摘要：北部湾涠西探区浅层地质研究程度不高，不利于今后进一步勘探和工程活

Abstract: The degree of shallow geological research in the Weixi exploration area of ​​the Beibu Gulf is not high, which is not conducive to further exploration and engineering activities in the future. In this paper, based on the completed wellsite survey data, combined with the regional results of predecessors, the shallow strata in the area are divided into engineering geology and sequence, and the shallow geological structure is initially established. In the depth range of 40m below the seabed, the lithology of the strata are silty clay layer, hard clay layer, gravel sandy layer, clay layer and sandy layer from top to bottom. The formation ages are Holocene sea and late Pleistocene. , Middle and early stage. <br>Keywords: shallow geology; engineering geology; sequence division

Abstract: The shallow geological research degree of the Beibu Bay's Western Exploration Area is not high, which is not conducive to further exploration and engineering activities in the future. Based on the survey data of the completed well site, combined with the results of the previous region, the paper divides the shallow formations of the area by engineering geology and sequence, and initially establishes the shallow geological structure. In the depth range of 40m below the seafloor, the rockiness of the formation is silt clay layer, hard clay layer, gravelly sand layer, clay layer and sand layer from top to bottom, and the formation time is the Completely World Sea and the late, middle and early Ocstotic.<br>Keywords: shallow geology;

摘要：北部湾涠西探区浅层地质研究程度不高，不利于今后进一步勘探和工程活动的开展。此文依据已完成井场调查资料，结合前人区域成果，对该区浅部地层进行工程地质和层序划分，初步建立了浅层地质结构。在海底以下40m深度范围内，地层岩性从上至下分别为淤泥质粘土层、硬粘土层、含砾砂质层、粘土层和砂质层，形成时代分别为全新世海和更新世晚、中、早期。关键词：浅层地质；工程地质；层序划分<br>