王龙辉,剡鹏兵,焦养泉,吴立群,张字龙,荣辉,张帆,李振成,钟伟辉

• 1:核工业二○八大队
• 2:中国地质大学(武汉)
• 3:核工业北京地质研究院

摘要(Abstract)：

自2019年以来，鄂尔多斯盆地北部下白垩统找矿获得重大突破，下白垩统有望成为继中侏罗统之后又一重要的砂岩型铀矿找矿目的层，建立下白垩统的成矿模式能够更好地指导找矿工作。基于前人的区域地质资料和现有的钻探与测试资料，对该区下白垩统铀成矿基本地质特征进行了系统总结，并初步构建了下白垩统的铀成矿模式。研究表明：现有的6种岩石类型可划分为3类地球化学类型，铀矿化主要富集于褐色、褐红色砂岩向绿色砂岩过渡的褐灰色砂岩中，绿色砂岩为先氧化后还原形成；下白垩统的铀成矿类型以层间氧化作用为主、潜水氧化作用为辅，成矿年龄主要为晚白垩世；下白垩统的铀成矿模式为“二次氧化”成矿模式，分为3个期次：一次氧化成矿期、大规模还原期和二次氧化成矿期。研究结果可以为鄂尔多斯盆地新层位的铀矿勘查提供参考。

关键词(KeyWords)： 成矿模式;砂岩型铀矿;下白垩统;鄂尔多斯盆地北部

Abstract:

Keywords:

基金项目(Foundation): 中国核工业部地质局项目“鄂尔多斯盆地北部铀矿资源调查评价与勘查”(201902)

