鄂尔多斯盆地西缘环县地区直罗组沉积相及其与铀矿化的关系
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摘要
含矿层沉积相及沉积砂体是控制铀矿化的重要因素之一,综合利用钻井岩芯观察、岩石薄片分析、测井等资料,编制典型钻孔柱状图、地层厚度、砂岩厚度及砂岩百分含量图等,对环县地区直罗组沉积相及其对铀矿化的关系进行研究。结果表明:环县地区直罗组早期以辫状河沉积为主,发育辫状河道和泛滥平原等沉积微相;晚期为曲流河沉积,发育河道、河漫滩、天然堤等沉积微相。沉积相对该区铀成矿具有明显的控制作用:辫状河道为铀矿化富集最有利部位;砂体厚度及沉积微相控制着铀矿化的空间展布,主要分布在辫状河道的边部砂体减薄的地带及与泛滥平原相变地带。
The sedimentary facies and sands are important factors that controlled the uranium mineralization.The sedimentary facies of the Zhiluo formation and the relationship with uranium mineralization in the Huanxian Area were studied based on drilling core observation,analysis of well logging,thin section and mapping of stratum thickness,sandstone thickness,percent-age of sandstone. The results indicate that the main sedimentary facies of lower Zhiluo formationa are braided river include distributary channel and flood plain,while that of the later Zhiluo formationa are mainly meandering river include distributary channel,alluvial flat and natural levee. The uranium mineralization is mainly controlled by sedimentary facies,braided channel creates the favourable setting for uranium deposition; The distribution of uranium sand caused by changes of sedimentary microfacies and sand thicker,enrichment of uranium are braided channel where the sand body is thinner,and facies change zones with fiood plain.
The sedimentary facies and sands are important factors that controlled the uranium mineralization.The sedimentary facies of the Zhiluo formation and the relationship with uranium mineralization in the Huanxian Area were studied based on drilling core observation,analysis of well logging,thin section and mapping of stratum thickness,sandstone thickness,percent-age of sandstone. The results indicate that the main sedimentary facies of lower Zhiluo formationa are braided river include distributary channel and flood plain,while that of the later Zhiluo formationa are mainly meandering river include distributary channel,alluvial flat and natural levee. The uranium mineralization is mainly controlled by sedimentary facies,braided channel creates the favourable setting for uranium deposition; The distribution of uranium sand caused by changes of sedimentary microfacies and sand thicker,enrichment of uranium are braided channel where the sand body is thinner,and facies change zones with fiood plain.
引文
1易超,韩效忠,李西得,等.鄂尔多斯盆地东北部直罗组砂岩岩石学特征与铀矿化关系研究[J].高校地质学报,2014,20(2):185-197Yi Chao,Han Xiaozhong,Li Xide,et al. Study on sandstone petrologic feature of the Zhiluo formation and its controls on uranium mineralization in Northeastern Ordos Basin[J]. Geological Journal of China Universities,2014,20(2):185-197
2 金若时,程银行,李建国,等.中国北方晚中生代陆相盆地红-黑岩系耦合产出对砂岩型铀矿成矿环境的制约[J].中国地质,2017,44(2):205-223Jin Ruoshi,Cheng Yinhang,Li Jianguo,et al. Late Mesozoic continental basin“red and black beds”coupling formation constraints on the sandstone uranium mineralization in northern China[J]. Geology China,2017,44(2):205-233
