Quaternary soil horizon is desirable as bearing course for municipal engineering construction in Urban Area of Zhanjiang city, Guangdong province. Quaternary sediments mainly are composed of marine and paralic facies. The interbeded marine sediments that are mainly composed of silts, silty clay, clay, siltstoneclay, are mainly distributed in the onshore areas. The offshore sediments principally are mainly the marine-land interbeds and composed of clay and medium-coarse sands. The Quaternary soil horizon generally contains the silt-fine-sand viscous layer, and the mid-coarse-sand layer is the good bearing course for common engineering foundation for the high buildings.weight: bold" lang=EN-US>