作者(Author): 王龙辉,剡鹏兵,焦养泉,吴立群,张字龙,荣辉,张帆,李振成,钟伟辉

DOI: 10.19509/j.cnki.dzkq.2022.0096

参考文献(References)：

• [1] 张抗.鄂尔多斯盆地断块构造及资源[M].西安：陕西科学技术出版社，1989.Zhang K.Fault block structure and resources of Ordos Basin[M].Xi′an:Shaanxi Science and Technology Press,1989(in Chinese).
• [2] 陈祖伊，周维勋，管太阳，等.产铀盆地的形成演化模式及其鉴别标志[J].世界核地质科学，2004,21(3):141-151.Chen Z Y,Zhou W X,Guan T Y,et al.Formation-evolution model of uranium-productive basins and its recognition criteria[J].World Nuclear Geoscience,2004,21(3):141-151 (in Chinese with English abstract).
• [3] 彭云彪，李子颖，方锡珩，等.鄂尔多斯盆地北部2081铀矿床成矿特征[J].矿物学报，2006,26(3):349-355.Peng Y B,Li Z Y,Fang X H,et al.Metallogenetic characteristics of No.2081 Uranium Deposit in the north of Ordos Basin[J].Acta Mineralogica Sinica,2006,26(3):349-355 (in Chinese with English abstract).
• [4] 焦养泉，吴立群，彭云彪，等.中国北方古亚洲构造域中沉积型铀矿形成发育的沉积-构造背景综合分析[J].地学前缘，2015,22(1):189-205.Jiao Y Q,Wu L Q,Peng Y B,et al.Sedimentary-tectonic setting of the deposition-type uranium deposits forming in the Paleo-Asian tectonic domain,North China[J].Earth Science Frontiers,2015,22(1):189-205 (in Chinese with English abstract).
• [5] 张金带，简晓飞，郭庆银，等.中国北方中新生代沉积盆地铀矿资源量调查评价(2000-2010)[M].北京：地质出版社，2013.Zhang J D,Jian X F,Guo Q Y,et al.Investigation and evaluation of uranium resources of Mesozoic and Cenozoic sedimentary basins in northern China(2000-2010)[M].Beijing:Geological Publishing House,2013(in Chinese).
• [6] 刘池洋，吴柏林.油气煤铀同盆共存成藏(矿)机理与富集分布规律[M].北京：科学出版社，2016.Liu C Y,Wu B L.Accumulation mechanism and enrichment distribution of oil,gas,coal and uranium in the same basin[M].Beijing:Science Press,2016(in Chinese).
• [7] 彭云彪，焦养泉，陈安平，等.内蒙古中西部中生代产铀盆地理论技术创新与重大找矿突破[M].武汉：中国地质大学出版社，2019.Peng Y B,Jiao Y Q,Chen A P,et al.Theoretical and technological innovation and major prospecting breakthrough of Mesozoic uranium producing basin in central and western Inner Mongolia[M].Wuhan:China University of Geosciences Press,2019(in Chinese).
• [8] 李子颖，方锡珩，秦明宽.鄂尔多斯盆地北部砂岩铀成矿作用[M].北京：地质出版社，2019.Li Z Y,Fang X H,Qin M K.Sandstone-type uranium mineralization of the northern Ordos Basin[M].Beijing:Geological Publishing House,2019(in Chinese).
• [9] 苗爱生，陆琦，刘惠芳，等.鄂尔多斯砂岩型铀矿床古层间氧化带中铀石的产状和形成[J].地质科技情报，2009,28(4):51-58.Miao A S,Lu Q,Liu H F,et al.Occurrence and formation of coffinite in ancient interlayer oxidizing zone of sandstone type U-deposit in Ordos Basin[J].Geological Science and Technology Information,2009,28(4):51-58 (in Chinese with English abstract).
• [10] 苗爱生，焦养泉，常宝成，等.鄂尔多斯盆地东北部东胜铀矿床古层间氧化带精细解剖[J].地质科技情报，2010,29(3):55-61.Miao A S,Jiao Y Q,Chang B C,et al.Detailed investigation of the paleo-interlayer-oxidation zone of Dongsheng Uranium Deposit in northeastern Ordos Basin[J].Geological Science and Technology Information,2010,29(3):55-61 (in Chinese with English abstract).
• [11] 曹惠锋，刘厚宁，杜鹏，等.鄂尔多斯盆地南缘双龙铀矿床地质特征及铀矿物类型探析[J].地质科技情报，2018,37(5):148-153.Cao H F,Liu H N,Du P,et al.Characteristics of Shuanglong Uranium Deposit and the types of uranium mineral in the southern margin of Ordos Basin[J].Geological Science and Technology Information,2018,37(5):148-153(in Chinese with English abstract).
