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塔里木盆地北缘断褶带层间氧化带发育样式及砂岩铀矿找矿潜力

鲁克改 王国荣 孙潇

鲁克改, 王国荣, 孙潇, 2019. 塔里木盆地北缘断褶带层间氧化带发育样式及砂岩铀矿找矿潜力. 地质力学学报, 25 (1): 115-124. DOI: 10.12090/j.issn.1006-6616.2019.25.01.011
引用本文: 鲁克改, 王国荣, 孙潇, 2019. 塔里木盆地北缘断褶带层间氧化带发育样式及砂岩铀矿找矿潜力. 地质力学学报, 25 (1): 115-124. DOI: 10.12090/j.issn.1006-6616.2019.25.01.011
LU Kegai, WANG Guorong, SUN Xiao, 2019. INTERLAYERED OXIDATION-ZONE STYLES IN FAULT-FOLD BELTS OF THE NORTHERN TARIM BASIN AND ITS CONTROLLING TO THE FORMATION OF SANDSTONE-TYPE URANIUM DEPOSITS. Journal of Geomechanics, 25 (1): 115-124. DOI: 10.12090/j.issn.1006-6616.2019.25.01.011
Citation: LU Kegai, WANG Guorong, SUN Xiao, 2019. INTERLAYERED OXIDATION-ZONE STYLES IN FAULT-FOLD BELTS OF THE NORTHERN TARIM BASIN AND ITS CONTROLLING TO THE FORMATION OF SANDSTONE-TYPE URANIUM DEPOSITS. Journal of Geomechanics, 25 (1): 115-124. DOI: 10.12090/j.issn.1006-6616.2019.25.01.011

塔里木盆地北缘断褶带层间氧化带发育样式及砂岩铀矿找矿潜力

doi: 10.12090/j.issn.1006-6616.2019.25.01.011
基金项目: 

国家自然科学基金委员会NSFC-新疆联合基金项目 U1403292

中国核工业地质局地勘费项 201702

详细信息
    作者简介:

    鲁克改(1965-), 男, 高级工程师, 从事铀成矿预测与选区。E-mail:lkg650104@163.com

  • 中图分类号: P913;P619.14

INTERLAYERED OXIDATION-ZONE STYLES IN FAULT-FOLD BELTS OF THE NORTHERN TARIM BASIN AND ITS CONTROLLING TO THE FORMATION OF SANDSTONE-TYPE URANIUM DEPOSITS

  • 摘要: 塔里木盆地北缘处于强断褶带,缺乏稳定平缓的斜坡带。以中侏罗统、上新统为主的砂岩型铀成矿目的层在断陷区、褶皱区发育不同的层间氧化带样式,形成的铀矿有所不同。已经发现的层间氧化带分为陡倾型和反转型。陡倾型层间氧化带定位于山间残留断陷盆地和山前断裂附近,多数地段氧化带已经剥蚀殆尽,局部有残留。反转型层间氧化带受盆内复背斜(或隆起)的抬升隆起影响使得层间氧化带发生反转掀斜,部分过渡带及铀异常体—矿体被剥蚀出地表。主要的铀矿体呈倒卷状,部分呈透镜状。综合分析表明,研究区铀成矿有利地段为断陷区、盆缘第一级褶皱露头区和隐伏的褶皱带。

     

  • 图  1  中侏罗统层间氧化带发育样式及可能的铀成矿部位

    1—白垩系-下更新统;2—中侏罗统;3—下侏罗统;4—三叠系(未确定);5—泥盆系-二叠系;6—泥盆系—石炭系;7—下元古界;8—华力西期花岗岩;9—砂岩层;10—地层接触线;11—推测的或被剥蚀的地层接触线;12—逆冲断裂;13—层间氧化带;14—推测的铀成矿部位;15—已经确定的铀成矿部位

    Figure  1.  Interlayered oxidation zone style developed in Middle Jurassic and locations of probable uranium mineralization area

