Distribution of Top-layer Soil Minerals in the Coastal Area of Fujian Province and Their Geological and Environmental Significance

The component, content, composition and distribution of the minerals in top-layer soils in the coastal area of Fujian Province were analyzed and studied. The results indicate that heavy minerals in the soils formed under different geological background have complexity, consistency and diversity. The mineral assemblages from different soil types can well reflect the inherent relationship of the origin between soils and their mother rocks. Influenced by external forces, the mineral assemblages in the soils formed under different sedimentary environment have certain mineral combination diversity. The regional high-anomaly for some elements such as mercury and arsenic can be related to the existence of cinnabar and realgar minerals in the soils from the plain districts.