After proposing the concept of “cohesive soil containing calcareous nodules”

the distribution law

genesis

age and types of calcareous nodules of cohesive soil containing calcareous nodules in Huaibei Plain of Anhui Province are studied in detail. Based on field geology studies

tests

exploration and extensive reference to engineering geological exploration reports and professional literature data

the burial and distribution law of cohesive soil containing calcareous nodules are analyzed; and the plane distribution map and typical strata section maps of cohesive soil containing calcareous nodules are drawn. Cohesive soil containing calcareous nodules mainly distributes in the block between rivers

depression and the Yellow River Flood Plain in Huaibei Plain. The change law of the elevation of the roof of cohesive soil containing calcareous nodules and the ground elevation is basically identical. Calcareous concretions can generally be divided into three forms: embryonic calcareous concretions

mature calcareous concretions and calcareous hard pan. It is pointed out that there are embryonic calcareous

mature calcareous and calcareous hard pan from up to down on profile

the particle size and number of calcareous concretions increase gradually with depth and calcareous hard pan comes to being around the perennial groundwater level. In addition

the radiocarbon ages of embryonic calcareous

mature calcareous and calcareous hard pan gradually increase on profil