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《Journal of Jilin University(Earth Science Edition)》 2006-04
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Composition of Oxygen Isotopes and Discussion on the Formation of Changkeng Au-Ag Deposit,Guangdong Province

ZHUANG Wen-ming,CHEN Guo-neng,LIN Xiao-ming,PENG Zhuo-lun,MA Hao-mingDepartment of Earth Sciences,Sun Yat-sen University,Guangzhou 510275,China  
Oxygen isotope analyses of the samples collected systemically from six bores of the 16th prospecting line of Changkeng gold-silver deposit indicate that the δ~(18)O values of rock increase from the deeper silver ore body to the shallower gold ore body and from the center of ore body to the wall rock,which consistent with the decreasing of alteration intensity of the wall rocks.Combining with the zoning characteristics of the ore-forming elements clarified by the in-situ melting hypothesis of granite formation in recent years,it is suggested that the Changkeng deposit should be a hydrothermal deposit,the hydrothermal fluids likely came from the concealed granite in the southern part of the region,and it is possible to find out lead,zinc and copper deposits below the silver ore body.
【Fund】: 高等学校博士点专项科研基金项目(2001024411706 20030558005)
【CateGory Index】: P618.5
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