The formation of representative lateritic weathering covers in south-central Guangxi (southern China)

Auteur(s) et Affiliation(s)

XIAO, W.

State Key Lab. of Environmental Geochemistry, Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, Chine

Univ. of the Chinese Academy of Sciences, Beijing, Chine

HONGBING, J.

State Key Lab. of Environmental Geochemistry, Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, Chine

Civil and Environmental Engineering School, Univ. of Science and Technology, Beijing, Chine

SHIJIE, W.

State Key Lab. of Environmental Geochemistry, Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, Chine

HUASHUO, C.

State Key Lab. of Environmental Geochemistry, Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, Chine

Univ. of the Chinese Academy of Sciences, Beijing, Chine

CHANGSHUN, S.

State Key Lab. of Environmental Geochemistry, Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, Chine

Univ. of the Chinese Academy of Sciences, Beijing, Chine

Description :
The mineralogy and geochemistry have been studied in three representative lateritic weathering covers close to the Tropic of Cancer (Guangxi, South China) with the purpose of studying formation and evolution processes of lateritic covers in this region. The X-ray diffraction and scanning electron microscope analysis results indicate that the contents, particle sizes, shapes and structures of secondary minerals, such as iron and clay minerals, are distinctly different in ferruginous nodular horizon and mottled clay layer of lateritic profiles. Finally, a model for the formation and evolution of typical lateritic weathering covers in south-central Guangxi, supported by all the data, was proposed.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, n°. 118, p. 55-72, nombre de pages : 18, Références bibliographiques : 1 p.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais