Chinese Journal of GEOCHEMISTRY

(ISSN 1000-9426)

(Vol. 30, No. 4　　　　　  December 2011)

CONTENTS

Geochemistry of source rocks in the Es3 and Es4 members in the Shahejie Formation of the Western Depression, Liaohe Oilfield, China …………WANG Weiliet al. (405)

Distribution of heavy metals in soils of Port Harcourt and its environs, Niger Delta, Nigeria ……………………………………………………………Minapuye I Odigi et al. (415)

Oxygen isotope and REE geochemistry of metamorphic veins within the Zhoutan Group, central Jiangxi Province  …………………………………… HU Gongren et al. (422)

Mineralogical, REE-geochemical and fluid inclusion studies on some uranium occurrences, Gabal Gattar, Northeastern Desert, Egypt ………………… El-Feky M.G. (430)

Seasonal variations in sulfur isotopic composition of dissolved SO42- in the Aha Lake, Guiyang and their implications………………………………SONG Liuting et al. (444)

Mineralogy, geochemistry and age dating of shear zone-hosted Nb-Ta-, Zr-Hf-, Th-, U-bearing granitic　rocks in the Ghadir and El-Sella areas, South Eastern Desert, Egypt………………………………………………………………………………………………………………………………………………………………… Ali M.A. and Lentz D.R. (453)

Environmental changesduring the past 13500 cal. a BP deduced from lacustrine sediment records of Lake Qinghai, China………………………… WANG Yong et al. (479)

A study on the mixing proportion in groundwater samples by using Piper diagram and Phreeqc model…………………………………………………Karmegam U.et al. (490)

Identical carbon isotope trends of carbonate and organic carbon and their environmental significance　from the Changhsingian (end-Permian), Meishan, South China …………………………………………………………………………………………………………………………………………………………………… LI Yucheng et al. (496)

Tectonomagmatic origin of some volcanic and sub-volcanic rocks from the Lower Benue rift, Nigeria ………………………… Smart C. Obiora and Nirmal S. Charan (507)

Joint toxic effects of heavy metals and atrazine on invasive plant species Solidago Canadensis L ………………………………………………… HAN Zhaoxiang et al. (523)

Geological characteristics and metallogenic prospect of marine volcanic rock-type copper deposits　 in eastern Kunlun Mountains area, Xinjiang……………………………………………………………………………………………………………………………………………………………… HAN Hongweiet al. (531)

Geological characteristics of the Sizhuang gold deposit in the region of Jiaodong, Shandong Province —A study on tectono-geochemical ore prospecting of ore deposits…………………………………………………………………………………………………………………………………………………………… QIAN Jianping et al. (539)

Application of Pb isotopic tracing technique to constraining the source of Pb in the West Lake Longjing tea……………………………………… LU Yuanfa et al. (554)

Correlation of karst agricultural geo-environment with non-karst agricultural geo-environment　with respect to nutritive elements in Guizhou………………………………………………………………………………………………………………………………………………………CHEN Rongand BI Kun (563)

Capturing and storage of CO2 by micron-nano minerals: Evidencefrom the nature……………………………………………………………………MAO Xumeiet al. (569)