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陕甘宁盆地跨越陕、甘、宁、蒙四省(区),面积二十六万平方公里。近年来,随着石油勘探事业的飞跃发展,曾进行了大量系统的地质调查和地球物理工作,特别是近三年来,除综合整理了原地质部航测队等前人有关资料外,并利用地震反射法六次复盖获得了较为可靠的新的结晶基底资料,配合重力及地面地质成果,在综合研究的基础上,对它们作了新的解释,使我们对震旦亚界的构造特征及其发展历史有了进一步的认识。
The Shan-Gan-Ning Basin spans over Shaanxi, Gansu, Ningxia and Mongolia provinces (districts) with an area of 260,000 square kilometers. In recent years, with the rapid development of oil exploration, a large number of systematic geological surveys and geophysical work have been carried out. In particular, in the past three years, in addition to consolidating previous data such as the former Geological Department’s aerial survey team and using earthquakes Reflecting six times to obtain a more reliable new crystalline basement data, with the gravity and surface geological results, based on the comprehensive study of them a new explanation, so that we have the characteristics of the ancillary subsurface structure and Its history has been further developed.