用遥感技术研究油气藏与砂岩铀矿成矿的关系

研究区域位于吐哈盆地中西部、了墩隆起西缘。利用遥感技术,提取了吐哈盆地六景ETM遥感影像的氧化指数图像,并将研究区内一些已勘探确定的油气藏的赋存部位与图像所反映出的大片还原性区域之间建立成因联系,进而证明:在合适的地质构造条件下,受下伏油气藏的影响,可加强或促使其上覆地层在一定范围内形成能使砂岩铀矿沉淀成矿所需的非常重要、必不可少的还原环境,以此说明:油气藏可视为是寻找砂岩型铀矿床的良好中介。

Study of oil and gas pools and metallogenic relation of sandstone-type uranium deposits by remote sensing technique

The research area is located at the midwest of Turpan-Ham Basin and the west edge of Liaodun lump.The oxidation index image of six ETM remote sensing images of Turpan-Ham Basin is extracted out by remote sensing technique.The relations between the positions of oil and gas pools and the area having reductive characteristics reflected by oxidation index image are set up.It has been proved that oil and gas pools can form reductive metallogenic environment necessary for sandstone-type uranium deposits under appropriate geologic conditions.Oil and gas pools can be regarded as a good agency to search sandstone-type uranium deposits.