3 孙立新,张云,张天福,等.鄂尔多斯盆地北部侏罗系延安组、直罗组孢粉化石及其古气候意义[J].地学前缘,2017,24(1):32-51Sun Lixin,Zhang Yun,Zhang Tianfu,et al. Jurassic of Yan'an formation and Zhiluo Formation in the northeastern Ordos Basin,and its paleoclimatic significance[J]. Earth Science Forntiers,2017,24(1):32-51
4 张龙,吴柏林,刘池阳,等.鄂尔多斯盆地北部砂岩型铀矿直罗组物源分析及其铀成矿意义[J].地质学报,2016,90(12):3441-3453Zhang Long,Wu Bolin,Liu Chiyang,et al. Provenance analysis of the Zhiluo formation in the sandstone-hosted uranium deposits of the Northern Ordos Basin and implications for uranium mineralization[J]. Acta Geologica Sinica,2016,90(12):3441-3453
5 赵宏刚,欧光习.鄂尔多斯盆地东胜地区沉积体系与砂岩型铀成矿[J].铀矿地质,2006,22(3):136-142Zhao Honggang,Ou Guangxi. The relationship between depositional system and ore-formation of sandstone-type uranium deposits in Dongsheng Area,Ordos Basin[J]. Uranium Geology,2006,22(3):136-142
6 赵俊峰,刘池阳,赵建设,等.鄂尔多斯盆地侏罗系直罗组沉积相及其演化[J].西北大学学报(自然科学版),2008,38(3):480-485Zhao Junfeng,Liu Chiyang,Zhao Jianshe,et al. Sedimentary facies and its evolution of Jurassic Zhiluo formation in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2008,38(3):480-485
7 张鹏飞,聂逢君,张成勇,等.伊犁盆地郎卡地区铀矿目的层砂岩特征及成矿意义[J].科学技术与工程,2018,18(9):29-38Zhang Pengfei,Nie Fengjun,Zhang Chengyong,et al. Characteristics and its implications for the mineralization of the sandstone from uranium-bearing target layer in Langka,Yili Basin[J]. Science Technology and Engineering,2018,18(9):29-38
8 杨晓勇,凌明星,赖小东.鄂尔多斯盆地东胜地区地浸砂岩型铀矿成矿模型[J].地学前缘,2009,16(2):239-247Yang Xiaoyong,Ling Mingxing,Lai Xiaodong. Metallogenic model of the Dongsheng insitu leaching sandstone-type uranium deposit in the Ordos Basin[J]. Earth Science Forntiers,2009,16(2):239-247
9 李子颖,方锡珩,陈安平,等.鄂尔多斯盆地东北部砂岩型铀矿叠合成矿模式[J].铀矿地质,2009,25(2):65-70Li Ziying,Fang Xiheng,Chen Anping,et al. Superposition metallogenic model of sandstone-type uranium deposit in the Northeastern Ordos Basin[J]. Uranium Geology,2009,25(2):65-70
10 李保侠,刘坤鹏.鄂尔多斯惠安堡逆冲断褶带式砂岩型铀矿矿化特征及成矿模式[J].东华理工大学学报(自然科学版),2013,36(增刊2):1-8Li Baoxia,Liu Kunpeng. Sandstone type uranium mineralization characteristics and metallogenic model of the thrust fault fold belt in Hui'anbu of Ordos[J]. Journal of East China Institue of Technology,2013,36(S2):1-8
11 王善博,杨君,李建国,等.鄂尔多斯盆地西缘宁东地区侏罗系含铀地层元素地球化学特征[J].煤田地质与勘探,2018,46(6):19-25Wang Shanbo,Yang Jun,Li Jianguo,et al. Elemental geochemical characteristics of Jurassic uranium bearing strata in Ningdong Area,western Ordos basin[J]. Coal Geology&Exploration,2018,46(6):19-25
12 汤超,朱强,冯晓曦,等.内蒙古东胜大型砂岩型铀矿床稀土元素地球化学研究[J].矿物学报,2017,37(1-2):121-131Tang Chao,Zhu Qiang,Feng Xiaoxi,et al. REE geochemical study on Dongsheng sandstone uranium deposit,Inner Mongolia,China[J]. Acta Mineralogica Sinica,2017,37(1-2):121-131
13 薛锐,赵俊峰,闫占东,等.鄂尔多斯盆地北部侏罗系直罗组沉积特征与演化[J].古地理学报,2017,19(4):692-702Xue Rui,Zhao Junfeng,Yan Zhandong,et al. Sedimentary characteristics and evolution of the Jurassic Zhiluo Formation in northern Ordos Basin[J]. Journal of Palaeogeoraph,2017,19(4):692-702
