| 松辽盆地北部姚家组沉积特征及铀成矿条件 |
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| 引用本文： | 马文娟.松辽盆地北部姚家组沉积特征及铀成矿条件[J].地质与资源,2013,22(2):81-85. |
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| 作者姓名： | 马文娟 |
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| 作者单位： | 大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712 |
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| 基金项目： | 大庆油田科技攻关项目“松辽盆地北部砂岩型铀矿成矿条件及有利区带预测”(Q/DYYKY1.6-2-2011)资助 |
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| 摘 要： | 从基础地质条件出发，全面分析了松辽盆地北部姚家组铀成矿条件，认为该组广泛发育河流、三角洲相带，为铀成矿流体提供了疏导通道和储存空间.环绕盆地西、北、东缘的3条富铀花岗岩山脉，是良好的铀源.受燕山运动和喜马拉雅运动的影响，在挤压应力体制下形成的构造剥蚀天窗附近，是铀富集的有利区域.盆地水文地质条件较好，具备渗入型自流水盆地特征.姚家组沉积时，主要为干旱、半干旱或温热的古气候环境，有利于地层中铀的预富集或同生沉积成矿.
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| 关 键 词： | 沉积相 砂岩型铀矿 水文地质 古气候 松辽盆地 |
| 收稿时间： | 2012-03-27 |
SEDIMENTARY CHARACTERISTICS AND URANIUM MINERALIZATION OF THE YAOJIA FORMATION IN NORTHERN SONGLIAO BASIN |
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| MA Wen-juan.SEDIMENTARY CHARACTERISTICS AND URANIUM MINERALIZATION OF THE YAOJIA FORMATION IN NORTHERN SONGLIAO BASIN[J].Geology and Resources,2013,22(2):81-85. |
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| Authors: | MA Wen-juan |
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| Institution: | Institute of Exploration and Development, Daqing Oilfield Co., Ltd., Daqing 163712, Heilongjiang Province, China |
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| Abstract: | On the basis of geologic conditions,this article analyses the uranium metallogenic conditions of the Yaojia Formation in the northern part of Songliao Basin.The investigation shows that extensively developed rivers and deltas in Yaojia Formation form passways and reserve space for uranium metallogenic fluids.The three mountains with uraniumrich granite,which surround the Songliao Basin in south,north and east,serve as uranium source.The areas near the structural denudation windows,which were formed by the compressive stress from Yanshanian orogeny and Himalayan orogeny,are favorable for the enrichment of uranium.The basin,characterized by infiltration type of artesian basin,has a good hydrogeological condition.During the sedimentation of Yaojia Formation,the paleo-environment was mainly presented in arid,semi-arid or warm climate,which is helpful for the pre-enrichment or syndepositional mineralization of uranium in the strata. |
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| Keywords: | sedimentary facies sandstone-type uranium hydrogeology Paleo-environment Songliao Basin |
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