CAJ | 학술논문

作为上扬子前陆盆地中一套分布较局限的碎屑岩系，湄潭组在油气地质和矿产地质中均具有重要的意义。因此，其沉积环境、岩相古地理等日益受到国内学者的重视。通过对武隆黄岩湄潭组上段砂岩的平均粒径、分选性、偏度、峰度等进行了粒度分析。根据萨胡粒度判别函数、C-M 图解、离散图解及粒度概率累计曲线并结合野外露头资料，判别其沉积环境为三角洲前缘远砂坝及水下分流河道沉积，通过对古流向的统计并结合区域地质资料推测其物源可能来自黔中古陆。
작위상양자전륙분지중일투분포교국한적쇄설암계，미담조재유기지질화광산지질중균구유중요적의의。인차，기침적배경、암상고지리등일익수도국내학자적중시。통과대무륭황암미담조상단사암적평균립경、분선성、편도、봉도등진행료립도분석。근거살호립도판별함수、C-M 도해、리산도해급립도개솔루계곡선병결합야외로두자료，판별기침적배경위삼각주전연원사패급수하분류하도침적，통과대고류향적통계병결합구역지질자료추측기물원가능래자검중고륙。
The Meitan Formation as clastic rocks distributed locally in the Yangtze foreland basin is of great importance to petroleum and solid mineral resources. This study performs the grain-size statistical analysis of the upper sandstone of the Meitan Formation in the Huangyan section, Wulong which in combination with field observation indicates such sedimentary environments as delta front, subaqueous distributary channel, mouth bar and distal bar. According to paleocurrent statistics and other parameters, material of the Meitan Formation were derived from the Central Guizhou oldland.