14 张云,孙立新,张天福,等.鄂尔多斯盆地东北缘煤铀岩系层序地层与煤铀赋存规律研究[J].地质学报,2016,12(90):3424-3440Zhang Yun,Sun Lixin,Zhang Tianfu,et al. Sequence stratigraphy study of coal-uranium Bearing Rock series and occurrence regularity coal and uanium in the Northeastern Margin of Ordos Basin[J]. Acta Geologica Sinca,2016,12(90):3423-3440
15 张字龙,韩效忠,李胜祥,等.鄂尔多斯盆地东北部中侏罗统直罗组下段沉积相及其对铀成矿的控制作用[J].古地理学报,2010,6(12):749-758Zhang Zilong,Han Xiaozhong,Li Shengxiang,et al. Sedimentary facies of the lower part of Middle Jurassic Zhiluo formation in northeastern Ordos Basin and its control sonuranium mineralization[J].Journal of Palaeogeoraph,2010,6(12):749-758
16 韩效忠,张字龙,姚春玲,等.鄂尔多斯盆地东北部砂岩型铀成矿模式研究[J].铀矿地质,2008,27(3):415-422Han Xiaozhong,Zhang Zilong,Yao Chunling,et al. Discussion on metallogenic model for sandstone-hosted uranium deposits in northeastern Ordos Basin[J]. Mineral Deposits, 2008, 27(3):415-422
17 陈印,冯晓曦,陈路路,等.鄂尔多斯盆地东北部直罗组内碎屑锆石和铀矿物赋存形式简析及其对铀源的指示[J].中国地质,44(6):1190-1206Chen Yin,Feng Xiaoxi,Chen Lulu,et al. Ananalysis of U-Pb dating of detrital zircons and modes of occurrence of uranium minerals in the Zhiluo formation of northeastern Ordos Basin and their indication to uranium sources[J]. Geology China,44(6):1190-1206
18 付国民,郑荣才,赵俊兴,等.鄂尔多斯盆地环县地区延安组高分辨率层序地层学特征[J].中国矿业大学学报,2005,34(3):294-299Fu Guomin,Zheng Rongcai,Zhao Junxin,et al. High resolution sequence st ratigraphic characteristics of Yanan Formation InHuanxian county of Ordos Basin[J]. Jour nal of China University of Mining&Technology,2005,34(3):294-299
19 刘化清,廖建波,房乃珍,等.鄂尔多斯盆地环县地区长6沉积体系展布特征[J].沉积学报,2005,23(4):584-588Liu Huaqing,Liao Jianbo,Fang Naizhen,et al. Distribution characteristics of the Chang 6 sedmientary system(Triassic)in Huanxian Area,Ordos Basin[J]. Acta Sedimentologica Sinica,2005,23(4):584-588
20 马永辉.甘肃环县西部地质构造及控煤作用[J].煤田地质与勘探,2010,38(4):12-15Ma Yonghui. Geological structural and coal control pattern in the west of Huanxian,Gansu[J]. Coalgeology&Exploration,2010,38(4):12-15
21 赵俊峰,刘池洋,赵建设,等.鄂尔多斯盆地侏罗系直罗组沉积相及其演化[J].西北大学学报(自然科学版),2008,38(3):480-486Zhao Junfeng,Liu Chiyang,Zhao Jianshe,et al. Sedimentary facies and its evolution of Jurassic Zhiluo formation in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2008,38(3):480-486
22 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):371-379Jiao Yangquan,Chen Anping,Wang Minfang,et al. Genetic analysis of the bottom sandstone of Zhiluo formation,northeastern Ordos basin:Predictive base of spatial orientationof sandstone-type uranium deposit[J]. Acta Sedimentologica Sinica,2005,23(3):371-379
23 吴仁贵,余达淦.辫状沉积砂体与砂岩型铀矿的关系剖析[J].铀矿地质,2005,19(2):92-96,104Wu Rengui,Yu Dagan. Discussion on relationship between sandbody of braided stream channel sandstone-type uranium deposit[J].Uranium Geology,2005,19(2):92-96,104
2 金若时,程银行,李建国,等.中国北方晚中生代陆相盆地红-黑岩系耦合产出对砂岩型铀矿成矿环境的制约[J].中国地质,2017,44(2):205-223Jin Ruoshi,Cheng Yinhang,Li Jianguo,et al. Late Mesozoic continental basin“red and black beds”coupling formation constraints on the sandstone uranium mineralization in northern China[J]. Geology China,2017,44(2):205-233
