浅析油气对松辽盆地南部姚家组砂岩型铀矿成矿的作用  

Primary studies on the role of oil-gas in sandstone type uranium mineralization of Yaojia formation in south Songliao basin

作　　者：张振强[1] 董文明[2] 佘新民[3] 景建安[3] 

机构地区：[1]核工业240研究所,辽宁沈阳110032 [2]核工业北京地质研究院,北京100029 [3]核工业243大队,内蒙古赤峰024006

出　　处：《铀矿地质》2008年第1期43-47,23,共6页Uranium Geology

摘　　要：松辽盆地南部姚家组铀矿化的岩石学、岩石化学、同位素、X衍射、包裹体特征分析表明,与铀矿关系密切的含油层位为下伏营城组和登娄库组。油气对铀矿成矿的作用表现为油气后生还原褪色蚀变形成局部还原障;形成黄铁矿、地沥青还原物质,提高砂体的还原能力;直接使铀矿沉淀富集。油气作为姚家组砂岩型铀矿成矿的主控矿因素之一,可用于找矿有利地段的预测。Studies on the characteristics of lithology, petrochemistry, isotope, X-ray diffraction, inclusions of rocks in the souther Songliao basin shows that uranium mineralization is closely related to oil hosting layer in Yingcheng formation and Denglouku formation. The role of oil-gas in uranium mineralization are as follows： forming local reducing barrier by fading alteration; forming reducing materials like pyrite and land asphalt, and increasing reducing sandbody which cause uranium concentration and precipitation. Therefore oil-gas can be regarded as one of the predominant uranium mineralization factors and can be used to predict prospective segment in sandstone type uranium exploration in south Songliao basin.

关 键 词：松辽盆地南部 油气 姚家组 砂岩型铀矿 

分 类 号：P619.14[天文地球—矿床学] P618.13[天文地球—地质学]