• [12] 朱强，李建国，苗培森，等.鄂尔多斯盆地西南部洛河组储层特征和深部铀成矿地质条件[J].地球科学与环境学报，2019,41(6):675-690.Zhu Q,Li J G,Miao P S,et al.Reservoir characteristics of Luohe Formation and metallogenic geological conditions of deep uranium in the southwestern margin of Ordos Basin,China[J].Journal of Earth Sciences and Environment,2019,41(6):675-690 (in Chinese with English abstract).
• [13] 苗培森，陈印，程银行，等.中国北方砂岩型铀矿深部探测新发现及其意义[J].大地构造与成矿学，2020,44(4):563-575.Miao P S,Chen Y,Cheng Y H,et al.Newdeep exploration discoveries of sandstone-type uranium deposits in North China[J].Geotectonica et Metallogenia,2020,44(4):563-575 (in Chinese with English abstract).
• [14] 张天福，苗培森，程先钰，等.鄂尔多斯盆地早白垩世含铀岩系的新发现及其层序地层[J].大地构造与成矿学，2020,44(4):633-647.Zhang T F,Miao P S,Cheng X Y,et al.Stratigraphic characteristics of a newly discovered uranium-bearing stratum in the Lower Cretaceous,Ordos Basin[J].Geotectonica et Metallogenia,2020,44(4):633-647 (in Chinese with English abstract).
• [15] 赵华雷，李建国，苗培森，等.鄂尔多斯盆地西南缘彭阳铀矿区矿物学研究及其对区域成矿的指示[J].大地构造与成矿学，2020,44(4):607-618.Zhao H L,Li J G,Miao P S,et al.Mineralogical study of Pengyang Uranium Deposit and its significance of regional mineral exploration in southwestern Ordos Basin[J].Geotectonica et Metallogenia,2020,44(4):607-618 (in Chinese with English abstract).
• [16] 刘阳，王军礼，曹惠锋，等.鄂尔多斯盆地南缘双龙地区直罗组下段后生蚀变地球化学特征及其对铀成矿的制约[J].地质科技通报，2021,40(6):77-87.Liu Y,Wang J L,Cao H F,et al.Geochemical characteristics of epigenetic alteration and its constraints on mineralization in lower segment of Zhiluo Formation,Shuanglong area,southern Ordos Basin[J].Bulletin of Geological Science and Technology,2021,40(6):77-87 (in Chinese with English abstract).
• [17] 王龙辉，王贵，剡鹏兵.内蒙古鄂尔多斯市伊和乌素地区铀矿资源调查评价[R].内蒙古包头：核工业二○八大队，2019.Wang L H,Wang G,Yan P B.Investigation and evaluation of uranium resources in Yiheusu area,Ordos City,Inner Mongolia[R].Baotou,Inner Mongolia:Nuclear Industry Group 208,2019(in Chinese).
• [18] 孙圭，赵致和.中国北西部铀矿地质[R].西安：核工业西北地质局，1998.Sui G,Zhao Z H.Uranium geology in northwest China[R].Xi′an:Northwest Geological Bureau of Nuclear Industry,1998(in Chinese).
• [19] 杨友运.鄂尔多斯盆地白垩系沉积建造[J].石油与天然气地质，2006,27(2):167-172.Yang Y Y.Cretaceous sedimentary formation in Ordos Basin[J].Petroleum and Natural Gas Geology,2006,27(2):167-172(in Chinese with English abstract).
• [20] 党犇，赵虹，付金华.鄂尔多斯盆地沉积盖层构造裂缝特征研究[J].天然气工业，2005,25(7):14-16,2-3.Dang B,Zhao H,Fu J H.Study on structural fracture characteristics of sedimentary cover in Ordos Basin[J].Natural Gas Industry,2005,25(7):14-16,2-3(in Chinese with English abstract).
• [21] 齐骅，李国栋.鄂尔多斯盆地志丹群沉积时期的古沙漠盆地体系[J].西北地质科学，1996,17(1):63-90.Qi H,Li G D.The systems of palaeodesert basins in sedimentary period of Zhidan Group,Ordos Basin[J].Northwest Geoscience,1996,17(1):63-90(in Chinese with English abstract).
• [22] 李孝泽，董光荣，靳鹤龄，等.鄂尔多斯白垩系沙丘岩的发现[J].科学通报，1999,44(8):874-877.Li X Z,Dong G R,Jin H L,et al.Discovery of Cretaceous dune rocks in Ordos area[J].Chinese Science Bulletin,1999,44(8):874-877(in Chinese with English abstract).
• [23] 程守田，刘星，郭秀蓉，等.古沙漠沉积及其层序单元：以鄂尔多斯白垩纪内陆古沙漠盆地为例[J].地球科学：中国地质大学学报，2000,25(6):587-591.Cheng S T,Liu X,Guo X R,et al.Palaeo-desert deposition and sequence stratigraphic units:An example from Cretaceous continental palaeo desert basin in Ordos[J].Earth Science:Journal of China University of Geosciences,2000,25(6):587-591(in Chinese with English abstract).