3 孙立新,张云,张天福,等.鄂尔多斯盆地北部侏罗系延安组、直罗组孢粉化石及其古气候意义[J].地学前缘,2017,24(1):32-51Sun Lixin,Zhang Yun,Zhang Tianfu,et al. Jurassic of Yan'an formation and Zhiluo Formation in the northeastern Ordos Basin,and its paleoclimatic significance[J]. Earth Science Forntiers,2017,24(1):32-51
4 张龙,吴柏林,刘池阳,等.鄂尔多斯盆地北部砂岩型铀矿直罗组物源分析及其铀成矿意义[J].地质学报,2016,90(12):3441-3453Zhang Long,Wu Bolin,Liu Chiyang,et al. Provenance analysis of the Zhiluo formation in the sandstone-hosted uranium deposits of the Northern Ordos Basin and implications for uranium mineralization[J]. Acta Geologica Sinica,2016,90(12):3441-3453
5 赵宏刚,欧光习.鄂尔多斯盆地东胜地区沉积体系与砂岩型铀成矿[J].铀矿地质,2006,22(3):136-142Zhao Honggang,Ou Guangxi. The relationship between depositional system and ore-formation of sandstone-type uranium deposits in Dongsheng Area,Ordos Basin[J]. Uranium Geology,2006,22(3):136-142
6 赵俊峰,刘池阳,赵建设,等.鄂尔多斯盆地侏罗系直罗组沉积相及其演化[J].西北大学学报(自然科学版),2008,38(3):480-485Zhao Junfeng,Liu Chiyang,Zhao Jianshe,et al. Sedimentary facies and its evolution of Jurassic Zhiluo formation in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2008,38(3):480-485
7 张鹏飞,聂逢君,张成勇,等.伊犁盆地郎卡地区铀矿目的层砂岩特征及成矿意义[J].科学技术与工程,2018,18(9):29-38Zhang Pengfei,Nie Fengjun,Zhang Chengyong,et al. Characteristics and its implications for the mineralization of the sandstone from uranium-bearing target layer in Langka,Yili Basin[J]. Science Technology and Engineering,2018,18(9):29-38
8 杨晓勇,凌明星,赖小东.鄂尔多斯盆地东胜地区地浸砂岩型铀矿成矿模型[J].地学前缘,2009,16(2):239-247Yang Xiaoyong,Ling Mingxing,Lai Xiaodong. Metallogenic model of the Dongsheng insitu leaching sandstone-type uranium deposit in the Ordos Basin[J]. Earth Science Forntiers,2009,16(2):239-247
9 李子颖,方锡珩,陈安平,等.鄂尔多斯盆地东北部砂岩型铀矿叠合成矿模式[J].铀矿地质,2009,25(2):65-70Li Ziying,Fang Xiheng,Chen Anping,et al. Superposition metallogenic model of sandstone-type uranium deposit in the Northeastern Ordos Basin[J]. Uranium Geology,2009,25(2):65-70
10 李保侠,刘坤鹏.鄂尔多斯惠安堡逆冲断褶带式砂岩型铀矿矿化特征及成矿模式[J].东华理工大学学报(自然科学版),2013,36(增刊2):1-8Li Baoxia,Liu Kunpeng. Sandstone type uranium mineralization characteristics and metallogenic model of the thrust fault fold belt in Hui'anbu of Ordos[J]. Journal of East China Institue of Technology,2013,36(S2):1-8
11 王善博,杨君,李建国,等.鄂尔多斯盆地西缘宁东地区侏罗系含铀地层元素地球化学特征[J].煤田地质与勘探,2018,46(6):19-25Wang Shanbo,Yang Jun,Li Jianguo,et al. Elemental geochemical characteristics of Jurassic uranium bearing strata in Ningdong Area,western Ordos basin[J]. Coal Geology&Exploration,2018,46(6):19-25
12 汤超,朱强,冯晓曦,等.内蒙古东胜大型砂岩型铀矿床稀土元素地球化学研究[J].矿物学报,2017,37(1-2):121-131Tang Chao,Zhu Qiang,Feng Xiaoxi,et al. REE geochemical study on Dongsheng sandstone uranium deposit,Inner Mongolia,China[J]. Acta Mineralogica Sinica,2017,37(1-2):121-131
