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(Article of periodic en Anglais - 2008)

Document title

Chemical weathering intensity and element migration features of the Xiashu loess profile in Zhenjiang, Jiangsu Province

Authors(s) and Affiliation(s)

CHEN Y. (1) ; LI X. (1 2) ; HAN Z. (1) ; YANG S. (3) ; WANG Y. (1) ; YANG D. (1) ;
(1) School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, CHINE
(2) State Key Laboratory of Loess and Quaternary Geology, Inst. of Earth Environment, Xi'an, CHINE
(3) State Key Laboratory of Marine Geology, Tongji University, Shangai, CHINE

Abstract

Dagang profile, located in the lower reaches of the Yangtze River, is a typical Xiashu loess profile. This paper takes it as an example to study the chemical weathering degree after aeolian dust deposition and the element migration during the pedogenesis by using elemental geochemical methods. The Xiashu loess profile underwent moderate chemical weathering. It seems that the precipitation is a more important factor than the temperature in controlling the process of the chemical weathering. The major elements (Ca, Na) were migrated and leached, while the elements Fe and Ti were slightly enriched. Except the elements Sr and Ga, other trace elements were enriched. The difference of element migration down the Xiashu loess profile reveals the paleoclimate of the Pleistocene. It generally became drier and cooler in this region from the beginning of the middle Pleistocene

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2008, vol. 18, no3 [pp. 341-352]

Bibliographic references : 15 ref.

Collation : 5 fig., 2 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-008-0341-9

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2008
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