The Origin of Pb-Zn Deposits in the Northern Kuandian Area, Liaoning Province

作     者：Qu Yajun and Wang Changfeng (Liaoning Institute of Ceological Survey, Shenyang, 110032. P. R. China) 

作者机构：Liaoning Institute of Geological Survey Shenyang 110032 P.R. China 

出 版 物：《Global Geology》 (世界地质（英文版）)

年 卷 期：2001年第6卷第1期

页      面：45-51页

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：Liaoning province, northern Kuandian, Paleoproterozoic, carbonate rock, lead- zinc ore deposit 

摘      要：Carbonates and clastic rocks are well developed in the second-order basins of an Paleoproterozoic aulacogen in the northern Kuandian area, Liaoning Province. The carbonates cousist of two parts, the upper and the lower carbonate forma- tions. The clastic rocks occured between the two formations. Two Pb-Zn ore belts exist in both of upper and lower carbo- nate formations and are called B and A-belt respectively. Several tens of Pb-Zn ore bodies are found in A-belt. Some Pb -Zn ore bodies are apparent in vertical zoning in a sequence of Fe-Zn-Pb-Ba from the lower to the upper. Geological and geochemical researches show that the ore components in the A-belt was exhalated from the liquid source bed deeply and was precipitated in a closed second-order basins. While those in the B-belt was derived from the upper crust and was de- opsited in a normal oceanic enviornment. The second-order basins in Liaodong-Ji’nan-North Korean Peninsular aulaco- gen at the margin of the Archean craton are promising sites for looking for the deposits formed by exhalation of the liquid source bed deeply under crust.