13 薛锐,赵俊峰,闫占东,等.鄂尔多斯盆地北部侏罗系直罗组沉积特征与演化[J].古地理学报,2017,19(4):692-702Xue Rui,Zhao Junfeng,Yan Zhandong,et al. Sedimentary characteristics and evolution of the Jurassic Zhiluo Formation in northern Ordos Basin[J]. Journal of Palaeogeoraph,2017,19(4):692-702
14 张云,孙立新,张天福,等.鄂尔多斯盆地东北缘煤铀岩系层序地层与煤铀赋存规律研究[J].地质学报,2016,12(90):3424-3440Zhang Yun,Sun Lixin,Zhang Tianfu,et al. Sequence stratigraphy study of coal-uranium Bearing Rock series and occurrence regularity coal and uanium in the Northeastern Margin of Ordos Basin[J]. Acta Geologica Sinca,2016,12(90):3423-3440
15 张字龙,韩效忠,李胜祥,等.鄂尔多斯盆地东北部中侏罗统直罗组下段沉积相及其对铀成矿的控制作用[J].古地理学报,2010,6(12):749-758Zhang Zilong,Han Xiaozhong,Li Shengxiang,et al. Sedimentary facies of the lower part of Middle Jurassic Zhiluo formation in northeastern Ordos Basin and its control sonuranium mineralization[J].Journal of Palaeogeoraph,2010,6(12):749-758
16 韩效忠,张字龙,姚春玲,等.鄂尔多斯盆地东北部砂岩型铀成矿模式研究[J].铀矿地质,2008,27(3):415-422Han Xiaozhong,Zhang Zilong,Yao Chunling,et al. Discussion on metallogenic model for sandstone-hosted uranium deposits in northeastern Ordos Basin[J]. Mineral Deposits, 2008, 27(3):415-422
17 陈印,冯晓曦,陈路路,等.鄂尔多斯盆地东北部直罗组内碎屑锆石和铀矿物赋存形式简析及其对铀源的指示[J].中国地质,44(6):1190-1206Chen Yin,Feng Xiaoxi,Chen Lulu,et al. Ananalysis of U-Pb dating of detrital zircons and modes of occurrence of uranium minerals in the Zhiluo formation of northeastern Ordos Basin and their indication to uranium sources[J]. Geology China,44(6):1190-1206
18 付国民,郑荣才,赵俊兴,等.鄂尔多斯盆地环县地区延安组高分辨率层序地层学特征[J].中国矿业大学学报,2005,34(3):294-299Fu Guomin,Zheng Rongcai,Zhao Junxin,et al. High resolution sequence st ratigraphic characteristics of Yanan Formation InHuanxian county of Ordos Basin[J]. Jour nal of China University of Mining&Technology,2005,34(3):294-299
19 刘化清,廖建波,房乃珍,等.鄂尔多斯盆地环县地区长6沉积体系展布特征[J].沉积学报,2005,23(4):584-588Liu Huaqing,Liao Jianbo,Fang Naizhen,et al. Distribution characteristics of the Chang 6 sedmientary system(Triassic)in Huanxian Area,Ordos Basin[J]. Acta Sedimentologica Sinica,2005,23(4):584-588
20 马永辉.甘肃环县西部地质构造及控煤作用[J].煤田地质与勘探,2010,38(4):12-15Ma Yonghui. Geological structural and coal control pattern in the west of Huanxian,Gansu[J]. Coalgeology&Exploration,2010,38(4):12-15
21 赵俊峰,刘池洋,赵建设,等.鄂尔多斯盆地侏罗系直罗组沉积相及其演化[J].西北大学学报(自然科学版),2008,38(3):480-486Zhao Junfeng,Liu Chiyang,Zhao Jianshe,et al. Sedimentary facies and its evolution of Jurassic Zhiluo formation in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2008,38(3):480-486
22 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):371-379Jiao Yangquan,Chen Anping,Wang Minfang,et al. Genetic analysis of the bottom sandstone of Zhiluo formation,northeastern Ordos basin:Predictive base of spatial orientationof sandstone-type uranium deposit[J]. Acta Sedimentologica Sinica,2005,23(3):371-379
23 吴仁贵,余达淦.辫状沉积砂体与砂岩型铀矿的关系剖析[J].铀矿地质,2005,19(2):92-96,104Wu Rengui,Yu Dagan. Discussion on relationship between sandbody of braided stream channel sandstone-type uranium deposit[J].Uranium Geology,2005,19(2):92-96,104
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