浅析松辽盆地南部姚下段灰色砂体与铀成矿关系
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摘要
松辽盆地南部姚家组沉积早期古气候以干旱-半干旱条件为主,姚下段砂体多为原生红色沉积,理论上制约了还原性灰色砂体(赋矿砂体)的发育,以致长期困扰着本区找矿工作者寻找有利的氧化-还原过渡带。通过对已发现的姚下段灰色砂体空间展布、岩石学、镜下观察、样品统计等方面进行宏、微观特征研究,分析其原生与后生成因特点,提出不同地段灰色砂体主控因素有所不同,进一步推测本区灰色砂体的空间展布规律及其主要分布区域,指出下一步寻找本区有利灰色砂体的建议。
The early sedimentary paleoclimate of Yaojia formation in the south of Songliao basin was dominated by arid and semi-arid conditions,and the lower sand body of Yaojia formation was mostly primary red sedimentary, which restricted the existence of reductive grey sand body(ore-bearing sand body) theoretically, so that the miners in this area were puzzled for a long time to seek favorable oxygen-reduction transition zone. The author tries to analyze the macro and micro characteristics of the gray sand bodies in the lower section of Yaojia formation through the spatial distribution, petrology, microscopic observation and sample statistics. The spatial distribution pattern and main distribution area of grey sand body in this area were further speculated. The main controlling factors of grey sand body are different in different areas. The spatial distribution pattern and main distribution area of grey sand body in this area were further speculated. Based on the above analysis, the next step is to find the favorable grey sand body. The relation between grey sand body and uranium mineralization is discussed in order to solve the practical problems in the course of searching for sandstone uranium deposit in this area.
The early sedimentary paleoclimate of Yaojia formation in the south of Songliao basin was dominated by arid and semi-arid conditions,and the lower sand body of Yaojia formation was mostly primary red sedimentary, which restricted the existence of reductive grey sand body(ore-bearing sand body) theoretically, so that the miners in this area were puzzled for a long time to seek favorable oxygen-reduction transition zone. The author tries to analyze the macro and micro characteristics of the gray sand bodies in the lower section of Yaojia formation through the spatial distribution, petrology, microscopic observation and sample statistics. The spatial distribution pattern and main distribution area of grey sand body in this area were further speculated. The main controlling factors of grey sand body are different in different areas. The spatial distribution pattern and main distribution area of grey sand body in this area were further speculated. Based on the above analysis, the next step is to find the favorable grey sand body. The relation between grey sand body and uranium mineralization is discussed in order to solve the practical problems in the course of searching for sandstone uranium deposit in this area.
引文
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夏毓亮,林锦荣,李子颖,等.2003.松辽盆地钱家店凹陷砂岩型铀矿评价预测和成矿规律研究[J].中国核科技报告,3:5-10.
夏毓亮.2015.钱家店铀矿床[M].北京:中国原子能出版社:165.
于文斌,董清水,周连永,等. 2008.松辽盆地南部断裂反转构造对砂岩型铀矿成矿的作用[J].铀矿地质,24(4):195-200.
张振强,赵忠华,杨冰,等.2009.松辽盆地南部白兴吐地区油气后生还原对铀成矿的作用[J].铀矿地质,25(5):290-295.
郑纪伟.2010.开鲁盆地钱家店铀矿床成矿地质条件及勘探潜力分析[J].铀矿地质,26(4):193-200.
① 蔡建芳,宫文杰,宁君,等.2012.内蒙古通辽市宝龙山地区地浸砂岩型铀矿普查[R].赤峰:核工业二四三大队:111-165.
蔡煜琦,李胜祥.2008.钱家店铀矿床含矿地层—姚家组沉积环境分析[J].铀矿地质,24(2):66-72.
陈晓林,方锡珩,郭庆银,等.2008.对松辽盆地钱家店凹陷铀成矿作用的重新认识[J].地质学报,82(4):553-561.
董文明, 林锦荣, 夏毓亮,等.2007.松辽盆地西南部上白垩统层序地层特征与砂岩型铀成矿作用[J].世界核地质科学, 24(3):125-135.
黄清华,郑玉龙,杨明杰,等.1999.松辽盆地白垩纪古气候研究[J].微体古生物学报,16(1):95-103.
罗毅,马汉峰,夏毓亮,等.2007.松辽盆地钱家店铀矿床成矿作用特征与成矿模式[J].铀矿地质,23(4):194-200.
庞雅庆,陈晓林,方锡珩,等.2010.松辽盆地钱家店层间氧化与铀成矿作用[J].铀矿地质,26(1):9-16.
吴仁贵,蔡建芳,于振清,等.2011. 松辽盆地白兴吐铀矿床热液蚀变及物质组成研究[J].铀矿地质,27(2):74-80.
吴仁贵,徐喆,宫文杰,等.2012.松辽盆地白兴吐铀矿床成因讨论[J].铀矿地质,28(3):142-147.
夏毓亮,林锦荣,李子颖,等.2003.松辽盆地钱家店凹陷砂岩型铀矿评价预测和成矿规律研究[J].中国核科技报告,3:5-10.
夏毓亮.2015.钱家店铀矿床[M].北京:中国原子能出版社:165.
于文斌,董清水,周连永,等. 2008.松辽盆地南部断裂反转构造对砂岩型铀矿成矿的作用[J].铀矿地质,24(4):195-200.
张振强,赵忠华,杨冰,等.2009.松辽盆地南部白兴吐地区油气后生还原对铀成矿的作用[J].铀矿地质,25(5):290-295.
郑纪伟.2010.开鲁盆地钱家店铀矿床成矿地质条件及勘探潜力分析[J].铀矿地质,26(4):193-200.
① 蔡建芳,宫文杰,宁君,等.2012.内蒙古通辽市宝龙山地区地浸砂岩型铀矿普查[R].赤峰:核工业二四三大队:111-165.