CAJ | 학술논문

根据黄陇侏罗纪煤田主采煤层煤质资料和研究成果,对煤中常量元素和微量元素的含量进行了统计分析,探讨了煤中各元素形成的地质因素,并对铀含量富集特征及有利成矿区进行了分析.研究显示,黄陇侏罗纪煤田形成于陆源物质供给较丰富的干旱弱还原泥炭沼泽环境中,煤中微量元素Ga、Ge、V、As等属正常含量水平,Cl、F、P属低含量水平,U含量明显高于全国值.由于盆地边缘造山运动提供了丰富的铀源、有机流体及输导体系,使得U含量由盆地边缘向中心逐渐减小,其中处于氧化还原环境的永陇矿区、旬耀矿区有利于铀矿的形成.
근거황롱주라기매전주채매층매질자료화연구성과,대매중상량원소화미량원소적함량진행료통계분석,탐토료매중각원소형성적지질인소,병대유함량부집특정급유리성광구진행료분석.연구현시,황롱주라기매전형성우륙원물질공급교봉부적간한약환원니탄소택배경중,매중미량원소Ga、Ge、V、As등속정상함량수평,Cl、F、P속저함량수평,U함량명현고우전국치.유우분지변연조산운동제공료봉부적유원、유궤류체급수도체계,사득U함량유분지변연향중심축점감소,기중처우양화환원배경적영롱광구、순요광구유리우유광적형성.
Based on Huanglong Jurassic coalfield main mineable coal seams coal quality data and studied results, carried out statistical analysis of content of major elements and trace elements in coal, discussed genetic geological factors of elements, especially analyzed uranium content enrichment features and favorable ore-forming areas. The study has shown that the Huanglong Jurassic coalfield was formed in terrigenous supply abundant arid weak reducing peat bog environment. Contents of trace elements Ga, Ge, V and As in coal are at normal level, Cl, F, P belong to low level, while the U content obviously higher than national level. Because of basin margin oro-genic movement provided abundant U sources, organic fluid and passage system made U content gradually decreasing from basin mar-gin toward basin center, thus, the Yonglong and Xunyao mining areas in redox environment were favorable to form U deposits.