CAJ | 학술논문

头屯河组是伊犁盆地近年来发现的砂岩型含铀矿层位。通过对盆地南缘洪海沟铀矿床头屯河组重要的控矿因素———岩性岩相特征进行系统分析，找出其独特的成矿规律，为该地区的铀找矿工作提供重要的理论依据。根据研究区头屯河组的岩性特征、砂体发育特征、砂地比平面展布特征，结合区域沉积体系演化特征，分析认为头屯河组在研究区主要为1条近东西向展布的主河道，河道两侧为河漫滩，河漫滩外侧为洪泛平原。在主河道的局部位置，砂体变薄，为河心泥滩沉积。沉积时期的沉积环境、河心泥滩的发育、沉积微相的相变对铀成矿有着重要的控制作用，而含矿流体垂直于河道方向渗流并最终形成工业铀矿体，是头屯河组有别于其他含矿层位、独特的铀成矿模式。
두둔하조시이리분지근년래발현적사암형함유광층위。통과대분지남연홍해구유광상두둔하조중요적공광인소———암성암상특정진행계통분석，조출기독특적성광규률，위해지구적유조광공작제공중요적이론의거。근거연구구두둔하조적암성특정、사체발육특정、사지비평면전포특정，결합구역침적체계연화특정，분석인위두둔하조재연구구주요위1조근동서향전포적주하도，하도량측위하만탄，하만탄외측위홍범평원。재주하도적국부위치，사체변박，위하심니탄침적。침적시기적침적배경、하심니탄적발육、침적미상적상변대유성광유착중요적공제작용，이함광류체수직우하도방향삼류병최종형성공업유광체，시두둔하조유별우기타함광층위、독특적유성광모식。
Toutunhe formation is the new-discovered stratum bearing sandstone-type uranium ore in Yili Basin in recent years. The lithology-lithophase characteristics that are the important ore-controlling factors of Tountunhe formation of Honghai-gou uranium deposit in southern margin of Yili Basin is analyzed systemically so as to discover its special metallogenic regulari-ty and to provide important theoretical evidence for the following uranium exploration work in Yili Basin. According to the char-acteristics of lithology,development of sandbody,and the ratio of sand to stratum,and combing with the evolution of regional sedimentary sysyem,it is concluded that,Toutunhe formation is a main channel along west to east. Both sides of the channel is the flood land,and outside of the flood land is the floodplain. In the local area of the main channel,the sandbody becomes thin-ner,and the sandbody is the mudflat deposition in the middle of channel. The sedimentary environment in the sedimentary peri-od,the development of mudflat in the middle of channel and the phase change of sedimentary micro-phase are the important ore-controlling factors for uranium mineralization. The ore-bearing fluid that is perpendicular to the direction of the channel seeps and forms the industrial uranium orebody eventually,which is the special metallogenic model compared with other ore-bearing stratum in Yili Basin.