• [24] 江新胜，潘忠习，谢渊，等.鄂尔多斯盆地白垩纪沙漠旋回、风向和水循环变化：白垩纪气候非均一性的证据[J].中国科学：地球科学，2004,34(7):649-657.Jiang X S,Pan Z X,Xie Y,et al.Variations of Cretaceous desert cycle,wind direction and water cycle in Ordos Basin:Evidences of Cretaceous climate heterogeneity[J].Scientia Sinica:Earth Sciences,2004,34(7):649-657 (in Chinese with English abstract).
• [25] 谢渊，王剑，李明辉，等.鄂尔多斯盆地早白垩世岩相古地理与地下水水质和分布的关系[J].地质通报，2004,23(11):1094-1102.Xie Y,Wang J,Li M H,et al.Relations of the Early Cretaceous lithofacies-paleogeography to groundwater quality and distribution in the Ordos Basin[J].Geological Bulletin of China,2004,23(11):1094-1102(in Chinese with English abstract).
• [26] 吴立群.鄂尔多斯盆地洛河组砂体空间结构分析与三维可视化建模[D].武汉：中国地质大学(武汉),2005.Wu L Q.Spatial structure analysis and 3D visualization modeling of sand body in Luohe Formation,Ordos Basin[D].Wuhan:China University of Geosciences(Wuhan),2005 (in Chinese with English abstract).
• [27] 焦养泉，朱培民，雷新荣，等.地学空间信息三维建模与可视化：鄂尔多斯盆地及相关领域的实践[M].北京：科学出版社，2006.Jiao Y Q,Zhu P M,Lei X R,et al.Three-dimensional modeling and visualization of geo-spatial information:Practice in Ordos Basin and related fields[M].Beijing:Science Press,2006(in Chinese).
• [28] Wu L,Jiao Y,Zhu P,et al.Architectural units and groundwater resource quantity evaluation of Cretaceous sandstones in the Ordos Basin,China[J].Acta Geologica Sinica:English Edition,2017,91(1):249-262.
• [29] 焦养泉，吴立群，荣辉，等.鄂尔多斯盆地北部下白垩统铀储层沉积学研究[R].武汉：中国地质大学(武汉),2021.Jiao Y Q,Wu L Q,Rong H,et al.Sedimentology of Lower Cretaceous uranium reservoir in northern Ordos Basin[R].Wuhan:China University of Geosciences(Wuhan),2021(in Chinese).
• [30] 彭云彪，陈安平，李子颖，等.东胜砂岩型铀矿床特殊性讨论[J].矿床地质，2006,25(增刊1):249-252.Peng Y B,Chen A P,Li Z Y,et al.Discussion on the particularity of sandstone-type uranium deposits in Dongsheng district[J].Geology of the Deposit,2006,25(S1):249-252(in Chinese with English abstract).
• [31] 席党鹏，万晓樵，李国彪，等.中国白垩纪综合地层和时间框架[J].中国科学：地球科学，2019,49(1):257-288.Xi D P,Wan X Q,Li G B,et al.Cretaceous integrated stratigraphy and time frame in China[J].Scientia Sinica:Earth Sciences,2019,49(1):257-288(in Chinese with English abstract).
• [32] 焦养泉，陈安平，王敏芳，等.鄂尔多斯盆地东北部直罗组底部砂体成因分析：砂岩型铀矿床预测的空间定位基础[J].沉积学报，2005,23(3):371-379.Jiao Y Q,Chen A P,Wang M F,et al.Genetic analysis of the bottom sandstone of Zhiluo Formation,northeastern Ordos Basin:Predictive base of spatial orientation of sandstone-type uranium deposit[J].Acta Sedimentologica Sinica,2005,23(3):371-379(in Chinese with English abstract).
• [33] 焦养泉，陈安平，杨琴，等.砂体非均质性是铀成矿的关键因素之一：鄂尔多斯盆地东北部铀成矿规律探讨[J].铀矿地质，2005,21(1):8-15.Jiao Y Q,Chen A P,Yang Q,et al.Sand body heterogeneity:One of the key factors of uranium metallogenesis in Ordos Basin[J].Uranium Geology,2005,21(1):8-15(in Chinese with English abstract).
• [34] 焦养泉，吴立群，杨琴.铀储层：砂岩型铀矿地质学的新概念[J].地质科技情报，2007,26(4):1-7.Jiao Y Q,Wu L Q,Yang Q.Uranium reservoir:A new concept of sandstone-type uranium deposits geology[J].Geological Science and Technology Information,2007,26(4):1-7 (in Chinese with English abstract).
• [35] 焦养泉，吴立群，荣辉，等.铀储层结构与成矿流场研究：揭示东胜砂岩型铀矿床成矿机理的一把钥匙[J].地质科技情报，2012,31(5):94-104.Jiao Y Q,Wu L Q,Rong H,et al.Uranium reservoir architecture and ore-forming flow field study:A key of revealing Dongsheng sandstone-type uranium deposit mineralization mechanism[J].Geological Science and Technology Information,2012,31(5):94-104 (in Chinese with English abstract).