Chinese Journal of GEOCHEMISTRY

(ISSN 1000-9426)

CONTENTS

                                           (2008)

No. 4

Quantification constraints on time gap for comagmatic gold deposits: Evidence from chronological statistics … TAN Jun et al. (325)

Influence of high-fluorine environmental background on crops and human health in hot

spring-type fluorosis-diseased areas………………………………………………………………………… LAN De et al. (335)

Characteristics of rare-earth elements (REE), strontium and neodymium isotopes in hydrothermal fluorites from the

Bailashui tin deposit in the Furong ore field, southern Hunan Province, China……………………… YUAN Shunda et al. (342)

⁴⁰Ar-³⁹Ar dating of lamprophyre dykes in the Baimazhai nickel deposit, Yunnan Province,

China, and its geological significance………………….…….…….…….…….…….…….…….…….…….… LI Bo et al. (351)

Geology and geochemical evaluation of Taftan Volcano, Sistan and Baluchestan Province,

southeast of Iran ………………………………………………………………………… Biabangard H. and Moradian A. (356)

Experimental research on the influence of two cultivation practices on rainfall runoff- and (sandy and muddy)

sediment-generating processes in purple soil environment……………………………………………………XU Pei et al. (370)

Compositional heterogeneity of crude oil and its origin in the Linnan subsag, Linyi County,

Shandong Province………………………………………..…………………………………… CHANG Xiangchun et al. (377)

Petrology and geochemistry of sandstones in the southern Benue Trough of Nigeria: Implications for

provenance and tectonic setting……………………………………………………Minapuye I. Odigi and Levi C. Amajor (384)

Formation and kinetics of porous cordierite from fly ash ………………………………………………… ZHANG Xuebin et al. (395)

Distribution and sequential extraction of some heavy metals in urban soils of Guiyang City, China ……… WU Yongfeng et al. (401)

Compositional and geochemical characteristics of light hydrocarbons for typical marine oils and typical

coal-generated oils in China………………………………………………………………WANG Xiang and ZHANG Min (407)

Simulation experiment on hydrocarbon generating potential of various source rocks on the northern margin

of the Qaidam Basin, Qinghai, China ………………………………………………………………………… LI Xin et al. (412)

The geochemical characteristics and origin of crude oils in the Kekeya Oilfield, Xinjiang, China ………… TANG Youjun et al. (420)

Farmland mercury contamination in the vicinity of an organic chemical factory in Guizhou, China……..ZHANG Junfang et al. (424)