文章摘要
张亮亮,荣辉,康世虎,蔡建芳,姜山,聂逢君,黄少华,宁君,王常东,马树松,刘佳林,景海钊,张宇航,宫天琦,蔺鹏飞,刘鑫,贺航航.松辽盆地南部中—新生代构造格架制约下砂岩型铀矿成矿模式与找矿标志[J].矿产勘查,2026,17(8):1416-1429
松辽盆地南部中—新生代构造格架制约下砂岩型铀矿成矿模式与找矿标志
Metallogenic model and prospecting indicator of sandstone-type uranium deposits constrained by Mesozoic-Cenozoic tectonic framework in southern Songliao Basin
投稿时间：2025-09-09  
DOI：10.20008/j.kckc.202608009
中文关键词: 松辽盆地  砂岩型铀矿  构造解析  成矿模式  找矿标志
英文关键词: Songliao Basin  sandstone-type uranium  tectonic analysis  metallogenic model  prospecting indicator
基金项目:本文受中国核工业地质局铀矿勘查项目(202212)、铀资源探采与核遥感全国重点实验室(东华理工大学)开放基金项目(2024QZ-KF-02)、稳定支持基金项目(ZS2403)联合资助。
作者单位
张亮亮 核工业二四三大队,内蒙古赤峰 024000 
荣辉 中国地质大学武汉湖北武汉 430074 
康世虎 核工业二四三大队,内蒙古赤峰 024000 
蔡建芳 核工业二四三大队,内蒙古赤峰 024000 
姜山 核工业二四三大队,内蒙古赤峰 024000 
聂逢君 东华理工大学,江西南昌 330013 
黄少华 核工业北京地质研究院北京 100029 
宁君 核工业二四三大队,内蒙古赤峰 024000 
王常东 核工业二四三大队,内蒙古赤峰 024000 
马树松 核工业二四三大队,内蒙古赤峰 024000 
刘佳林 核工业北京地质研究院北京 100029 
景海钊 核工业二四三大队,内蒙古赤峰 024000 
张宇航 核工业二四三大队,内蒙古赤峰 024000 
宫天琦 核工业二四三大队,内蒙古赤峰 024000 
蔺鹏飞 核工业二四三大队,内蒙古赤峰 024000 
刘鑫 核工业二四三大队,内蒙古赤峰 024000 
贺航航 核工业二四三大队,内蒙古赤峰 024000 
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中文摘要:
      构造是砂岩型铀矿形成的关键控制因素。然而，如何建立基于构造作用的有效找矿标志却极具挑战性。松辽盆地南部通辽地区姚家组和青山口组沉积大规模氧化砂岩，在原生还原不足的背景下接连取得勘探突破，多种迹象显示出后生改造的至关重要作用，是研究构造与铀成矿关系的良好案例。本文利用岩心、测井、地震及测试等资料，聚焦于对区域构造样式和构造演化历史解析，阐明构造格架制约下铀成矿模式和找矿标志。研究发现，断裂、洼陷与背斜构造对铀成矿起联合制约作用，尤其是先天还原不足的红层，构造耦合部位为次生铀矿体规模产出提供了充足储矿空间。在此基础上，创建了“构造格架约束下砂岩型铀矿多幕流体控矿”模式，“贯通断裂+洼陷单元+背斜/”指出提出了‘天窗’的构造找矿标志，“贯通断裂夹持的下洼-中坳-上隆”叠合部位利于成矿流体汇聚与大规模成矿作用发生。研究成果可以为地质条件相似地区的找矿预测提供依据。
英文摘要:
      Structure is a key controlling factor in the formation of sandstone-type uranium deposits. However,it is extremely challenging to establish an effective tectonic prospecting indicator for sandstone-type uranium depos.its. A number of large and medium-sized uranium deposits have been discovered in the Tongliao area of southernSongliao Basin, which is a good case to study the relationship between tectonic action and uranium mineralization.Therefore, this study focuses on the analysis of regional tectonic style and tectonic evolution history by using core,well log, seismic and testing data, and elucidates the uranium metallogenic model and prospecting indicator withinthe tectonic framework. It is found that, fault, depression and anticline structure play a joint restricting role in ura.nium mineralization. During the Early Cretaceous fault depression period, a large set of source rocks were depositedin the fault-controlled depression units, and abundant reducing agents were stored. In the Late Cretaceous and LatePaleogene compression inversion period, the fault clamping part was uplifted to form an anticline, the deep buriedtarget layer in the strong lifting part is eroded to form a 'skylight', which opened the laminated water drainage struc.ture, communicated the underlying oil and gas, as a result, hydrocarbons are reduced and altered on a large scale,and promoted the development of interlayer oxidation and hydrocarbon reduction. During the intermittent extensionperiod of the two extrusions, the thermal fluids were formed with the intrusion of the basic magma, which leads to hy.drothermal alteration and uranium mineralization. A variety of structural styles are involved in the process of ura.nium mineralization and are indispensable. Accordingly, a model of 'multi-curtain fluid control of sandstone-typeuranium deposits under the constraint of tectonic framework' was established. The structural prospecting indicatorof 'transfixion fault + depression unit + anticline or 'skylight' was created. It is pointed out that the superimposedpart of "the lower depression-middle depression-upper uplift clamped by the through fault" was conducive to theconvergence of ore-forming fluids and the occurrence of large-scale mineralization, and should be regarded as thekey part of the red basin exploration. The research results can provide a basis for prospecting prediction in SongliaoBasin.
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