This paper reports on the investigation of the distributions of sediments and heavy metals in Sooyoung River and its mouth, carried out during the period from July 1990 and August 1991. Since the samples were saline, water analysis was performed by the method of alkaline KMnO₄ and sediment analysis by acidic KMnO₄. Mercury was digested with both nitric and sulfuric acids, and then determined by dithizone CCl4 method. Cadmium, Zinc, Copper, Lead and Chronium were determined by atomic absorption spectroscopy after aliquots of samples were digested with nitric acid and hydrogen peroxide. Mineral components of sediments were identified by XRD and microscopic analysis. The result are as follows : 1. The ranges of COD of water and sediments were 10.6-54.6ppm and 63-26000ppm respectively. 2. The ranges of concentrations of Cadmium, Lead, Copper and Zinc for water were 0.002 -0.024ppm, 0. 013-0.060ppm, 0.013-0.736ppm, 0.003-0.012ppm, respectively. 3. The ranges of concentration of Mercury, Cadmium, Lead, Copper, Zinc and Chromium for sediments were N.D - 0.09ppm, 0 .1-2.07ppm, 0.32-5 2.35 ppm, 1.04 - 20.67 ppm, 7.1-52.50 ppm and 0.23-5.22 ppm, respectively. 4. The mineral components of the sediments were mainly quartz and feldspar.

This study is directed to study of the stratigraphy, sedimentary rocks and depostitional environment of the Jinju Formation in the Jinju-Sacheon area. The Jinju Formation in the area is subdivided into the lower member, middle member and upper member by their lithologic characteristics. Each member of the Jinju Formation is composed mianly of grey arkose sandstone, sandy shale and dark grey shale. A few thin layers of limestone and calcareous shale are intercalated in the upper parts. As in most places, sand shale of the formation shows onionJstructures and contains many nodules. The grain particle analysis of the sandstone samples were obtained moderately sorted, positive skewness and meso-kurtic. The significant sedimentary structures such as the pillow, cone-in-cone, large scale suncrack, ridge-type cross-bedding, cylindrical muddy lime concretion and stromatolites are sampled from the non-marine Cretaceous Jinju Formation in the Kyeongsang basin, Korea. The fades fossils of the Cretaceous snakeflies, freshwater fishes, cyzicuses, cladophlebis spp., and plant stems were excavated from the black shale of the formation. The paleocurrent study, was carried out by means of the statistical analysis of the cross-stratification, ripple mark, slump structure, and parting lineation, which are palecocurrent structure. The investigator presents his own computer programming process for the calculation of statistical parameters. The paleocurrent direction, depositional strike, source area, and the depositional center of the basin of the Jinju Formation are judged to be southeast, northeast, northwest, and southeast, respectively. The depositional environment on the formation in the studied area is determined definitely the fluvial environment in view of the interdisciplinary assessment of the analysis results of paleocurrent structures listed above.

Human activities have gradually damaged the land-water ecosystem, and natural processes, in turn, produce grievous losses to human society. Numerous environmental laws have been enacted to safeguard people and their investments from pollution and other forms of air, water, and land degradation. There have also been massive environmental changes in the twentieth century. These have been produced by a combination of urbanization, population growth, production of new machines rapidly increasing fuel consumption. An important objective of environmental research work and study should be directed to determine which types of plant construction and resource extraction methods minimize damages to the land-water ecosystem. This objective must be linked to attempts to understand and find solutions to the environmental problems that exist, whether rfatural or the result of human activities.