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No.24 (1977/09) >

 
Title :Reddish Soils formed in Limestone Area of the Ryukyu Islands Part 1 Minor Element Contents
Authors :Taira, Hatsuo
Kitano, Yasushi
Kaneshima, Kiyoshi
Authors alternative :平良, 初男
北野, 康
兼島, 清
Issue Date :Sep-1977
Abstract :The minor elements such as Mn, Co, Ni, Zn, Cu, Cd and Pb with some major chemical components such as Fe_2O_3, Al_2O_3, CaO, MgO and Si0_2 have been determined in reddish soils collected from the limestone area of the Ryukyu Islands. The manganese is concentrated in reddish soils which in-hold the manganese nodules and display the exponential increase toward the surface of the reddish soil. The manganese dioxide as well as the clay minerals and iron oxides in reddish soils show the important role for the concentration of minor elements. The manganese dioxide can be precipitated out in each strata in the reddish soils heterogeneously depending upon the conditions of oxidation-reduction states and the supply of the manganese.
Type Local :紀要論文
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/24395
Citation :琉球大学理工学部紀要. 理学編 = Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences no.24 p.41 -50
Appears in Collections:No.24 (1977/09)

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