With high magnification of microscopy,a lot of petroleum inclusions were found,which occur in the fissures of sand grains and authigenic minerals in the source rock.

• 用高倍荧光显微镜观察,在这些暗色泥岩的砂质碎屑矿物和自生矿物中,发现丰富的微石油包裹体群。