A MECHANISM OF CHEMICAL-WEATHERING OF MUDSTONE IN A MOUNTAINOUS AREA

被引：49

作者：

CHIGIRA, M

机构：

[1] Central Research Institute of Electric Power Industry, Abiko City, Chiba, 270-11

来源：

ENGINEERING GEOLOGY | 1990年 / 29卷 / 02期

关键词：

D O I：

10.1016/0013-7952(90)90002-I

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The chemical weathering of marine mudstone in humid mountainous areas of Japan is dominated by the oxidation of pyrite, a common mineral in marine sedimentary rocks. This process occurs at the oxidation front, that is the base of the oxidized zone, and sulfuric acid is formed. Chlorite is transformed into smectite due to the oxidizing and acidic conditions. As sulfuric acid migrates downward from the oxidation front, minerals are dissolved and components are leached out from the underlying dissolved zone, whose lower boundary is the dissolution front. The oxidation and dissolution fronts migrate downward as weathering progresses in mountainous areas. © 1990.

引用

页码：119 / 138

页数：20

共 30 条

[1] Ariizumi, The water chemistry of landslide areas, Report of Public Works Research Institute, 123, pp. 117-130, (1964)
[2] Berner, Berner, The Global Water Cycle, Geochemistry and Environment, (1987)
[3] Chigira, Chemical weathering of mudstone of the Pleistocene Haizume Formation, Niigata Prefecture, central Japan, J. Geol. Soc. Jpn., 94, pp. 419-431, (1988)
[4] Dixon, Hossner, Senkayi, Egashira, Mineralogical properties of lignite overburden as they relate to mine spoil reclamation, Acid Sulfate Weathering, 10, pp. 169-191, (1982)
[5] Dougherty, Barsotti, Structural damage and potentially expansive sulfide minerals, Bull. Assoc. Eng. Geol., 9, pp. 105-125, (1972)
[6] Franklin, Chandra, The slake-durability test, Int. J. Rock Mech. Min. Sci., 9, pp. 325-341, (1972)
[7] Hawkins, Lawrence, Privett, Implications of weathering on the engineering properties of the Fuller's Earth formation, Geotechnique, 38, pp. 517-532, (1988)
[8] Honda, Did the framboidal pyrite in black mudstone cause the corrosion of water pipe of iron, Rept. Dept. Miner. Resour., Akita Univ., 46, pp. 1-5, (1981)
[9] Acid Sulfate Weathering, Soil Sci. Soc. Am. Spec. Publ., 10, (1982)
[10] Kobayashi, Tateishi, Yasui, Kazaoka, Kurokawa, Aburai, Watanabe, Stratigraphy and paleoenvironment of Nishiyama and Haizume Formations and Uonuma Group in Niigate sedimentary basin, J. Geol. Soc. Jpn., 92, pp. 375-390, (1986)

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