Chinese Journal of GEOCHEMISTRY

(ISSN 1000-9426)

(Vol. 28, No. 1, March 2009)

CONTENTS

Lead isotopic systematics for native copper-chalcocite mineralization in basaltic lavas of the Emeishan large igneous province, SW China: Implications for the source of copper ………………… ZHANG Qian et al. (1)

Trace and rare-earth element geochemistry: A tool for petrogenetic and geotectonic modeling

of ensimatic ortho-amphibolites from Pan-African belt of Obudu Plateau,

Southeastern Nigeria …………………………………Ukaegbu V.U. and Beka F.T. (19)

Formation of the adakite-like granitoid complex and porphyry copper-gold deposit in Shaxi from southern Tancheng-Lujiang fault belt: A clue to the west Pacific plate subduction …………Lan Xianghua et al. (28)

Geochemical characterization of Cretaceous sandstones from the Southern Benue Trough, Nigeria

…………………………………………………………………………….… Odigi M.I. and Amajor L.C. (44)

The distribution characteristics of nitrogen and phosphorus in the ecological system of Mt. Beigu wetland

…………………………………………………………………………………………WU Yanyou et al. (55)

Characterization of arsenate adsorption on amorphous Al gels with Keggin structure by Fourier transformed infrared spectroscopy and MAS ²⁷Al NMR ……………………………… LIU Jing and ZHAO Fenghua (61)

Rb-Sr isotopic dating of sphalerite from the giant Huize Zn-Pb ore field, Yunnan Province,

 Southwestern China………………………..…………………………………………… YIN Mudan et al. (70)

Effects of copper pollution on the activity of soil invertase and urease in loquat orchards …… FU Lijun et al. (76)

Magnetic susceptibility of the Xifeng section and its paleoclimate significance  ………… SUN Yubing et al. (81)

Carbonate cementation-dissolution in deep-seated  sandstones near the overpressure top in central

 Junggar Basin, Xinjiang, NW China …………………………………………………… YANG Zhi et al. (86)

A statistical approach for determining the environment impact of surface sediments from the Dongting

Lake area, central China………………………………………………………………YAO Zhigang et al. (97)

Environmentally geochemical characteristics of vanadium in the topsoil in the Panzhihua mining area,

 Sichuan Province, China ……………………………………………………………TENG Yanguo et al. (105)

Relationship between the variation of water quality in rivers and the characteristics of watershed

国内统一刊号：CN52-1043/P

国内邮发代号：2-577

E-mail: cjgc@vip.skleg.cn    hzl@mails.gyig.ac.cn