A study of iron and manganese in the western Mid-Pacific

Our study on the horizontal and vertical distribution, change pattern, and migration form origin of iron and manganese and the factors affecting them in surface sediment in the western Mid-Pacific and in columnar sediment of station L 2032 is introduced. The author inferred the lysocline and compensation depth of the ocean by using the content changes of Fe and Mn; differentiated rapidly sedimentation types by using the difference of Fe and Mn contents, estimated tentatively their contents in different sediments by using the dyeability of Fe and Mn. The author notes that the economically valuable Fe−Mn nodules can be formed during Fe−Mn deposition in the ocean and that in studies on Fe and Mn deposition, the affecting factors should be analyzed comprehensively.