本文主要用重力、磁法及遥感等手段并结合其他地质成果,对洞庭拗陷及其次一级构造等进行划分。根据上述各种资料的综合研究,判定了洞庭拗陷的边界;对拗陷内次一级构造划分为三凸四凹;对区内部分断层进行了确认;对火成岩进行了圈定。实践证明,这种方法有一定可信性,尤其对新区,掩盖区是有事半功倍的效果。 In this paper, we mainly divide the Dongting depression and its secondary structure by means of gravity, magnetic method and remote sensing, combined with other geological achievements. According to the comprehensive study of the above data, the boundary of Dongting depression is determined; the sub-primary structure of the depression is divided into three convex and four concave; some faults in the area are identified; and the igneous rocks are delineated. Practice has proved that this method has some credibility, especially for the new district, covered area is a multiplier effect.