庆石油学院学报,2005,29(2):10-12.ZHANG Dongling,BAO Zhidong,YANG Wenxiu.Foundation of sequence stratigraphy framework and the analysis of the dominating factors of Jurassic in Junggar basin[J].Journal of Daqing Petroleum Institute,2005,29(2):10-12.
[10]于景维,郑荣才,祁利祺,等.准噶尔盆地阜康凹陷东部斜坡带中侏罗统头屯河组高分辨层序与沉积微相精细分析[J].地质论评,2014,60(6):1337-1347.YU Jingwei,ZHENG Rongcai,QI Liqi,et al.Precise analysis on high-resolution sequence stratigraphy and micro-facies of Toutunhe Formation of Middle Jurassic in the east slope zone,Fukang sag,Junggar basin[J].Geological Review,2014,60(6):1337-1347.
[11]鲍志东,刘凌,张冬玲,等.准噶尔盆地侏罗系沉积体系纲要[J].沉积学报,2005,23(2):194-202.BAO Zhidong,LIU Ling,ZHANG Dongling,et al.Depositional system frameworks of the Jurassic in Junggar basin[J].Acta Sedimentologica Sinica,2005,23(2):194-202.
[12]金若时,程银行,杨君,等.准噶尔盆地侏罗纪含铀岩系的层序划分与对比[J].地质学报,2016,90(12):3293-3309.JIN Ruoshi,CHENG Yinhang,YANG Jun,et al.Classification and correlation of Jurassic uranium-bearing series in the Junggar basin[J].Acta Geologica Sinica,2016,90(12):3293-3309.
[13]鲍志东,刘凌,张冬玲,等.准噶尔盆地侏罗系沉积体系刚要[J].沉积学报,2005,23(2):194-202.BAO Zhidong,LIU Ling,ZHANG Dongling,et al.Depositional system frameworks of the Jurassic in Junggar basin[J].Acta Sedimentologica Sinica,2005,23(2):194-202.
[14]王哲,金振奎,刘学功,等.准噶尔盆地东部滴水泉地区侏罗系八道湾组沉积特征与沉积演化模式[J].天然气地球科学,2013,24(2):282-291.WANG Zhe,JIN Zhenkui,LIU Xuegong,et al.Sedimentary characteristics and evolution model of the Jurassic Badaowan Formation in the Dishuiquan area in eastern Junggar basin[J].Natural Gas Geoscience,2013,24(2):282-291
[15]周宇,黄澎涛,殷栋法,等.吐哈盆地西南缘砂岩型铀矿目的层后生蚀变特征及成矿意义[J].中国煤炭地质,2015,27(12):7-11.ZHOU Yu,HUAGN Pengtao,YIN Dongfa,et al.Sandstone-type uranium deposit target layer epigenetic alteration features and ore-forming significance in southwestern margin of Turpan-Hami basin[J].Coal Geology of China,2015,27(12):7-11.
[16]陈业全,王伟锋.准噶尔盆地构造演化与油气成藏特征[J].石油大学学报(自然科学版),2004,28(3):4-8.CHEN Yequan,WANG Weifeng.Structural evolution and pool-forming in Junggar basin[J].Journal of the University of Petroleum,China(Edition of Natural Science),2004,28(3):4-8.
[17]杨文孝,况军,徐长胜.准噶尔盆地大油气田形成条件和预测[J].新疆石油地质,1995,16(3):200-211.YANG Wenxiao,KUANG Jun,XU Changsheng.Formed conditions and forecasting of giant oil and gas fields in Junggar basin[J].Xinjiang Petroleum Geology,1995,16(3):200-211.
[18]史宣玉,喻春辉,热依汗古丽,等.准噶尔盆地侏罗系沉积体系与油气关系[J].新疆石油地质,1995,16(3):233-242.SHI Xuanyu,YU Chunhui,RAIHAN Guli,et al.Sedimentary system and hydrocarbon relationship of Jurassic in Junggar basin[J].Xinjiang Petroleum Geology,1995,16(3):233-242.
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