    图  2  新近系库车组层间氧化带发育样式及可能的铀成矿部位

    1—第四系;2—库车组-第四系;3—库车组;4—古近系-中新统;5—三叠系-中新统;6—长城系-下二叠统;7—地层接触线;8—岩相界线、已经剥蚀的地层接触线;9—逆冲断裂;10—层间氧化带;11—推测的铀成矿部位;12—已经确定的铀成矿部位

    Figure  2.  Interlayered oxidation zone style developed in Pliocene Kuche Formation and locations of probable uranium mineralization area

    图  3  东塔里克矿点克孜勒努尔组灰色砂体及主要层间氧化带分布图

    1—第四系;2—吉迪克组b亚组;3—吉迪克组a亚组;4—库姆格列木组;5—卡普沙良群;6—恰克马克组;7—克孜勒努尔组;8—阳霞组;9—阿合组;10—星星峡群;11—石炭纪花岗岩;12—整合接触地质界线;13—角度不整合接触地质界线;14—逆冲断裂;15—张性断裂;16—性质不明断裂;17—地层产状;18—克孜勒努尔组主要灰色砂岩层;19—克孜勒努尔组砂岩编号;20—常年水系;21—季节性水系;22—居民点、煤矿;23—钻孔;24—铀异常钻孔;25—工业铀矿钻孔;26—推测k5砂岩层层间氧化带前锋线;27—推测k7砂岩层层间氧化带前锋线;28—推测k8砂岩层层间氧化带前锋线

    Figure  3.  Grey sandstone of the Kezilenuer Formation in East Talike uranium-mineralization point and the distribution of the main interlayered oxidation zones

    图  4  东塔里克矿点05号勘探线剖面图(上部)(据文献[1]修改)

    1—恰克马克组;2—克孜勒努尔组;3—灰色砂岩、含砾砂岩;4—灰色泥岩-粉砂岩;5—褐红色泥岩;6—克孜勒努尔组砂岩层编号;7—钻孔;8—褐红色、紫红色、浅紫红色层间氧化带;9—黄色层间氧化带;10—铀异常;11—铀矿体,12—地质界线

    Figure  4.  Upper part of the No.5 prospecting line section in East Talike mineralization point (modified after reference [1])

    图  5  西塔里克矿点65号勘探线剖面图(据文献[1]修改)

    1—克孜勒努尔组;2—灰色砂岩、含砾砂岩;3—灰色泥岩-粉砂岩;4—红色泥岩-粉砂岩;5—克孜勒努尔组砂岩层编号;6—地层接触线;7—被剥蚀的地层接触线;8—层间氧化带;9—钻孔;10—铀异常;11—铀矿化;12—铀矿体;13—推测的铀成矿部位

    Figure  5.  No.5 prospecting line section in West Talike mineralization point (modified after referenfce [1])

    图  6  托云盆地被断裂改造的反转型层间氧化带及其铀成矿部位示意剖面

    1—古近系-下更新统;2—古近系-上新统;3—古近系-中新统;4—克孜勒苏群;5—杨叶组与塔尔尕组并层;6—塔里特库里组;7—角度不整合接触地质界线;8—整合接触地质界线;9—已经剥蚀的地质界线;10—压性断裂;11—砂岩层;12—层间氧化带;13—已经确定的铀成矿部位;14—推测的铀成矿部位;15—钻孔;16—砂岩层编号

    Figure  6.  Interlayered oxidation zone transformed by faults in the Tuoyun Basin and schematic prefile of locations of the uranium mineralization area

    图  7  某矿床84号勘探线A8-1砂体氧化带及铀矿化剖面图(局部)

    1—库车组下部岩性段;2—砂岩、砂砾岩、砾岩;3—泥岩-粉砂岩;4—钻孔;5—A8-2砂体;6—A8-1砂体;7—A7-9砂体;8—A7-8砂体;9—层间氧化带;10—铀矿化;11—铀异常(品位小于0.010%)

    Figure  7.  Local No.84 prospecting line showing the oxidation zone of A8-1 sandstone body and uranium mineralization in X uranium deposit (local)

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  • 收稿日期:  2018-11-01
  • 修回日期:  2018-12-17
  • 刊出日期:  2019-02-28

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