摘要
In this paper, the characteristics of geometry and margins, internal sedimentary structures and microtextures of architecture elements are summerized. Irregular geometries, sharp margins,internal sedimentary structures associated with liquefaction, such as structureless sandstone, dishes, pipes and special mudstone clasts and rhythms, banding, mineral grains and mudstone clasts with sandstone filled micro-fractures are all helpful to identify the elements of sand injectite complex and provide the theory basis for exploration in intrusive traps in future.